JP2020190134A - Flood prevention sealing structure and construction method for the same - Google Patents

Abstract

[Problem] To provide a waterstop panel extending in a direction along the shore of a target water area, in a form that maintains waterstopping between the hardened concrete surface and with a simple structure. [Solution] The waterstop panel includes a support 12 erected on ground with at least a portion of its surface being concrete, a waterstop panel 14 arranged along the shore of the water area and attached to the support 12, and a lower end attachment member 16 having a predetermined length in the direction along the shore of the water area and provided for fixing the lower end of the waterstop panel 14 to the ground, the lower end attachment member 16 having first and second attachment surfaces 16A1 and 16B1 in a positional relationship that is approximately perpendicular to each other, the first attachment surface 16A1 is arranged parallel to the concrete surface of the ground and fixed with an anchor bolt 22, and the waterstop panel 14 is arranged so that the waterstop surface 14X of the waterstop panel 14 is parallel to the second attachment surface 16B1, and the lower end of the waterstop panel 14 is fixed to the second attachment surface 16B1. [Selected Figure] Figure 1

Description

The present invention relates to a flood prevention water stop structure provided along the shore of a water area and a method for constructing the same, and more particularly to a flood prevention water stop structure to be installed on a hardened concrete surface and a method for constructing the same. Specific installation locations include, for example, roads along water bodies, revetment structures, embankments or locations in the vicinity thereof, and are particularly preferably applicable to river-side road width ends of riverside roads. Is. Further, in the present application, the water area is an area filled with water, and is, for example, a river, a lake, a marine, or the like.

In recent years, many sudden torrential rains have been occurring in Japan, and there have been many reports that floods have occurred and flooded. The current common method for floods is to urgently stack sandbags and basins to prevent floods. This method has the advantage that it can be completed quickly if the required number of sandbags and water sac are prepared in advance and the personnel required to stack them are available. However, in recent years, due to a shortage of personnel, it may take time to stack the required number of sandbags and water sac. In addition, even if the required number of sandbags and water sac are piled up, the sandbags and water sac do not follow the ground's unevenness well, so the adhesion to the ground surface is insufficient and there is a problem with water stopping. is there.

On the other hand, as a method other than stacking sandbags and water bags, for example, a reinforced concrete battlement (parapet) can be installed. The method of installing the chest wall has the advantage of improving the watertightness on the ground surface compared to the method of stacking sandbags and water sac, but there is a problem that the width of the road decreases due to the thickness of the wall. In addition, there is a problem that the installation work becomes large-scale.

Further, there is a technique described in Patent Documents 1 and 2 as a technique for separately providing a water blocking structure on hardened concrete such as a road width end on a river side in a road along a river, but in a direction along the shore of a water area. No device has been devised so that the water blocking wall formed over a long distance can be installed in a form that ensures water stopping between the hardened concrete surface and a simple structure.

Japanese Unexamined Patent Publication No. 2016-69769 JP-A-2018-178702

The present invention has been made in view of this point, and is simple in that a waterproof panel extending in a direction along the shore of a target water area is maintained in a water-stopping manner with a hardened concrete surface. It is an object of the present invention to provide a flood prevention waterproof structure and a method for constructing the same structure.

The present invention solves the above problems by the following flood prevention and water blocking structure.

That is, the flood prevention water stop structure according to the present invention is a flood prevention water stop structure provided along the shore of a water area, and has at least a support column erected on the ground whose surface is concrete and the water area. It has a predetermined length in the direction along the shore of the water area and is arranged along the shore of the water stop panel and attached to the support column, and fixes between the lower end of the water stop panel and the ground. The lower end mounting member is provided for this purpose, and the lower end mounting member has first and second mounting surfaces that are substantially orthogonal to each other, and the lower end of the water blocking panel. To fix the water between the water and the ground, the first mounting surface is arranged parallel to the concrete surface of the ground and fixed to the concrete surface with anchor bolts, and the water stop surface of the water stop panel is the first. A flood prevention water stop structure characterized in that the water stop panel is arranged so as to be parallel to the mounting surface of 2 and the lower end portion of the water stop panel is fixed to the second mounting surface. is there.

Here, in the present application, the water blocking surface of the water stopping panel is a surface facing the water area, and is a surface that blocks the water overflowing from the water area at the time of flooding.

Further, when fixing the lower end portion of the water blocking panel to the second mounting surface, it may be mechanically fixed. Here, "mechanically fixing" means fixing by a mechanical action, and specifically, for example, fixing with bolts and nuts.

A plurality of the columns are provided along the shore of the water area, and the predetermined length of the lower end mounting member is the length between the plurality of columns or the water area of the water stop panel. It may correspond to the length between the end in the direction along the shore and the support column closest to the end.

The columns may be configured to be fixed to the concrete on the ground surface with anchor bolts.

A joint material may be provided between the first mounting surface of the lower end mounting member and the concrete surface.

The flood prevention water stop structure may have an upper end plate-like body, if necessary, so that the longitudinal direction of the upper end plate-like body is along the shore of the water area of the water stop panel. It may be arranged so as to be attached to the upper end portion of the water blocking panel by welding so that one surface of the surfaces having the maximum facing areas faces upward.

The flood prevention water stop structure may have an upper end reinforcing member attached to the upper end of the water stop panel, if necessary, and the upper end reinforcing member has a longitudinal direction of the water stop panel. It may be configured to be mechanically fixed to the upper end of the water blocking panel so as to be in a direction along the shore of the water area.

The upper end reinforcing member has two outer surfaces that are substantially orthogonal to each other, one outer surface of the two outer surfaces faces upward, and the other of the two outer surfaces faces upward. The outer surface of the water stop panel may be arranged parallel to the water stop surface of the water stop panel and mechanically fixed to the upper end portion of the water stop panel.

The water stop panel may be configured so that the upper end thereof is bent so as to have a substantially right angle.

The flood prevention water stop structure may be provided with side end plate-like bodies, if necessary, and the side end plate-like bodies are provided at both ends of the water stop panel in a direction along the shore of the water area. Even if it is attached by welding and arranged from the lower end to the upper end of the water stop panel, the surface of the side end plate-like body having the maximum facing area is configured to be orthogonal to the water stop panel. Good.

A plurality of the columns and the water blocking panel are provided along the shore of the water area, and the side end plate-like bodies attached to the water stopping panels adjacent to each other in the direction along the shore of the water area are adjacent to each other. A joint material may be provided at least in a part between the side end plate-shaped bodies in a substantially height direction of the water blocking panel.

