Plugging structure for gap between prefabricated bottom plate and steel casing of steel-concrete combined hanging box

Abstract

The utility model discloses a plugging structure for a gap between a prefabricated bottom plate and a steel casing of a steel-concrete combined hanging box, which comprises an annular water bag and a bottom plate for mounting the annular water bag, the bottom plate is provided with a mounting groove at the inner side wall of a mounting hole along the circumferential direction, and the annular water bag is mounted on the bottom plate through the mounting groove. The annular water bag is used for abutting against the steel casing. The steel pile casing has the effect of reducing leakage of concrete at the gap between the mounting hole and the steel pile casing.

Description

Technical Field

[0001] The invention relates to the field of engineering construction, in particular to a plugging structure for a gap between a prefabricated bottom plate of a steel-concrete combined hanging box and a steel casing. Background Art

[0002] When building a bridge over a water plant, high pile caps are generally used. The so-called high pile caps mean that when building a bridge over a water plant, in order to meet the needs of the bridge foundation, steel casings are lowered into the water, and then the concrete bottom plate and steel sheet piles of the hanging box are prefabricated in the factory. After hoisting to the water surface, the concrete bottom plate is put on the steel casing, and then the steel sheet piles are installed on the bottom plate. The gap between the inner mold of the hanging box and the inner mold of the steel sheet piles is filled with concrete to make the hanging box a whole, and then concrete is poured into the top plate to form a cap.

[0003] Regarding the above-mentioned related technologies, in order to facilitate workers to put the concrete base plate on the steel casing, the diameter of the installation hole is usually set to be larger than the diameter of the steel casing; however, when pouring concrete to form the pedestal later, the concrete is easy to leak from the gap between the installation hole and the steel casing, resulting in waste of concrete. Summary of the invention

[0004] In order to reduce the leakage of concrete at the gap between the installation hole and the steel casing, the present application provides a sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing.

[0005] The present application provides a plugging structure for the gap between the prefabricated bottom plate of a steel-concrete composite hanging box and a steel casing, which adopts the following technical solution:

[0006] A sealing structure for the gap between a prefabricated bottom plate of a steel-concrete combined hanging box and a steel casing comprises an annular water bag and a bottom plate for installing the annular water bag. The bottom plate has an inner wall at a mounting hole provided with a mounting groove along the circumferential direction. The annular water bag is installed on the bottom plate through the mounting groove. The annular water bag is used to abut against the steel casing after being expanded by being filled with water.

[0007] By adopting the above technical solution, before pouring concrete to form the pedestal, water is filled into the annular water bag to expand the annular water bag until it abuts against the steel casing. At this time, the annular water bag forms a seal for the gap between the steel casing and the bottom plate, reducing the leakage of concrete from the gap, thereby reducing the waste of concrete; at the same time, because the annular water bag has a smaller deformation after being filled, it can provide a better seal.

[0008] Preferably, a supporting assembly is installed on the bottom plate for supporting the annular water bag that abuts against the steel casing after expansion.

[0009] By adopting the above technical solution, the annular water bag is supported by a supporting assembly, the bearing capacity of the annular water energy is increased, and the damage of the annular water bag caused by the heavy concrete squeezing the annular water bag is reduced, thereby enhancing the stability of the annular water bag seal.

[0010] Preferably, the support assembly includes a plurality of support frames, each of which is circumferentially spaced apart on the inner side wall of the base plate at the mounting hole, the support frame is slidably installed on the base plate in a direction approaching or moving away from the steel casing, the support frame is hollow, and the annular water bag is located inside the support frame and between the support frame and the base plate.

[0011] By adopting the above technical solution, the annular water bag is set in the support frame. When the annular water bag expands, it pushes each support frame to slide on the bottom plate, so that after the annular water bag expands and abuts against the steel casing, the support frame always maintains support for the annular water bag. Multiple support frames work together to improve the support effect.

[0012] Preferably, each of the support frames includes a connecting rod and a pair of sliding rods, the base plate is provided with sliding grooves on both side walls of the mounting groove in the vertical direction, the two sliding rods are slidingly installed on the base plate through the sliding grooves, the two ends of the connecting rod are respectively connected to one end of the two sliding rods close to the steel casing, and the annular water bag is located between the two sliding rods.

