WO2018166520A1 - Workboat for underwater foundation and construction method therefor - Google Patents

Abstract

A workboat for an underwater foundation, comprising a boat body (3), a lifting device (4), and a foundation construction device (5). The underwater foundation (1) can be divided into two structures, i.e., structure A and structure B: the structure A is a spiral tubular foundation (1A) with the bottom provided with excavating cutters during construction, and the structure B is a foundation (1B) with the bottom provided with chain cutters (7) during construction.

Description

Construction ship for underwater foundation and construction method thereof Technical field

The invention relates to a construction ship for underwater foundation and a construction method thereof, and belongs to the technical field of civil engineering foundation construction.

Background technique

The existing pier foundations in the water generally adopt the cofferdam method to create the construction conditions, and then the construction of the bored piles or the precast piles is carried out in the same way as the bridge piers on the land.

The existing dam foundation generally adopts diversion construction and cofferdam construction to create dry construction conditions, and the amount of excavation is large, and the amount of engineering is huge. After the dam is built, the cofferdam needs to be demolished, the construction period is long, and the cost is expensive. Summary of the invention

The invention provides a construction ship for underwater foundation and a construction method thereof, the purpose of which is to overcome the defects existing in the prior art, and the main advantages thereof: the hydraulic structure is manufactured in the factory segment or overall, in the construction ship After on-site assembly, the basic construction equipment is installed in sections or overall down, the construction is simple, the quality is good, the construction period is short, the cost is low, and it is suitable for various areas.

Technical Solution of the Invention: The construction vessel 2 for the underwater foundation 1 comprises a hull 3, a lifting device 4 and a foundation construction device 5, and the underwater foundation is divided into two structures A and B:

A. During construction, the spiral cylindrical foundation 1A with a digging knife at the bottom;

B. The foundation 1B with a chain knife at the bottom of the construction.

The hull 3 is provided with a supporting device 3-1 which is supported on the bottom of the water and bears the weight of all or part of the construction vessel 2.

The construction vessel 2 is composed of a plurality of hulls 3. After the foundation 1 of the water is completed, a plurality of hulls 3 are separated and operated.

The outside of the hull 3 is open or movable. After the foundation construction in the water is completed, the open outer side or the open outer side does not affect the operation of the hull.

The lifting device 4 lifts the foundation construction device 5 to another place after the completion of the underwater foundation 1 construction, and does not affect the operation of the hull.

The invention has the advantages that the hydraulic structure is manufactured in sections at the factory, and after the assembly on the construction ship site, the basic construction device is lowered overall, the construction is simple, the quality is good, the construction period is short, the cost is low, and the various areas are adapted.

DRAWINGS

1 is a schematic structural view of a foundation 1A in which the underwater foundation 1 is a segmented prefabrication, and is also a structural schematic view of a construction vessel 2A composed of a hull 3, a lifting device 4 and a foundation construction device 5A, and is also provided with a support device 3-1 for the hull 3 The supporting device 3-1 is supported on the bottom of the water and bears a structural diagram of the weight of all or part of the construction vessel 2;

Figure 2 is a view in the direction of arrow A of Figure 1, and is a schematic view showing the structure of the hull 3 on the outer side of the position of the foundation construction device 5A;

Fig. 3 is a structural schematic view showing the operation of the construction ship 2A after the separation of the plurality of hulls 3 after the completion of the foundation 1A, and the lifting device 4 is hoisted by the combination device 5A-2 of the device 5A after the completion of the foundation 1A in the water. The structure diagram of moving to another place does not affect the walking of the construction vessel 2A, and is also a structural schematic diagram after the outer movable baffle of the hull 3 is opened;

Figure 4 is a B-direction view of Figure 1, and is also a schematic view of the lifting device 4 is a driving structure;

Figure 5 is a schematic view showing the structure of the foundation construction device 5A of the foundation 1A composed of the fixed guide 5A-1 and the combination device 5A-2, and is also composed of the rotation device 5A-2-1 and the descending speed control device 5A-2-2. The structural schematic diagram of the combination device 5A-2 is also a schematic structural view of the excavating blade 1A-3 at the bottom of the foundation 1A and the spiral blade 1A-4 conveying the geotechnical;

6 is a schematic structural view of a foundation 1B in which the underwater foundation 1 is a segmented prefabrication, and is also a schematic structural view of a construction vessel 2B composed of a hull 3, a lifting device 4, and a foundation construction device 5B;