One of the adjacent side-end plate-shaped bodies is provided with a long hole in the horizontal direction, and the other of the adjacent side-end plate-shaped bodies is provided with a long hole in the vertical direction. Is provided, and bolts are inserted through the elongated holes long in the horizontal direction and the elongated holes long in the vertical direction, and the adjacent side end plate-like bodies are connected to each other by the bolts. It may be configured as follows.

The strut may be an existing strut to which an existing vehicle guard fence is attached.

The method for constructing the flood prevention waterproof structure according to the present invention includes a support column which is erected on the ground where at least a part of the surface is concrete, and a water stop panel which is arranged along the shore of the water area and attached to the support column. A flood prevention water stop structure having first and second mounting surfaces that are substantially orthogonal to each other and having a lower end mounting member that fixes between the lower end of the water stop panel and the ground. The method of constructing the above, in which the support is erected on the ground along the shore of the water area, and the first attachment surface of the lower end attachment member is parallel to the concrete surface of the ground. The second mounting surface of the lower end mounting member and the water stop panel fixed to the concrete surface of the ground in the ground mounting step of arranging and fixing to the concrete surface with anchor bolts. The water stop panel is arranged so as to be parallel to the water stop surface, and the lower end of the water stop panel is fixed to the second mounting surface. It is a method of constructing a flood prevention water stop structure, which is characterized by having a water stop panel support mounting step for attaching.

The strut erection step may be a step of fixing the strut to the concrete on the ground surface with anchor bolts.

According to the present invention, a water stop panel extending in a direction along the shore of a target water area can be provided in a form that maintains water stoppage with a hardened concrete surface and has a simple structure. A water structure can be provided.

Front view showing flood prevention water stop structure 10 which concerns on 1st Embodiment of this invention Section II-II sectional view of FIG. Section III-III sectional view of FIG. IV-IV line end view of FIG. FIG. 1 is a sectional view taken along line VV. VI-VI line sectional view of FIG. FIG. 1 is a sectional view taken along line VII-VII. VIII-VIII sectional view of FIG. IX-IX line end view of FIG. End view showing a modified example of the connection mode of the lower end mounting member 16 of the flood prevention water stop structure 10 according to the first embodiment with the water stop panel 14 (end view of a portion corresponding to FIG. 9). An end view showing a lower end mounting member 30 which is a first modification of the lower end mounting member 16 of the flood prevention water blocking structure 10 according to the first embodiment (end view of a portion corresponding to FIG. 9). An end view showing a lower end mounting member 32 which is a second modification of the lower end mounting member 16 of the flood prevention water blocking structure 10 according to the first embodiment (end view of a portion corresponding to FIG. 9). Front view showing the flood prevention water stop structure 40 according to the second embodiment of the present invention. FIG. 13 is a sectional view taken along line XIV-XIV. XV-XV line end view of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(1) First Embodiment (1-1) Configuration of the flood prevention water stop structure according to the first embodiment FIG. 1 is a front view showing a flood prevention water stop structure 10 according to the first embodiment of the present invention. FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a sectional view taken along line III-III of FIG. 1, FIG. 4 is an end view of line IV-IV of FIG. 1 is a sectional view taken along line V-V, FIG. 6 is a sectional view taken along line VI-VI of FIG. 1, FIG. 7 is a sectional view taken along line VII-VII of FIG. 1, and FIG. 8 is a sectional view taken along line VIII-VIII of FIG. It is a cross-sectional view, and FIG. 9 is an end view of the IX-IX line of FIG. In FIG. 9, the anchor bolt 22 is shown by a broken line. Further, in FIG. 5, the nut 26B should be originally drawn with a hidden line (broken line), but for convenience of illustration, it is drawn with a solid line. Further, the joint material 24 provided between the adjacent side end plate-shaped bodies 18 and 19 is shown by hatching in FIG. 7.

The flood prevention water stop structure 10 according to the first embodiment of the present invention includes a support column 12, a water stop panel 14, a lower end mounting member 16, side end plate-shaped bodies 18 and 19, and an upper end plate-shaped body. It has 20, an anchor bolt 22, a joint material 24, and a U bolt 26.

The pillar 12 is a pillar member that is erected with its lower portion embedded in the ground whose surface is concrete at least in part and is provided in plurality along the shore of the water area, and is a member that holds the water blocking panel 14. In the flood prevention water stop structure 10 according to the first embodiment, one support column 12 is arranged for one water stop panel 14. The support column 12 has a cylindrical shape, and its cross-sectional shape (cross-sectional shape obtained by cutting at a plane orthogonal to the longitudinal direction) is specifically, for example, having an outer diameter of about 100 to 120 mm and a thickness. It is about 4.5 mm. Specifically, the total length of the support column 12 is, for example, about 1.0 m to 2.4 m, and the lower portion of the support column 12 is embedded in the ground at a depth of about 0.2 m to 1.7 m.

However, the above-mentioned dimensions of the support column 12 only show a specific example of dimensions, and the shape of the support column 12 is not limited to the above-mentioned dimensions, and the above-mentioned specific dimensions are adapted to the actual situation at the construction site. A dimension that deviates from the standard dimensional example may be adopted. For example, the lower part of the support column 12 embedded in the ground may be hardened with concrete or mortar, or the lower end of the support column 12 embedded in the ground may be horizontally attached to a steel plate, and brackets or anchors may be provided. Therefore, it is possible to shorten the length of the support column 12 to be embedded in the ground, and as a result, it is possible to shorten the total length of the support column 12.

Further, the shape of the support column 12 does not have to be cylindrical, and may be, for example, a square cylinder. It is also possible to use an existing strut, for example, an existing strut to which an existing vehicle guard fence is attached can be used as the strut 12.

Further, the support column 12 is not necessarily limited to a mode in which the lower portion is embedded in the ground and erected. For example, the support column 12 is erected by being fixed to the hardened concrete 100 on the ground surface with anchor bolts. Is also possible. In the case of this aspect, specifically, for example, a steel material having an L-shaped cross section is arranged between the side surface of the lower end portion of the column 12 and the hardened concrete 100 on the ground surface, and one portion of the L-shaped steel material is arranged. May be fixed to the hardened concrete 100 with anchor bolts, and the other portion of the L-shaped steel material may be connected to the support column 12 with bolts, nuts, or the like. Further, instead of the L-shaped steel material, a flat plate-shaped mounting member is attached to the bottom surface of the lower end portion of the support column 12 facing the ground surface, and the flat plate-shaped mounting member is fixed to the hardened concrete 100 on the ground surface with anchor bolts. You may.