[0013] By adopting the above technical solution, the sliding rod slides in the sliding groove, fixing the sliding path of the support frame, reducing the deviation of the support frame after being pushed out by the expansion of the annular water bag, and at the same time, the annular water bag abuts against the connecting rod after expansion, which can stably push the support frame to slide.

[0014] Preferably, each of the sliding rods extending out of the bottom plate is fixedly provided with a support rod, one end of the support rod is connected to the sliding rod, and the other end of the support rod is connected to the steel casing.

[0015] By adopting the above technical solution, since it is difficult to install the support rod directly on the deformable annular water bag, the support rod is connected to the support frame, and the annular water bag is stably supported by the support frame.

[0016] Preferably, a magnetic attraction member is provided on one side of the connecting rod close to the steel casing.

[0017] By adopting the above technical solution, when the support frame slides to be close to the steel casing, the support frame is adsorbed on the steel casing by the magnetic suction piece for temporary stabilization, which is convenient for the staff to carry out subsequent construction.

[0018] Preferably, the annular water bag is connected to a water pipe, and one end of the water pipe away from the annular water bag is connected to a water pump.

[0019] By adopting the above technical solution, the water pump is started to fill water into the annular water bag through the water pipe, the water filling process is completed quickly, and the construction speed is accelerated.

[0020] Preferably, elastic blocks are arranged at intervals along the circumferential direction on one side of the annular water bag facing the steel casing.

[0021] By adopting the above technical solution, after the annular water bag is filled, the elastic block abuts against the steel casing, increasing the friction between the annular water bag and the steel casing, thereby reducing the deformation of the annular water bag caused by concrete squeezing the annular water bag and causing concrete leakage from the deformed area.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Before pouring concrete to form the cap, fill the annular water bag with water to expand it until it abuts against the steel casing. At this time, the annular water bag seals the gap between the steel casing and the bottom plate, reducing the leakage of concrete from the gap, thereby reducing the waste of concrete; at the same time, because the annular water bag has a smaller deformation after being filled, it can provide a better seal;

[0024] 2. The annular water bag is arranged in the support frame. When the annular water bag expands, it pushes each support frame to slide on the bottom plate, so that after the annular water bag expands and abuts against the steel casing, the support frame always maintains the support for the annular water bag. Multiple support frames work together to improve the support effect;

[0025] 3. When the support frame slides to close to the steel casing, the support frame is adsorbed on the steel casing by magnetic suction for temporary stability, which is convenient for the staff to carry out subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a top view of the overall structure of an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Annular water bag; 11. Elastic block; 2. Bottom plate; 21. Mounting hole; 22. Mounting slot; 3. Support assembly; 31. Support frame; 32. Connecting rod; 33. Sliding rod; 331. Sliding slot; 34. Magnetic element; 4. Support rod; 5. Steel casing. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The embodiment of the present application discloses a sealing structure for the gap between a prefabricated bottom plate of a steel-concrete composite hanging box and a steel casing.

[0032] Reference Figure 1 The sealing structure of the gap between the prefabricated bottom plate 2 of the steel-concrete combined hanging box and the steel casing 5 includes an annular water bag 1 and a bottom plate 2 for installing the annular water bag 1. The inner wall of the bottom plate 2 at the mounting hole 21 is provided with a mounting groove 22 along the circumferential direction. The annular water bag 1 is installed on the bottom plate 2 through the mounting groove 22. The annular water bag 1 is used to abut against the steel casing 5 after being filled with water and expanded; a water pipe is connected to the annular water bag 1, and one end of the water pipe away from the annular water bag 1 is connected to a water pump. The water pump can be started to inflate the annular water bag 1 and then expand it, so as to seal the gap between the steel casing 5 and the bottom plate 2.

[0033] Elastic blocks 11 are arranged at intervals along the circumferential direction on one side of the annular water bag 1 facing the steel casing 5. The elastic blocks 11 increase the friction between the annular water bag 1 and the steel casing 5, so that the annular water bag 1 can stably abut against the steel casing 5 under the squeeze of concrete.

[0034] Reference Figure 2 A support assembly 3 is installed on the bottom plate 2 for supporting the annular water bag 1 that is inflated and abuts against the steel casing 5; the support assembly 3 includes a plurality of support frames 31, each of which is arranged at intervals along the circumferential direction on the inner side wall of the bottom plate 2 at the mounting hole 21, and the support frames 31 are slidably installed on the bottom plate 2 in a direction approaching or moving away from the steel casing 5. The support frames 31 are hollow, and the annular water bag 1 is located in the support frames 31 and between the support frames 31 and the bottom plate 2.

