JP2003129495A - Jig and method for installing precast foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation jig and a method for installing a precast foundation, which can facilitate alignment of the precast foundation. SOLUTION: Insertion parts 21, into which anchor bolt 12 are to be inserted, are formed in a top surface on both end sides of the installation jig 2; and threaded hole parts 23, into which screws 22 for pushing the precast foundations 1 are to be fitted, are formed in one of vertical piece parts. The precast foundation 1A is placed so that the anchor bolts 12 of the already installed precast foundation 1B can be inserted into the insertion parts 21 on the other side of the installation jig 2; the screws 22 are also fitted into the hole parts 23 on the side of the already installed precast foundation 1B; and when a side surface of the precast foundation 1B is pushed by the screws 22, both the precast foundations 1A and 1B are arranged in a state of being brought into pressure contact with the other-side vertical piece part of the installation jig 2, so that the alignment can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast foundation installation jig and installation method.

[0002]

2. Description of the Related Art As a method of constructing a building foundation, a precast foundation having a flat and substantially cubic shape is prepared in advance in a factory, which is then transported to the site and hoisted by a crane one by one to a predetermined A method is known in which they are placed side by side in an arrangement and are connected to each other, and concrete is poured at the connection site or the like on site.

FIG. 5 Precast foundation 50 with wire 51
It is shown that it is being hung up by and is being installed next to the precast foundation 50 that has already been installed. Since the anchor bolt 50a projects from the upper surface of the precast foundation 50, an eye nut 52 is attached to the anchor bolt 50a, and the wire 5 is attached to the ring portion of the eye nut 52.
It is lifted by hooking the tip (hook, etc.) of 1.

[0004]

However, when the precast foundation 50 hoisted by the crane is installed next to the precast foundation 50 which has already been installed, the precast foundation 50 must be placed accurately even if the operator assists the precast foundation 50. It is difficult. Usually, after placing the precast foundation 50, the precast foundation 50 is moved by using a burl or the like, and the work is carried out according to the pre-stretched water thread.

In view of the above circumstances, the present invention provides an installation jig and a method for installing a precast foundation that can easily take out the street of the precast foundation.

[0006]

In order to solve the above-mentioned problems, the precast foundation installation jig of the present invention has a substantially U-shaped cross section having a width wider than the thickness of the precast foundation and is adjacent to each other. An insertion portion having a length that straddles the precast foundation to be arranged, and an insertion portion for inserting an anchor bolt projecting on the upper surface of the precast foundation and a screw hole portion to which a screw is attached so that the side surface of the precast foundation can be pushed. It is characterized by having and on both ends. In this installation jig, one vertical piece having a substantially U-shaped cross section is used as a reference surface, and the side surface of the precast foundation is brought into contact (pressure contact) with the vertical piece when the passage in the installation method described later is taken out.

According to the method for installing a precast foundation of the present invention, when the next precast foundation is installed adjacent to the already installed precast foundation, the installation jig is arranged so as to straddle both precast foundations, and the insertion is performed. It is characterized in that an anchor bolt is inserted through the part and the side face of the precast foundation is pushed out by the screw attached to the screw hole part so as to pass through.

When the precast foundation is hoisted, the installation jig may be mounted on the precast foundation. Further, it is preferable to hold the suspended state of the precast foundation to be installed and push the side surface of the precast foundation already installed with a screw.

Further, in the installation jig for the precast foundation, if the opening is formed in the central portion,
Through this opening, it is possible to fill the connection site with concrete.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An installation jig and installation method for a precast foundation according to an embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of a precast foundation 1. The precast foundation 1 has a flat and substantially cubic shape, and an anchor bolt 12 for fixing a base of a house projects from an upper end surface of the precast foundation 1. Then, through holes 11 are formed in the vicinity of both ends on the lower side of the precast foundation 1 in the short side direction.

FIG. 2 is a perspective view showing the installation jig 2 of the precast foundation 1. This installation jig 2 has a substantially U-shaped cross section having a width wider than the thickness (length in the short side direction) of the precast foundation 1, and the length over which the precast foundations 1 and 1 are arranged adjacent to each other. It is a jig made of steel having. Then, on both end sides of the installation jig 2 and on the upper surface portion (horizontal surface portion) having a substantially U-shaped cross section, insertion portions 21 for inserting the anchor bolts 12 projecting from the upper surface of the precast foundation 1 are formed. A screw hole portion 23 into which a screw 22 is attached so that the precast foundation 1 can be pushed is formed on one side (on the front side in the drawing) of the vertical piece having a substantially U-shaped cross section. The other of the vertical pieces in the substantially U-shaped cross section serves as a reference surface when the precast foundation 1 is set out. Also, in this embodiment,
An opening 24 is formed in the center of the installation jig 2. The installation jig 2 may be manufactured by bending and punching a single steel plate (or cutting with a gas burner) (see FIGS. 2 and 3 (a)), and the upper surface (horizontal) in a substantially U-shaped cross section. It may be manufactured by using a flat plate member that forms a surface portion) and a member having an L-shaped cross section that forms a vertical piece portion and fixing these members by welding or the like (see FIGS. 3B and 4). .