The water stop panel 14 is, for example, a panel made of a steel plate having a thickness of about 3.2 mm to 6 mm, is a plate-like body, and is arranged in a direction along the shore of the water area. The size of the water stop panel 14 is about 2 to 3 m in width along the shore of the water area and about 0.5 m to 1 m in height, and the water stop panel 14 has a support column 12 at the center in the width direction. It is installed vertically along the shore of the water area, and when water overflows from the water area, the water stop surface 14X of the water stop panel 14 blocks the overflowing water. However, the thickness and size of the water blocking panel 14 may be appropriately changed according to the situation at the site after checking the safety.

Further, the surface of the waterproof panel 14 may be subjected to anticorrosion treatment, and examples of the anticorrosion treatment include hot-dip galvanizing, mortar spraying, and painting. When stainless steel is used for the water blocking panel 14, it is possible not to apply the anticorrosion treatment. Anticorrosion treatment may also be applied to the surfaces of the support column 12, the lower end mounting member 16, the side end plate-shaped bodies 18, 19, the upper end plate-shaped body 20, and the U bolt 26, and the support column 12, the lower end mounting member. The contents of the anticorrosion measures for 16, the side end plate-like bodies 18, 19, the upper end plate-like body 20, and the U bolt 26 are the same as the anticorrosion measures for the water blocking panel 14 described above.

In the first embodiment, the U bolt 26 is used for attaching the water blocking panel 14 to the support column 12, and as shown in FIGS. 1, 5 and 6, the U bolt 26 is arranged so as to hold the support column 12. Both ends of the U bolt 26 are inserted into the water blocking panel 14 and the reinforcing steel plate 14A, and both ends of the U bolt 26 are attached to the water blocking panel 14 and the reinforcing steel plate 14A with nuts 26A and 26B. The reinforcing steel plate 14A is a steel plate welded near the central portion in the width direction of the water blocking panel 14 to reinforce the attachment portion of the U bolt 26.

Further, in the first embodiment, one water stop panel 14 is attached to one support column 12, but a plurality of support columns 12 may be attached to one water stop panel 14 to support it. In this case, the width of the waterproof panel 14 can be increased. For example, the width of the water stop panel 14 may be 4 m and two columns 12 may be attached. In this case, for example, from both side ends of the water stop panel 14 (both ends in the direction along the shore of the water area). The support columns 12 may be attached at positions of about 1 m to support the water stop panel 14. Further, the distance between the columns 12 and the width of the water blocking panel 14 can be changed as appropriate.

Further, the water stop panel 14 does not have to be integrally formed as a whole, and may be, for example, one that is connected via another member to form one water stop panel. Further, for example, it may be connected by welding to form one waterproof panel.

Further, the waterproof panel 14 may be attached to the side surface of the support column 12 on the water area side or the side surface opposite to the water area after checking the safety. When the water stop panel 14 is attached to the side surface of the support column 12 on the water area side, the water pressure received by the water stop panel 14 from the water overflowing from the water area can be transmitted to the support column 12 by supporting pressure. Further, in the first embodiment, as described above, since the U bolt 26 arranged so as to hold the support column 12 is used for attaching the water stop panel 14 to the support column 12, the water stoppage panel 14 is used as a water area. Even when attached to the side surface of the support column 12 on the opposite side, water pressure can be transmitted to the support column 12 via the U bolt 26.

Further, the attachment of the water blocking panel 14 to the support column 12 is not limited to the embodiment using the U bolt 26, and the attachment embodiment may be appropriately changed after checking the safety. It is also possible to attach the water stop panel 14 to the support column 12 by welding.

The lower end attachment member 16 is attached to the lower end of the water stop panel 14 so that the longitudinal direction is along the shore of the water area of the water stop panel 14. The lower end mounting member 16 is an L-shaped body having an L-shaped cross section cut along a plane orthogonal to the longitudinal direction, and may be a steel material. The width of one portion 16A (a portion along the surface of the hardened concrete 100) constituting this L-shaped body is, for example, about 100 mm, and the width of the other portion 16B (a portion along the water blocking panel 14) (vertical direction). The width) is, for example, about 100 mm. The thickness of one portion 16A and the other portion 16B of the lower end mounting member 16 is about 6 mm to 12 mm. Further, as shown in FIGS. 1 and 2, the lower end mounting member 16 is divided into two at the position of the support column 12, and the length of the lower end mounting member 16 is set on the shore of the water area of the water stop panel 14. It is a little less than half the width in the direction along the line, and is a little less than 1 to 2 m. When a plurality of columns 12 are attached to one water blocking panel 14, the lengths of the lower end mounting members 16 arranged between the adjacent columns 12 among the plurality of columns 12 are adjacent to each other. The length should correspond to the length between the columns 12.

Further, as described above, the lower end mounting member 16 is an L-shaped body having an L-shaped cross section cut at a plane orthogonal to the longitudinal direction, and the mounting surface 16A1 of one portion 16A and the other portion 16B are attached. It has a positional relationship that is substantially orthogonal to the surface 16B1. As shown in FIG. 9, the attachment surface 16A1 of one portion 16A is a side surface of the side surface of one portion 16A opposite to the side on which the other portion 16B is located, and the attachment surface of the other portion 16B. 16B1 is a side surface of the other portion 16B that is opposite to the side on which one portion 16A is located.

One portion 16A of the lower end mounting member 16 is a portion to be arranged horizontally, and as shown in FIG. 9, the attachment surface 16A1 of the one portion 16A is arranged parallel to the surface of the hardened concrete 100. It is fixed to the surface of the hardened concrete 100 by anchor bolts 22 and nuts 22A. The type of anchor bolt 22 is not particularly limited, and is a type of anchor bolt that is placed at a predetermined position before concrete is placed, and then concrete is placed in that state and embedded in concrete (hereinafter, normal type anchor bolt). It may be described as), or post-installed anchor bolts may be used. As post-installed anchor bolts, both adhesive anchor bolts and metal anchor bolts can be used.