Figure 7 is a view in the direction of arrow A of Figure 6, and also a schematic view showing the structure of the hull 3 on the outer side of the position of the foundation construction device 5B;

Fig. 8 is a structural schematic view showing the operation of the construction ship 2B after the separation of the plurality of hulls 3 after the completion of the foundation 1B, and the lifting device 4 is lifted and moved to the hull after the completion of the foundation 1B in the water. 3, a structural diagram that does not affect the walking of the construction vessel 2B, and is also a structural schematic diagram after the outer movable baffle of the hull 3 is opened;

Figure 9 is a B-direction view of Figure 6, and is also a schematic view of the lifting device 4 is a driving structure;

Figure 10 is a schematic view showing the structure of the foundation construction device 5B of the foundation 1B composed of the fixed guide 5B-1 and the combination device 5B-2, and also by the chain cutter power transmission device 5B-2-1 and the spoil treatment device 5B-2- 2 is a schematic structural view of a combined device 5B-2 composed of a frame 5B-2-3, and is also a schematic structural view of a chain excavating device 8 composed of a device 5B-2-1 and a base 1B and a chain cutter 7;

Figure 11 is a view in the direction of arrow A of Figure 10, also showing the structure of the fixed guide 5B-1 consisting of the fixed frame 5B-1-1 and the guiding device 5B-1-2, and also the side of the base 4 with the bottom edged angle. Schematic diagram of a chain conveyor composed of a cover 6 and a chain cutter 7;

Figure 12 is a B-B view of Figure 10, also a cross-sectional view of the frame 5B-2-3 of the combination device 5B-2, and also a schematic view of the mud line 9-1 of the mud line device 9;

Figure 13 is a C-C view of Figure 10, and is also a schematic structural view of the mud nozzle 6-2 on the bottom of the base 1B;

Figure 14 is a schematic view showing the structure of the chain cutter 7, which is also a structural diagram of the chain 7-1 and the cutter 7-2, and is also a chain 7- consisting of A ten-byte 7-1-1 and B ten-byte 7-1-2. A schematic diagram of the ten-byte structure of 1 is also a schematic diagram of the structure of the chain 7-1 to achieve space bending;

Figure 15 is a structural schematic view showing the position where the construction vessel 2B is operated to the site setting, and the hull support device 3-1 is supported at the bottom of the water;

Figure 16 is a schematic view showing the structure of lifting the fixed guiding device 5B-1 on the construction vessel 2B to the construction position by the lifting device 4;

Figure 17 is a schematic view showing the structure in which the first stage foundation 1B-1 is loaded into the fixed guiding device 5B-1 by the lifting device 4, and the assembling assembly device 5B-2 is formed into a chain type excavating device;

18 is a schematic structural view of the combination device 5B-2 sinking the first segment base 1B-1 to a set depth;

Figure 19 is a schematic view showing the structure of the combination device 5B-2 separated from the first segment base 1B-1 by the lifting device 4;

Figure 20 is a structural schematic view showing the second stage foundation 1B-2 being loaded into the fixed guiding device 5B-1 by the lifting device 4, and the assembling assembly device 5B-2 is composed of a chain type excavating device;

21 is a schematic structural view of the combination device 5B-2, the first segment base 1B-1 and the second segment base 1B-2 being synchronously lowered to a set position;

Fig. 22 is a structural schematic view showing the construction vessel 2B moving away to the next station after the movable panel on the outer side of the hull 3 is opened.