FIG. 3A shows a precast foundation 1 (1A).
2B is a perspective view showing a state in which the precast foundation 1A to be installed next is brought close to the precast foundation 1 (1B) already installed. When performing this hoisting work, first, rod-shaped double-cut bolts (not shown) are inserted into the through holes 11 of the precast foundation 1, and eye nuts 14 are attached to both ends of these double-cut bolts. 4) 16 is engaged with the hook 15 provided at the tip. In this embodiment, the installation jig 2 is attached to the precast foundation 1A when performing this lifting. This attachment is performed by the insertion portion 21 of the installation jig 2.
The anchor bolt 12 is inserted into the screw hole 23 and the screw 22 is attached to the screw hole 23. In this way, the installation jig 2
In the state in which the pre-cast foundation 1A is attached, the vertical piece (the side where the screw hole 23 is not formed) of the installation jig 2 having a substantially U-shaped cross section is pressed against the side surface of the pre-cast foundation 1A, and the installation is performed. The jig 2 projects from the upper corner of the precast foundation 1A.

Then, as shown in FIG. 4 (a), the precast foundation 1A to be installed next so that the portion of the installation jig 2 protruding from the upper corner of the precast foundation 1A fits into the already installed precast foundation 1B. On the ground. At this time, the precast foundation 1 already installed
The anchor bolt 12 of B is inserted into the insertion portion 21 on the other side of the installation jig 2. In this way, by fitting the installation jig 2 to the precast foundation 1B already installed,
The precast foundation 1A will be placed at a substantially defined position with respect to the precast foundation 1B already installed.

Then, a screw 22 is also attached to the screw hole portion 23 on the side of the precast foundation 1B that has already been installed, the side surface of the precast foundation 1B is pushed by this screw 22, and the side surface on the opposite side is the other side of the installation jig 2. The vertical piece on the side is pressed (at this time, movement occurs in the precast foundation 1A). As a result, both of the precast foundations 1A and 1B are pressed against and aligned with the vertical piece on the other side of the installation jig 2 so that they can pass through (note that the anchor bolt does not hit the insertion portion 21). In addition, the insertion portion 21 may be made larger). Here, instead of completely placing the precast foundation 1A on the ground, the precast foundation 1
By keeping the suspended state of A, it becomes possible to easily move the precast foundation 1A by pushing the side surface of the precast foundation 1B with the screw 22.

Both precast foundations 1A and 1B have aggregates (not shown) protruding from the side faces orthogonal to the passing direction, and these aggregates are connected to each other by bolts or the like.
Concrete is poured into this connecting portion, but since the installation jig 2 has the opening 24 formed in the central portion, this concrete filling can be performed smoothly. Also, precast foundation 1 so that the entire foundation has an inverted T shape.
Concrete is also placed around the lower part of the.

In the above example, the precast foundation 1
Although it was decided to hang up using the through hole 11 formed in the above, for the precast foundation 1 that does not have such a through hole 11, an eye nut may be attached to the anchor bolt 12 to hang up. . However, it is possible to reduce the inclination and swing of the precast foundation 1 during the lifting by using the through hole 11 to lift the precast foundation 1.
The work of fitting the installation jig 2 into the precast foundation 1B already installed becomes easy.

[0018]

As described above, according to the present invention, by using the installation jig, it is possible to place the precast foundation to be installed next in a substantially prescribed position with respect to the precast foundation that has already been installed. By mounting and screwing the screws into the screw holes of the installation jig located on the side of the installed precast foundation, both precast foundations are lined up in pressure contact with the vertical piece of the installation jig that has a substantially U-shaped cross section. This brings about the effect that the street can be easily put out.

[Brief description of drawings]

FIG. 1 is a perspective view of a precast foundation.

FIG. 2 is a perspective view of an installation jig according to the embodiment of the present invention.

FIG. 3 is a diagram showing an embodiment of the present invention, in which FIG. 3A is a perspective view of a precast foundation in a hoisting state, and FIG. 3B is a precast foundation on which a precast foundation in a hoisting state has already been installed. It is a perspective view of the state brought close to.

FIG. 4 is a view showing the embodiment of the present invention, and an explanatory view showing a work of passing the precast foundations adjacent to each other.

FIG. 5 is a perspective view showing a conventional precast foundation installation method.

[Explanation of symbols]

1 Precast foundation 2 Installation jig 12 Anchor bolt 16 wires 21 insertion part 22 screws 23 Screw hole 24 openings

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masaaki Suzuki             6-6 Sakyo, Nara City, Nara Stock Association 2             Inside Yamato Research Institute F-term (reference) 2D046 BA26 BA27                 2E174 AA03 BA02 CA03 DA11 DA21                       DA33 DA57 DA58

Claims (5)

[Claims] 1. An anchor bolt that has a substantially U-shaped cross section having a width wider than the thickness of the precast foundation, has a length that straddles the adjacent precast foundation, and projects onto the upper surface of the precast foundation. An installation jig for a precast foundation, comprising: an insertion part for inserting a precast foundation and a threaded hole into which a screw is attached so that a side surface of the precast foundation can be pushed. 2. The precast foundation installation jig according to claim 1, wherein an opening is formed in a central portion of the precast foundation installation jig. 3. When the next precast foundation is installed adjacent to the already installed precast foundation, the installation jig according to claim 1 or 2 is arranged so as to straddle both precast foundations, and the insertion part An installation method of a precast foundation, characterized in that an anchor bolt is inserted through and the side surface of the precast foundation is pushed out by a screw attached to a screw hole portion to allow passage. 4. The precast foundation installation method according to claim 3, wherein the installation jig is mounted on the precast foundation when the precast foundation is lifted. 5. The method for installing a precast foundation according to claim 3 or 4, wherein the precast foundation to be installed is held in a suspended state and a side surface of the precast foundation already installed is pushed by a screw. How to install the precast foundation.