When attaching one portion 16A of the lower end mounting member 16 to the hardened concrete 100, the anchor bolt 22 attached to the hardened concrete 100 is provided with a through hole provided in one portion 16A of the lower end mounting member 16. The lower end mounting member 16 is inserted and placed on the surface of the hardened concrete 100. Then, by attaching and tightening the nut 22A to the upper end of the anchor bolt 22 in that state, even if the surface of the hardened concrete 100 is uneven, the lower end is attached so as to follow the uneven shape. The member 16 is deformed to some extent. Therefore, in the flood prevention water stop structure 10 according to the first embodiment, even if the surface of the hardened concrete 100 has non-landing, it is deformed to some extent so as to follow the non-landing shape, and the lower end portion is attached. Since the member 16 is attached to the surface of the hardened concrete 100, the gap between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100 is small, and according to the first embodiment. The flood prevention water stop structure 10 has good water stoppage.

Further, a joint material 24 is arranged between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100, and the gap is further filled by the joint material 24, so that the water is further stopped. Is getting better. However, in the flood prevention water stop structure 10 according to the first embodiment, as described above, the lower end mounting member 16 is deformed to some extent and mounted so as to follow the uneven shape of the surface of the hardened concrete 100. Therefore, it is not always necessary to provide the joint material 24, but it may be provided as needed.

As described above, after fixing one portion 16A of the lower end mounting member 16 to the surface of the hardened concrete 100, the mounting surface of the other portion 16B (portion arranged vertically) of the lower end mounting member 16 The lower end of the water stop panel 14 is attached to 16B1 (see FIG. 9). At that time, the through holes provided in the other portion 16B of the lower end mounting member 16 are aligned with the through holes provided in the lower end of the water blocking panel 14, and the bolt 16C is inserted so as to insert the through holes. At the same time as inserting, both ends of the U bolt 26 arranged so as to hold the support column 12 are inserted into a through hole provided near the center of the water stop panel 14 and a through hole provided in the reinforcing steel plate 14A, so that the water stop panel 14 is inserted. Arrange the water stop panel 14 so that the water stop surface 14X is parallel to the mounting surface 16B1, and in that state, tighten the end of the bolt 16C with the nut 16D, and tighten both ends of the U bolt 26 with the nut 26A and the nut 26B. Tighten.

As described above, the lower end mounting member 16 attaches the water blocking panel 14 to the surface of the hardened concrete 100 while reducing the gap with the surface of the hardened concrete 100, and stops the flood prevention water stopping structure 10. The water content can be improved. The lower end mounting member 16 also plays a role of reinforcing the lower end of the water blocking panel 14. Further, when the joint material 24 is arranged between one portion 16A of the lower end attachment member 16 and the surface of the hardened concrete 100, the lower end attachment member 16 also serves to hold the joint material.

The side end plate-shaped bodies 18 and 19 are made of elongated steel plates having a thickness of about 6 mm to 12 mm, a width (width in the direction orthogonal to the water blocking panel 14) of about 100 mm, and a length of about 0.5 m to 1 m. Both ends of the water stop panel 14 (direction along the shore of the water area) so that the planes of the maximum area facing each other are plate-shaped and are arranged so as to be orthogonal to the water stop panel 14 It is attached by welding to both ends of the. In one water stop panel 14, a side end plate-shaped body 18 is provided at one end in a direction along the shore of the water area, and a side end plate-shaped body 19 is provided at the other end.

As shown in FIG. 7, the side end plate-shaped body 18 is provided with an elongated hole 18A that is long in the vertical direction, and the side end plate-shaped body 19 is provided in the horizontal direction as shown in FIG. A long elongated hole 19A is provided. The elongated holes 18A and the elongated holes 19A are provided at corresponding positions, and the positions of the adjacent side end plate-shaped bodies 18 and 19 are finely adjusted by the bolts 28 that insert the elongated holes 18A and 19A. It can be structurally connected.

A joint material 24 is provided between the adjacent side end plate-shaped bodies 18 and 19 of the adjacent flood prevention water blocking structure 10, and a gap between the adjacent side end plate-shaped bodies 18 and 19 is provided. It is blocked.

Therefore, the side end plate-shaped bodies 18 and 19 not only serve to reinforce the water blocking panel 14, but also hold the joint material 24 between the adjacent side end plate-shaped bodies 18 and 19 and the adjacent side ends. It also has a role of closing the gap between the plate-shaped bodies 18 and 19.

Further, it is possible not only to close the space between the adjacent side end plate-shaped bodies 18 and 19 with the joint material 24, but also to structurally connect the adjacent side end plate-shaped bodies 18 and 19 with bolts 28 and nuts 28A. preferable. By structurally connecting the adjacent flood prevention water stop structures 10 to each other, even if driftwood or the like collides with one flood prevention water stop structure 10 at the time of a flood, the external force applied at that time is applied to the adjacent flood prevention water stop structure. Since it is also transmitted to 10, it is possible to prevent the flood prevention water stop structure 10 from colliding with driftwood or the like from collapsing.

The upper end plate-shaped body 20 has a thickness of about 6 mm to 12 mm, a width (width in the direction orthogonal to the water stop panel 14) of about 100 mm, and a length of about 1 m (along the shore of the water area of the water stop panel 14). It is a plate-like body made of elongated steel plate (a little less than half the width in the direction), and is welded at the upper end of the water stop panel 14 so that the longitudinal direction is along the shore of the water area of the water stop panel 14. It is attached with.

One end of the upper end plate-like body 20 (one end of the water stop panel 14 in the direction along the shore of the water area) abuts on the side surface of the upper end of the side end plate-shaped bodies 18 and 19, and has a side end plate shape. It is welded to the side surface of the upper end of the bodies 18 and 19.

The joint material 24 has a role of closing the gap between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100, and a role of closing the gap between the adjacent side end plate-shaped bodies 18 and 19. Has. The joint material 24 also has a role of absorbing thermal expansion and contraction of the water blocking panel 14.

The joint material 24 is at least one between the mounting surface 16A1 of one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100 so as not to leave a gap communicating the side of the water area and the opposite side. The portions are provided in a row without interruption in the horizontal direction along the water blocking panel 14. Further, as shown in FIG. 2, a joint material 24 is also provided on the surface of the hardened concrete 100 in the region between the end portion on the support column 12 side of one portion 16A of the lower end portion mounting member 16 and the support column 12. ..

Further, the joint material 24 is abbreviated as a water stop panel 14 in at least a part between the adjacent side end plate-shaped bodies 18 and 19 so as not to leave a gap communicating between the water area side and the opposite side. Provided in a row without interruption in the height direction (approximately vertical direction). Further, if a gap remains between the side ends of the adjacent water stop panels 14 of the adjacent flood prevention water stop structure 10, a joint material 24 is also provided between the side ends of the adjacent water stop panels 14. You may try to close the gap.