1 in the figure is the foundation of the water, divided into 1A and 1B structures; 1A is the spiral cylindrical foundation with the excavating knife at the bottom during construction; 1A-1 is the first cylindrical section of the first section (ie the bottom section); 1A -2 is the second section of the spiral cylindrical foundation; 1A-3 is the bottom excavation knives of the first section (ie the bottom section) of the spiral cylindrical foundation; 1A-4 is the spiral blade conveying the geotechnical soil; 1B is the bottom of the construction with the bottom The foundation of the chain cutter; 1B-1 is the first section (ie the bottom section) foundation; 1B-2 is the second section foundation; 2 is the construction vessel, divided into 2A and 2B structures; 2A is the hull 3, the lifting device 4 and a construction vessel composed of a foundation construction device 5A; 2B is a construction vessel composed of a hull 3, a lifting device 4 and a foundation construction device 5B; 3 is a hull of the construction vessel 2; 4 is a lifting device constituting the construction vessel 2; 5 is the basic construction device constituting the construction vessel 2, divided into two structures of 5A and 5B; 5A is the basic construction device of the spiral cylindrical foundation 1A with the excavating knives at the bottom, including the fixed guiding device 5A-1 and the combined device 5A-2 5A-1 is a fixed guide; 5A-2 is a combined device including a rotating device 5A-2-1 and a descending speed control device 5A-2-2; 5A-2-1 is a rotating device; 5A-2-2 is The speed reducing control device; 5B is a foundation construction device with a base knife 1B at the bottom of the construction, including a fixed guiding device 5B-1 and a combined device 5B-2; 5B-1 is a fixed guiding device constituting the basic construction device 5B; 5B-1-1 is a fixed frame of the fixed guiding device 5B-1; 5B-1-2 is a guiding device of the fixed guiding device 5B-1; 5B-2 is a combined device constituting the basic construction device 5B, including a chain cutter power Transmission 5B-2-1, spoil treatment device 5B-2-2 and frame 5B-2-3; 5B-2-1 is a chain cutter power transmission; 5B-2-2 is a spoil treatment device; 5B -2-3 is a frame; 6 is a side cover of the base 1 with a beveled corner; 7 is a chain cutter for excavating geotechnical, consisting of a chain 7-1 and a cutter 7-2 fixed to the chain 7-1; 7-1 is the chain constituting the chain cutter 7; 7-1-1 is the A ten bytes constituting the chain ten bytes; 7-1-2 is the B ten bytes constituting the chain ten bytes; 7-2 is the composition The tool of the chain cutter 7. 8 is a chain excavating device consisting of the device 5B-2-1 and the base 1B and the chain knife 7; 9 is a mud pipeline device; 9-1 is a mud pipeline on the frame 5B-2-3 in the device 5B. ; 9-2 is the mud nozzle on the bottom of the foundation 1B.

detailed description

The construction vessel 2 for the underwater foundation 1 comprises a hull 3, a lifting device 4 and a foundation construction device 5, and the water foundation has a structure of 1 minute A and B:

A. During construction, the spiral cylindrical foundation 1A with a digging knife at the bottom;

B. The foundation 1B with a chain knife at the bottom of the construction.

The hull 3 is provided with a supporting device 3-1 which is supported on the bottom of the water and bears the weight of all or part of the construction vessel 2.

The construction vessel 2 is composed of a plurality of hulls 3. After the foundation 1 of the water is completed, a plurality of hulls 3 are separated and operated.

The foundation construction device 5 is an integral part of the hull 3.

The hull 3 is open or movable outside the position where the foundation construction device 5 is placed. After the foundation construction in the water is completed, the open outer side or the open outer side does not affect the operation of the hull.

The lifting device 4 lifts the foundation construction device 5 to another place after the foundation 1 of the water is completed, and does not affect the operation of the hull.

The lifting device 4 is a driving structure, that is, a track on which the lifting device 4 is operated above the hull, and the lifting device 4 operates in the X direction or in both X and Y directions.

The bottom is provided with a foundation construction device 5A of a spiral cylindrical foundation 1A of a digging knife.

The foundation construction device 5B of the foundation 1B of the chain cutter is provided at the bottom of the construction.

The underwater foundation is the bridge foundation or the dam foundation.

The underwater foundation 1 is a foundation 1B prefabricated or integrally prefabricated at the factory, and the construction method comprises the following steps:

1) Run the construction vessel 2B to the location set in the site;

2) supporting the hull support device 3-1 to the bottom of the water and lifting the hull 3 to a set height;

3) lifting the fixed guiding device 5B-1 of the foundation construction device 5B on the construction vessel 2 to the construction position by the lifting device 4;

4) transporting the first section foundation 1B-1 to the site by the lifting device 4, loading into the fixed guiding device 5B-1, and installing the chain cutter;

5) installing the assembly device 5B-2, connecting the chain cutter of the combination device 5B-2 with the chain cutter at the top of the first segment foundation 1B-1 to form a chain excavation device;

6) starting the chain cutter power transmission device 5B-2-1, the combination device 5B-2 sinks the first segment foundation 1B-1 to a set depth;

7) separating the combination device 5B-2 from the first segment base 1B-1;

8) loading the second base 1B-2 into the fixed guiding device 5B-1;

9) The combination device 5B-2, the first segment base 1B-1 and the second segment base 1B-2 are synchronously lowered to the set position;

10) Repeat 8) and 9) to complete the construction of the first foundation 1B;

11) After the movable panel on the outside of the hull 3 is opened, the construction vessel 2B is driven to the next station.