[0035] Each support frame 31 includes a connecting rod 32 and a pair of sliding rods 33. The base plate 2 is provided with sliding grooves 331 on both side walls of the mounting groove 22 in the vertical direction. The two sliding rods 33 are slidingly installed on the base plate 2 through the sliding grooves 331. The two ends of the connecting rod 32 are respectively connected to one end of the two sliding rods 33 close to the steel casing 5, and the annular water bag 1 is located between the two sliding rods 33; a magnetic attraction part 34 is provided on the side of the connecting rod 32 close to the steel casing 5. In the present embodiment, the magnetic attraction part 34 is a magnet; after the annular water bag 1 is filled with water and expanded, it pushes the connecting rod 32 to drive the support frame 31 to move as a whole until the connecting rod 32 abuts against the steel casing 5. At this time, the magnetic attraction part 34 is adsorbed on the steel casing 5, forming a temporary lock on the connecting rod 32, which is convenient for workers to construct.

[0036] Reference Figure 1 A support rod 4 is fixed on each sliding rod 33 extending out of the bottom plate 2. One end of the support rod 4 is connected to the sliding rod 33 and the other end is connected to the steel casing 5. The support frame 31 is stabilized on the steel casing 5 through the support rod 4.

[0037] The implementation principle of the sealing structure of the gap between the prefabricated bottom plate 2 and the steel casing 5 of a steel-concrete combined hanging box in the embodiment of the present application is: after the bottom plate 2 is installed on the steel casing 5, the annular water bag 1 is flushed with water. After the annular water bag 1 squeezes the support frame 31 to abut against the steel casing 5, the flushing continues until the annular water bag 1 abuts against the steel casing 5.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plugging structure for the gap between the prefabricated bottom plate of a steel-concrete composite hanging box and a steel casing, characterized in that: The invention comprises an annular water bag (1) and a bottom plate (2) for mounting the annular water bag (1); the bottom plate (2) has an inner wall at a mounting hole (21) provided with a mounting groove (22) along the circumferential direction; the annular water bag (1) is mounted on the bottom plate (2) through the mounting groove (22); and the annular water bag (1) is used to abut against a steel casing (5) after being filled with water and expanded.

2. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 1 is characterized in that: A support assembly (3) is installed on the bottom plate (2) for supporting the annular water bag (1) that abuts against the steel casing (5) after expansion.

3. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 2 is characterized in that: The support assembly (3) comprises a plurality of support frames (31), each of the support frames (31) being arranged at intervals along the circumferential direction on the inner side wall of the base plate (2) at the mounting hole (21), the support frames (31) being slidably mounted on the base plate (2) in a direction approaching or moving away from the steel casing (5), the support frames (31) being hollow, and the annular water bag (1) being located inside the support frames (31) and between the support frames (31) and the base plate (2).

4. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 3 is characterized in that: Each of the support frames (31) includes a connecting rod (32) and a pair of sliding rods (33). The base plate (2) is provided with sliding grooves (331) on both side walls of the mounting groove (22) in the vertical direction. The two sliding rods (33) are slidingly mounted on the base plate (2) through the sliding grooves (331). The two ends of the connecting rod (32) are respectively connected to one end of the two sliding rods (33) close to the steel casing (5). The annular water bag (1) is located between the two sliding rods (33).

5. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 4 is characterized in that: A support rod (4) is fixedly provided on each of the sliding rods (33) extending out of the base plate (2), and one end of the support rod (4) is connected to the sliding rod (33) and the other end is connected to the steel casing (5).

6. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 4 is characterized in that: A magnetic attraction member (34) is provided on one side of the connecting rod (32) close to the steel casing (5).

7. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 1 is characterized in that: The annular water bag (1) is connected to a water pipe, and one end of the water pipe away from the annular water bag (1) is connected to a water pump.

8. The sealing structure for the gap between the prefabricated bottom plate of the steel-concrete composite hanging box and the steel casing according to claim 1 is characterized in that: Elastic blocks (11) are arranged at intervals along the circumferential direction on one side of the annular water bag (1) facing the steel casing (5).

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