As the joint material 24, it is preferable to use a material having elasticity and excellent shape followability, and since it is used outdoors, it is preferable to use a material that is not easily deteriorated by ultraviolet rays. Specifically, for example, elastite, rubber that is not easily deteriorated by ultraviolet rays, or the like can be adopted.

In the flood prevention water stop structure 10 according to the first embodiment, as described above, even if the surface of the hardened concrete 100 has non-landing, the lower end mounting member 16 follows the non-landing shape. Deforms to some extent. Therefore, the lower end attachment member 16 is attached to the surface of the hardened concrete 100 by being deformed to some extent so as to follow the non-land shape. Therefore, in the flood prevention water stop structure 10 according to the first embodiment, The gap between the surface of the hardened concrete 100 and the surface of the hardened concrete 100 is small, and the water blocking property is good. However, there is a gap between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100. , The joint material 24 is further arranged, and the gap is further filled with the joint material 24, so that the water stopping property is further improved.

Further, since the gap between the adjacent side end plate-shaped bodies 18 and 19 is also closed by the joint material 24 as described above, the flood prevention water stop structure 10 according to the first embodiment has water stop performance. Excellent for.

If the preferable water stopping performance to be realized by the flood prevention water stopping structure 10 according to the first embodiment is specifically shown numerically, the amount of water inundation per 1 m ^{2 of the} water stopping panel 14 per unit time (1 hour) is It is 0.2 m ³ / (h · m ² ) (= 200 L / (h · m ² )) or less, more preferably 0.02 m ³ / (h · m ² ) (= 20 L / (h · m ² )). ) It is as follows.

Further, the width of the region where the joint material 24 is arranged (the width in the direction orthogonal to the water blocking panel 14) is the width (stop) of one portion 16A of the lower end mounting member 16 and the side end plate-shaped bodies 18 and 19. Since the width is about 100 mm (the width in the direction orthogonal to the water panel 14), the width of the area for blocking water is large, and the flood prevention water stop structure 10 according to the first embodiment has further improved water stop performance. There is. However, even if the thickness of the water blocking panel 14 of about 3.2 mm to 6 mm is added to this width of about 100 mm, the width is about the same as the width of the existing vehicle protection fence equipment in the road width direction. It does not narrow the available road width.

Further, the water stop panel 14 of the flood prevention water stop structure 10 according to the first embodiment is not only attached to the support column 12 via the U bolt 26, but also the lower end portion of the water stop panel 14 is attached to the lower end portion. Since the concrete 100 is firmly fixed to the surface of the hardened concrete 100 via the member 16, the flood prevention water stop structure 10 according to the first embodiment can surely secure the water stoppage.

Further, since the flood prevention water stop structure 10 according to the first embodiment is provided on the hardened concrete 100, it is possible to prevent scouring of the ground below the flood prevention water stop structure 10 during a flood. There is.

In principle, the side end plate-shaped bodies 18 and 19 and the upper end plate-shaped body 20 are attached to the water blocking panel 14, but they can be omitted as appropriate after checking the safety. ..

Further, when the joint material 24 is arranged, in principle, it is arranged so as to fill the entire gap between the attachment surface 16A1 of one portion 16A of the lower end attachment member 16 and the surface of the hardened concrete 100. , A part of the joint material 24 arranged between the mounting surface 16A1 of one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100 may be omitted. However, the joint material 24 is placed between the mounting surface 16A1 of one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100 so as not to leave a gap communicating between the water area side and the opposite side. It is preferable to arrange at least a part of the water in a row without interruption in the horizontal direction along the water blocking panel 14.

Further, when the joint material 24 is arranged, in principle, it is arranged so as to fill all the gaps between the adjacent side end plate-shaped bodies 18 and 19, but the adjacent side end plate-shaped bodies 18 A part of the joint material 24 arranged in the gap between 19 may be omitted. However, the joint material 24 is an abbreviation of the water blocking panel 14 in at least a part between the adjacent side end plate-shaped bodies 18 and 19 so as not to leave a gap communicating between the water area side and the opposite side. It is preferable to arrange them in a row without interruption in the height direction (approximately vertical direction).

Further, when the flood prevention water stop structure 10 according to the first embodiment is provided at the side end of the road along the water area, a protective fence for vehicles (not shown) is provided on the road side opposite to the water area. It may be further added to 12 and attached.

As described above, the flood prevention water stop structure 10 according to the first embodiment includes the support column 12, the water stop panel 14, the lower end mounting member 16, the side end plate-shaped bodies 18 and 19, and the upper end. Although it has a simple structure including a plate-shaped body 20, an anchor bolt 22, a joint material 24, and a U bolt 26, the vicinity of the central portion of the water blocking panel 14 is connected to the support column 12 by the U bolt 26. The lower end of the waterproof panel 14 is securely attached, and the lower end of the water blocking panel 14 is firmly attached to the surface of the hardened concrete 100 by the lower end attachment member 16 and the anchor bolt 22, and further, the lower end attachment member 16 Can be deformed to some extent according to the unevenness of the surface of the hardened concrete 100, and a joint material 24 is provided between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100. It has good water stopping property. Further, the width in the horizontal direction orthogonal to the direction along the shore of the water area of the flood prevention water stop structure 10 according to the first embodiment is the width obtained by adding the thickness of the water stop panel 14 to the width in the same direction of the columns 12. It is the length of and is getting smaller.

In the drawings, the nuts 16D, 22A, 26A, 28A, and 42D are drawn as bag nuts, but the nuts 16D, 22A, 26A, 28A, and 42D are not limited to bag nuts.

(1-2) Method for constructing flood prevention water stop structure according to the first embodiment Of the parts of the flood prevention water stop structure 10 according to the first embodiment, the parts to be welded are pre-welded at the factory. Bring it to the site from. Specifically, the reinforcing steel plate 14A, the side end plate-shaped bodies 18 and 19, and the upper end plate-shaped body 20 are welded to a predetermined position of the water stop panel 14 at a factory, and then the water stop panel 14 is used. Bring it to the site in an integrated state.

The support column 12, the lower end mounting member 16, the anchor bolt 22, and the U bolt 26 are brought into the site in a state where they are not connected to other members.

Hereinafter, there are cases where a new support column 12 is installed (when the existing support column is not used as the support column 12 of the flood prevention water stop structure 10 according to the first embodiment) and a case where the existing support column is used as the support column 12. I will explain.