The invention is further described below in conjunction with the drawings:

As shown in Fig. 1 to Fig. 5, the foundation 1 for the water is a spiral cylindrical foundation 1A with an excavation knife at the bottom, and the construction vessel 2A of the foundation 1A includes a hull 3, a lifting device 4 and a foundation construction device 5A; The hull 3 is provided with a supporting device 3-1 which is supported on the bottom of the water and bears the weight of all or part of the construction vessel 2A; the foundation construction device 5A comprises a fixed guiding device 5A-1 and a combined device 5A-2, the combined device 5A -2 includes a rotating device 5A-2-1 and a descending speed control device 5A-2-2. The foundation construction device 5A is located at the edge of the hull 3. When the underwater foundation 1A is completed higher than the bottom of the hull 3, the outer side of the hull 3 is open. Or active, after the completion of the foundation 1A in the water, the open outer side or the open outer side avoidance foundation 1A does not affect the operation of the hull; the lifting device 4 hangs the combination device 5A-2 of the device 5A after the completion of the underwater foundation 1A construction Lifting to another position does not affect the operation of the hull 3; the lifting device 4 is a driving structure, that is, a track on which the lifting device 4 is operated above the hull, and the lifting device 4 operates in the X direction or in both X and Y directions. During construction, drive the rotating device 5A-2-1 to make the foundation 1A rotation, the falling speed of the cylinder base 1A is controlled by the descending speed control device 5A-2-2, so that the cutter 1A-3 at the bottom of the base 1A cuts the annular rock at the bottom of the base 1A, and under the action of the bottom tapered surface, The cut rock is introduced into the spiral blade 1A-4 of the foundation 1A, and the spiral blade 1A-4 transports the cut rock at the bottom to the upper portion and gradually descends to the set position.

As shown in FIGS. 6 to 14, the foundation 1 for the water is the foundation 1B with a chain cutter at the bottom of the construction, and the construction vessel 2B of the foundation 1B includes the hull 3, the lifting device 4 and the foundation construction device 5B; the hull 3 is provided The supporting device 3-1, the supporting device 3-1 is supported on the bottom of the water, and bears the weight of all or part of the construction vessel 2B; the foundation construction device 5B includes the fixed guiding device 5B-1 and the combined device 5B-2, and the combined device 5B-2 includes the chain Knife power transmission 5B-2-1, spoil treatment device 5B-2-2 and frame 5B-2-3, device 5B-2-1 drives the chain cutter to run along the track on the foundation 1B, the chain knife mining foundation The rock at the bottom of 1B, and the excavated rock and soil is brought to the top, the device 5B-2-2 separates the rock and soil from the bottom of the base 1B with the chain knife, and the device 5B-2 is synchronized with the base 1B. The foundation construction device 5B is located at the edge of the hull 3. When the underwater foundation 1B construction is completed higher than the bottom of the hull, the outer side of the fixed guiding device 5B-1 of the foundation construction device 5B is open or movable, after the foundation 1B construction in the water is completed. , the open outer side or the open outer side avoidance foundation 1B does not affect the operation of the hull; the lifting device 4 After the completion of the foundation 1B in the water, the combination device 5B-2 of the device 5B is lifted and moved to another place, and does not affect the operation of the hull 3; the lifting device 4 is a driving structure, that is, a track on which the lifting device 4 is operated above the hull, The lifting device 4 operates in the X direction or in both X and Y directions.

As shown in Fig. 15 to Fig. 22, the underwater foundation 1 is a foundation 1B prefabricated or integrally prefabricated at the factory, and the construction method includes the following steps:

1) Run the construction vessel 2B to the location set in the site;

2) supporting the hull support device 3-1 to the bottom of the water and lifting the hull 3 to a set height;

3) lifting the fixed guiding device 5B-1 of the foundation construction device 5B on the construction vessel 2 to the construction position by the lifting device 4;

4) transporting the first section foundation 1B-1 to the site by the lifting device 4, loading into the fixed guiding device 5B-1, and installing the chain cutter;

5) installing the assembly device 5B-2, connecting the chain cutter of the combination device 5B-2 with the chain cutter at the top of the first segment foundation 1B-1 to form a chain excavation device;

6) starting the chain cutter power transmission device 5B-2-1, the combination device 5B-2 sinks the first segment foundation 1B-1 to a set depth;

7) separating the combination device 5B-2 from the first segment base 1B-1;

8) loading the second base 1B-2 into the fixed guiding device 5B-1;

9) The combination device 5B-2, the first segment base 1B-1 and the second segment base 1B-2 are synchronously lowered to the set position;

10) Repeat 8) and 9) to complete the construction of the first foundation 1B;

11) After the movable panel on the outside of the hull 3 is opened, the construction vessel 2B is driven to the next station.