(1-2-1) When newly installing a support column When a support column 12 is newly installed instead of using the existing support column as the support column 12 of the flood prevention water stop structure 10 according to the first embodiment. First, the support column 12 is installed at a predetermined position. In this case, a hole for inserting the support column 12 is dug to a predetermined depth, and the support column 12 of the flood prevention water stop structure 10 is inserted into the hole to a predetermined depth to fix the support column 12 to the ground. In that case, the gap between the inner surface of the hole and the outer surface of the support column 12 is sufficiently filled with soil or concrete to fix the support column 12. Then, after leveling the ground surface to which the flood prevention and water blocking structure 10 is to be installed, anchor bolts 22 (normal type anchor bolts) are arranged at predetermined positions together with predetermined reinforcing bars and the like, and new concrete is placed on the ground surface. It is cast and the anchor bolt 22 is embedded in concrete. Then, the surface of the cast concrete is smoothed, and the concrete is cured until a predetermined strength is developed.

If existing concrete has already been cast on the ground surface on which the flood prevention water stop structure 10 is installed, the concrete may be used. In this case, post-installed anchor bolts are used as the anchor bolts 22, and the post-installed anchor bolts are fixed at predetermined positions in the existing concrete.

Next, one portion 16A (horizontally arranged portion) of the lower end attachment member 16 is attached to a predetermined position on the surface of the hardened concrete 100 by using anchor bolts 22 and nuts 22A.

When attaching one portion 16A of the lower end mounting member 16 to the hardened concrete 100, the anchor bolt 22 attached to the hardened concrete 100 is provided with a through hole provided in one portion 16A of the lower end mounting member 16. The lower end mounting member 16 is inserted and placed on the surface of the hardened concrete 100. Then, in that state, the nut 22A is attached to the upper end of the anchor bolt 22 and tightened. By this tightening, even if the surface of the hardened concrete 100 is uneven, the lower end mounting member 16 is deformed to some extent so as to follow the uneven shape. Therefore, in the flood prevention water stop structure 10 according to the first embodiment, even if the surface of the hardened concrete 100 has non-landing, the lower end portion is attached while being deformed to some extent so as to follow the non-landing shape. The member 16 is attached to the surface of the hardened concrete 100. Therefore, the gap between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100 becomes smaller, and the flood prevention water stop structure 10 according to the first embodiment has good water stoppage. ing.

Further, after arranging the joint material 24 between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100, one portion 16A of the lower end mounting member 16 is attached to the hardened concrete 100. You may. When the joint material 24 is provided between one portion 16A of the lower end mounting member 16 and the surface of the hardened concrete 100, the joint material 24 further fills the gap, so that the water stopping property is further improved.

As described above, after attaching one portion 16A of the lower end mounting member 16 to the surface of the hardened concrete 100, water is stopped at the other portion 16B (portion arranged vertically) of the lower end mounting member 16. Attach the lower end of the panel 14. At that time, the through holes provided in the other portion 16B of the lower end mounting member 16 are aligned with the through holes provided in the lower end of the water blocking panel 14, and the bolt 16C is inserted so as to insert the through holes. The water stop panel 14 is inserted by inserting both ends of the U bolt 26, which is arranged so as to hold the support column 12, through a through hole provided near the center of the water stop panel 14 and a through hole provided in the reinforcing steel plate 14A. The water stop panel 14 is arranged so that the water stop surface 14X is parallel to the mounting surface 16B1, and in that state, the end portion of the bolt 16C is tightened with the nut 16D, and the lower end portion of the water stop panel 14 is attached to the lower end portion. It is connected to the other portion 16B of the member 16, both ends of the U bolt 26 are tightened with nuts 26A and 26B, and the vicinity of the central portion of the water blocking panel 14 is connected to the support column 12.

The lower end of the water blocking panel 14 is temporarily fixed to the mounting surface 16B1 of the other portion 16B (the portion vertically arranged) of the lower end mounting member 16 with a small degree of fixation, and the lower end mounting member is in that state. After attaching one part 16A of 16 to the surface of the hardened concrete 100, the other part 16B that was temporarily fixed is finally fixed to the lower end of the water blocking panel 14, and both ends of the U bolt 26 are nuts. It may be tightened with 26A and a nut 26B so that the vicinity of the central portion of the water blocking panel 14 is connected to the support column 12.

Further, when a plurality of flood prevention water stop structures 10 according to the first embodiment are provided in the direction along the shore of the water area, the joint material 24 is arranged between the adjacent side end plate-shaped bodies 18 and 19. Then, the bolt 28 is inserted into the elongated holes 18A and 19A while finely adjusting the positions of the adjacent side end plate-shaped bodies 18 and 19. Then, the bolt 28 is tightened by the nut 28A so that the adjacent side end plate-shaped bodies 18 and 19 are structurally connected and the gap between the adjacent side end plate-shaped bodies 18 and 19 is eliminated. To do. In this case, regarding the joint material 24 to be attached to the side surface of the side end plate-shaped body 18, only one of the side surfaces of the side end plate-shaped bodies 18 and 19 of the flood prevention water blocking structure 10 according to the first embodiment is used. It is preferable not to attach it to the side surface of the other side end plate-shaped bodies 18 and 19.

(1-2-2) When the existing support column is used as the support column 12 When the existing support column is used as the support column 12 of the flood prevention water stop structure 10 according to the first embodiment, "(1-2-2)" -1) In the case of newly installing the support column 12, among the installation steps described above, the flood prevention water stop structure 10 according to the first embodiment is performed in the same manner except that the step of newly installing the support column 12 is omitted. Should be constructed.

(1-3) Modification Example FIG. 10 is an end view showing a modification of the connection mode of the lower end mounting member 16 of the flood prevention water stop structure 10 according to the first embodiment with the water stop panel 14 (FIG. 9). It is an end view of the corresponding part). In FIG. 10, the same members and parts as those of the members and parts of the flood prevention water stop structure 10 according to the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 9, in the flood prevention water stop structure 10 according to the first embodiment, the lower end portion of the water stop panel 14 is the outer surface (one part) of the other part 16B of the lower end part mounting member 16. It is attached to the attachment surface 16B1 which is the surface opposite to the side where 16A is located), but after checking the safety, the lower end of the water stop panel 14 is attached as in the modified example shown in FIG. , The lower end mounting member 16 may be mounted on the mounting surface 16B2 which is the inner surface of the other portion 16B (the surface on the side where the one portion 16A is located). The mounting surface 16B2 of the other portion 16B has a positional relationship substantially orthogonal to the mounting surface 16A1 of the other portion 16A.

FIG. 11 is an end view showing the lower end attachment member 30 which is a first modification of the lower end attachment member 16 of the flood prevention water stop structure 10 according to the first embodiment (end view of a portion corresponding to FIG. 9). FIG. 12 is an end view showing the lower end attachment member 32 which is a second modification of the lower end attachment member 16 of the flood prevention water stop structure 10 according to the first embodiment (end surface of the portion corresponding to FIG. 9). Figure). In FIGS. 11 and 12, the same members and parts as those of the flood prevention water stop structure 10 according to the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 11, the lower end mounting member 30, which is a first modification of the lower end mounting member 16, has an inverted T-shaped cross section obtained by cutting at a plane orthogonal to the longitudinal direction. The width of one portion 30A (a portion along the surface of the hardened concrete 100 (flange portion)) constituting the inverted T shape is, for example, about 200 mm, and the other portion 30B (a portion along the water blocking panel 14 (web portion)). ) Is, for example, about 100 mm. The thickness of one portion 30A and the other portion 30B of the lower end mounting member 30 is about 6 mm to 12 mm.

The lower end mounting member 30, which is the first modification, is attached to the surface of the concrete 100 on which one portion 30A is hardened by anchor bolts 22 arranged on each side of the one portion 30A separated by the other portion 30B. The water stop panel 14 is fixed by attaching the lower end portion thereof to the other portion 30B of the lower end portion attaching member 30. Therefore, by using the lower end mounting member 30, which is the first modification, the water blocking panel 14 can be more firmly fixed to the surface of the hardened concrete 100.

As shown in FIG. 12, the lower end mounting member 32, which is a second modification, is a member manufactured by bending a steel plate so that the cross-sectional shape obtained by cutting on a plane orthogonal to the longitudinal direction is L-shaped. , It is cheaper than the lower end mounting member 16 of the flood prevention water stop structure 10 according to the first embodiment.

Further, in the state of the steel plate before bending, when the steel plate is fixed to the surface of the hardened concrete 100 with anchor bolts 22, and then the steel plate is bent and processed into the lower end mounting member 32, the steel plate having low rigidity is used. Since it is fixed to the surface of the hardened concrete 100, even if the surface of the hardened concrete 100 has non-landing, it is easily deformed to follow the shape of the non-landing, and the surface of the hardened concrete 100 The gap between them can be made smaller.

(2) Second Embodiment FIG. 13 is a front view showing a flood prevention water stop structure 40 according to a second embodiment of the present invention, and FIG. 14 is a sectional view taken along line XIV-XIV of FIG. Is an end view taken along the line XV-XV of FIG.

In the flood prevention water stop structure 40 according to the second embodiment of the present invention, the upper end plate-like body 20 used in the flood prevention water stop structure 10 according to the first embodiment is used as an upper end portion L which is an upper end reinforcing member. This is an embodiment in which the upper end L-shaped body 42 is changed to the shape 42 and attached to the upper end of the water stop panel 14 with bolts 42C and nuts 42D. Except for this point, the flood prevention water stop structure 40 according to the second embodiment is the same as the flood prevention water stop structure 10 according to the first embodiment, and therefore the flood prevention water stop structure 10 according to the first embodiment. The same members and parts as those used in the above are designated by the same reference numerals, and the description thereof will be omitted.

The upper end L-shaped body 42 is an L-shaped body having an L-shaped cross section cut along a plane orthogonal to the longitudinal direction, and the outer surface 42A1 of one portion 42A and the outer surface 42B1 of the other portion 42B are substantially different from each other. There is an orthogonal positional relationship. As shown in FIG. 15, the outer surface 42A1 of one portion 42A is a side surface of the side surface of one portion 42A opposite to the side on which the other portion 42B is located, and is the outer surface of the other portion 42B. 42B1 is a side surface of the other portion 42B that is opposite to the side on which one portion 42A is located. The upper end L-shaped body 42 may be made of steel.

The upper end L-shaped body 42 is arranged along the upper end of the water blocking panel 14 so that the outer surface 42A1 of one portion 42A faces upward, and its width (width in the direction orthogonal to the water stopping panel 14). Is, for example, about 100 mm, and the width (width in the vertical direction) of the other portion 42B (the portion along the water blocking panel 14) is, for example, about 100 mm. The thickness of one portion 42A and the other portion 42B of the upper end L-shaped body 42 is about 6 mm to 12 mm. Further, as shown in FIGS. 13 and 14, the upper end L-shaped body 42 is divided into two at the position of the support column 12, and the length of the upper end L-shaped body 42 is the water area of the water stop panel 14. It is a little less than half the width along the shore, and a little less than 1 to 2 m.

The other portion 42B (portion arranged vertically) of the upper end L-shaped body 42 is a portion attached to the upper end portion of the water blocking panel 14, and is a penetration provided in the other portion 42B of the upper end L-shaped body 42. The holes are arranged so as to match the through holes provided at the upper end of the water stop panel 14, and the bolts 42C are inserted so as to insert the through holes, and the outer surface 42B1 of the other portion 42B is the stop of the water stop panel 14. The upper end L-shaped body 42 is arranged so as to be parallel to the water surface 14X. Then, the end of the bolt 42C is tightened with the nut 42D, and the upper end L-shaped body 42 is attached to the upper end of the water stop panel 14. It is better to attach the upper end L-shaped body 42 to the upper end of the water stop panel 14 in advance at a factory or the like and bring the water stop panel 14 with the upper end L-shaped body 42 attached to the site in less work on site. However, if the upper end L-shaped body 42 is attached to the upper end of the water stop panel 14 and then plating treatment such as molten zinc plating is not performed, the upper end L-shaped body 42 and the water stop panel 14 are separated. It may be carried to the site in a state and the upper end L-shaped body 42 may be attached to the upper end of the waterproof panel 14 in the field work.

Regardless of whether the upper end L-shaped body 42 is attached to the upper end of the water blocking panel 14 at the factory or in the field, the upper end L-shaped body 42 is attached to the upper end of the water blocking panel 14 by bolts 42C and nuts 42D. It is attached to the part and is attached without welding. Therefore, the flood prevention water stop structure 40 according to the second embodiment has fewer welded parts than the flood prevention water stop structure 10 according to the first embodiment (the flood prevention water stop structure according to the first embodiment). In the structure 10, welding is used to attach the upper end plate-shaped body 20), even when the upper end L-shaped body 42 is attached to the upper end of the water blocking panel 14 and then hot-dip zinc plating or the like is performed. , The adverse effect of welding strain due to the rise in base metal temperature is reduced.