Claims (11)

A construction vessel for underwater foundations, characterized in that a construction vessel (2) for a water foundation (1) comprises a hull (3), a lifting device (4) and a foundation construction device (5), an underwater foundation (1) ) A and B structures: A. The construction is a spiral cylindrical foundation with a digging knife at the bottom (1A); B. The foundation (1B) with a chain knife at the bottom of the construction. A construction vessel for underwater foundation according to claim 1, characterized in that said hull (3) is provided with a supporting device (3-1), and the supporting device (3-1) is supported at the bottom of the water, and bears all Or the weight of part of the construction vessel (2). A construction vessel for underwater foundation according to claim 1, characterized in that said construction vessel (2) is composed of a plurality of hulls (3), and after the foundation of the water (1) is completed, Multiple hulls (3) are operated after separation. A construction vessel for an underwater foundation according to claim 1, characterized in that said foundation construction device (5) is an integral part of the hull (3). A construction vessel for underwater foundation according to claim 4, characterized in that said hull (3) is open or movable outside the position where the foundation construction device (5) is placed, after completion of the foundation construction in the water The open outer side or the open outer side does not affect the operation of the hull. A construction vessel for underwater foundation according to claim 1, characterized in that the lifting device (4) lifts the foundation construction device (5) to another after the foundation (1) of the water is completed. Does not affect the operation of the hull. A construction ship for underwater foundation according to claim 1, characterized in that the lifting device (4) is a driving structure, that is, a track on which a lifting device (4) is arranged above the hull, lifting The device (4) operates in the X direction or in both X and Y directions. A construction vessel for an underwater foundation according to claim 1, characterized in that the foundation construction device (5A) of the spiral cylindrical foundation (1A) with a digging knife at the bottom comprises a fixed guiding device (5A- 1) and a combination device (5A-2), the combination device (5A-2) includes a rotation device (5A-2-1) and a descending speed control device (5A-2-2). A construction ship for an underwater foundation according to claim 1, characterized in that the foundation construction device (5B) having a base (1B) with a chain knife at the bottom of the construction includes a fixed guide (5B-1). And combination device (5B-2), the combination device (5B-2) includes a chain cutter power transmission device (5B-2-1), a spoil disposal device (5B-2-2), and a frame (5B-2- 3). A construction vessel for an underwater foundation according to claim 1, wherein said underwater foundation is a bridge foundation or a dam foundation. A construction vessel for an underwater foundation according to claim 1, characterized in that said underwater foundation (1) is a foundation (1B) prefabricated or integrally prefabricated at the factory, and the construction method comprises the following steps: 1) Run the construction vessel (2B) to the location set in the site; 2) Support the hull support device (3-1) to the bottom of the water and lift the hull (3) to the set height; 3) Lifting the fixed guiding device (5B-1) of the foundation construction device (5B) on the construction vessel (2) to the construction position with the lifting device (4); 4) The first section foundation (1B-1) is transported to the site by the lifting device (4), loaded into the fixed guiding device (5B-1), and the chain cutter is installed; 5) connecting the chain cutter of the combined device (5B-2) with the chain cutter at the top of the first segment foundation (1B-1) to form a chain excavating device; 6) start the chain cutter power transmission device (5B-2-1), and the combination device (5B-2) sinks the first segment foundation (1B-1) to a set depth; 7) separating the combined device (5B-2) from the first segment base (1B-1); 8) loading the second section foundation (1B-2) into the fixed guiding device (5B-1); 9) the combination device (5B-2), the first segment base (1B-1) and the second segment base (1B-2) are synchronously descended to the set position; 10) Repeat 8) and 9) to complete the construction of the first foundation (1B); 11) After the movable panel on the outside of the hull (3) is opened, the construction vessel (2B) leaves to the next station.

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