(3) Third Embodiment In the above-described embodiment, the upper end plate-shaped body 20 is attached to the upper end portion of the water blocking panel 14 (first embodiment), and the upper end L-shaped body 42 which is a reinforcing member is attached. Although it is a configuration attached to the upper end portion of the water stop panel 14 (second embodiment), the configuration of the flood prevention water stop structure according to the present invention is not limited to these configurations, and the upper end of the water stop panel 14 The portion itself may be bent at a substantially right angle (third embodiment). With such a configuration, it is possible to reduce the number of parts, reduce the weight, and reduce the cost.

10, 40 ... Flood prevention water stop structure 12 ... Support 14 ... Water stop panel 14A ... Reinforcing steel plate 14X ... Water stop surface 16, 30, 32 ... Lower end mounting members 16A, 30A ... One part 16B, 30B ... Other part 16C , 28, 42C ... Bolts 16D, 22A, 26A, 28A, 42D ... Nuts 16A1, 16B1, 16B2 ... Mounting surfaces 18, 19 ... Side end plate-like bodies 18A, 19A ... Long holes 20 ... Upper end plate-like bodies 22 ... Anchor bolt 24 ... Joint material 26 ... U bolt 26B ... Nut 42 ... Upper end L-shaped body 42A ... One part 42B ... Other part 42A1, 42B1 ... Outer surface 100 ... Hardened concrete

Claims (14)

It is a flood prevention water stop structure installed along the shore of the water area.
With columns erected on the ground where at least part of the surface is concrete,
A water stop panel placed along the shore of the water area and attached to the support column,
A lower end mounting member having a predetermined length in the direction along the shore of the water area and provided for fixing between the lower end of the water blocking panel and the ground.
Have
The lower end mounting member has first and second mounting surfaces that are substantially orthogonal to each other, and the fixing between the lower end of the water blocking panel and the ground is such that the first mounting surface is fixed. The water stop panel is arranged parallel to the concrete surface of the ground and fixed to the concrete surface with anchor bolts, and the water stop panel is arranged so that the water stop surface of the water stop panel is parallel to the second mounting surface. The flood prevention water stop structure is characterized in that the lower end portion of the water stop panel is fixed to the second mounting surface. A plurality of the columns are provided along the shore of the water area.
Further, the predetermined length of the lower end mounting member is the length between the plurality of columns provided, or the end of the water stop panel in the direction along the shore of the water area and the closest to the end. The flood prevention water stop structure according to claim 1, wherein the structure corresponds to the length between the columns. The flood prevention water stop structure according to claim 1 or 2, wherein the support column is fixed to the concrete on the ground surface with an anchor bolt. The flood prevention water blocking structure according to any one of claims 1 to 3, wherein a joint material is provided between the first mounting surface of the lower end mounting member and the concrete surface. .. The flood prevention water stop structure further has an upper end plate-like body.
The upper end plate-like body is arranged so that the longitudinal direction is along the shore of the water area of the water stop panel, and is attached to the upper end of the water stop panel by welding, so that the maximum facing each other is maximum. The flood prevention water stop structure according to any one of claims 1 to 4, wherein one surface of the surface of the area faces upward. The flood prevention water stop structure further has an upper end reinforcing member attached to the upper end of the water stop panel.
Claim 1 is characterized in that the upper end reinforcing member is mechanically fixed to the upper end of the water stop panel so that the longitudinal direction is along the shore of the water area of the water stop panel. The flood prevention water stop structure according to any one of 4 to 4. The upper end reinforcing member has two outer surfaces that are substantially orthogonal to each other, one outer surface of the two outer surfaces faces upward, and the other of the two outer surfaces faces upward. The flood prevention water stop structure according to claim 6, wherein the outer surface of the water stop panel is arranged parallel to the water stop surface of the water stop panel and mechanically fixed to the upper end portion of the water stop panel. The flood prevention water stop structure according to any one of claims 1 to 4, wherein the water stop panel is bent so that the upper end portion thereof is substantially at a right angle. The flood prevention water stop structure further includes a side end plate-like body.
The side end plate-like body is attached to both ends of the water stop panel in the direction along the shore of the water area by welding, and is arranged from the lower end to the upper end of the water stop panel.
The flood prevention water stop structure according to any one of claims 1 to 8, wherein a surface having a maximum area facing the side end plate-like body is orthogonal to the water stop panel. A plurality of the columns and the water blocking panel are provided along the shore of the water area.
Of the side end plate-like bodies attached to the water stop panels adjacent to each other in the direction along the shore of the water area, at least a part between the adjacent side end plate-like bodies is the water stop panel. The flood prevention water stop structure according to claim 9, wherein the joint material is provided in the substantially height direction of the above. One of the adjacent side-end plate-shaped bodies is provided with a long hole in the horizontal direction, and the other of the adjacent side-end plate-shaped bodies is provided with a long hole in the vertical direction. Is provided, and bolts are inserted through the elongated holes long in the horizontal direction and the elongated holes long in the vertical direction, and the adjacent side end plate-like bodies are connected to each other by the bolts. The flood prevention water stop structure according to claim 9 or 10, characterized in that. The flood prevention water stop structure according to any one of claims 1 to 11, wherein the support column is an existing support column to which an existing protection fence for a vehicle is attached. The first and second struts, which are located on the ground where at least a part of the surface is concrete, and the water blocking panels, which are arranged along the shore of the water area and attached to the struts, are substantially orthogonal to each other. It is a method of constructing a flood prevention water stop structure having a lower end mounting member for fixing between the lower end of the water stop panel and the ground.
A support erection step of erection of the support on the ground along the shore of the water area,
A ground mounting step in which the first mounting surface of the lower end mounting member is arranged parallel to the concrete surface of the ground and fixed to the concrete surface with anchor bolts.
The water stop panel is arranged so that the second mounting surface of the lower end mounting member fixed to the concrete surface of the ground in the ground mounting step is parallel to the water stopping surface of the water stopping panel. The process of attaching the lower end of the water stop panel to fix the lower end of the water stop panel to the second mounting surface, and
The process of attaching the water stop panel support to the support column and the process of attaching the water stop panel support
A method of constructing a flood prevention water stop structure, which is characterized by having. The method for constructing a flood prevention water blocking structure according to claim 13, wherein the support column erection step is a step of fixing the support column to the concrete on the ground surface with anchor bolts.

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