Assembly type prefabricated supporting structure for foundation pit supporting

Abstract

The utility model relates to the technical field of foundation pit supporting, in particular to an assembly type prefabricated supporting structure for foundation pit supporting, which comprises a first prefabricated stand column and a second prefabricated stand column, a breast board is inserted between the first prefabricated stand column and the second prefabricated stand column in a sliding mode, and a positioning inserting shell is welded on the top of the inner side of the breast board. A supporting beam is inserted between the positioning inserting shells on the two sides, positioning mechanisms are movably connected to inner cavities in the left side and the right side of the supporting beam, each positioning mechanism comprises a connecting sliding plate, positioning springs are fixedly connected to inner cavities of the connecting sliding plates, and positioning pins are welded to the outer sides of the connecting sliding plates; splicing vertical plates are welded to the tops of the two sides of the first prefabricated stand column and the second prefabricated stand column. The first prefabricated stand column and the second prefabricated stand column are mounted at the top of the base shell, and the two sides of the soil retaining plate are inserted from the tops of the first prefabricated stand column and the second prefabricated stand column correspondingly, so that the peripheral side walls in the foundation pit can be supported, the overall splicing efficiency is high, and the practicability is better.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, specifically a prefabricated assembly support structure for foundation pit support. Background Technology

[0002] Foundation pit support is a temporary measure to support, reinforce, protect, and control groundwater on the sidewalls and surrounding environment of a foundation pit in order to ensure the safety of underground structure construction and the surrounding environment. Its core functions include stabilizing the soil, controlling deformation, and preventing soil erosion.

[0003] A search revealed that the announcement number CN221461221U, entitled "A Support Device for Easily Assembled Steel Structure Foundation Pit Support," includes a base plate and a support plate. The surface of the support plate is provided with an auxiliary device, which includes a fixing plate and a connecting sleeve fixed at intervals on the rear side wall of the support plate. Through research and analysis, it was found that although the auxiliary device improves the stable connection between the base plate, support plate, and foundation pit surface, reduces the inconvenience of quick fixing of the auxiliary device, and maximizes the fixing efficiency of the auxiliary device, it still has the following defects to a certain extent.

[0004] For example, the above-mentioned support device can only support a local part of the foundation pit. When it is necessary to support the entire inner wall of the foundation pit, it is not possible to quickly splice the support plates, which affects the construction efficiency of the overall support structure. It is also inconvenient to support the entire interior of the foundation pit, resulting in poor practicality. At the same time, it is not possible to quickly disassemble and assemble the support components of the support plates, which affects the overall assembly efficiency and increases labor intensity. In order to solve the above technical problems, we have designed a prefabricated prefabricated support structure for foundation pit support. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated assembly support structure for foundation pit support, which has the advantages of facilitating quick assembly and support of the entire inner wall of the foundation pit, improving practicality, and allowing for quick disassembly and assembly of support components, thereby improving the assembly efficiency of the support structure and reducing labor intensity. It solves the problems of the inability to quickly assemble the support plates of the entire inner wall of the foundation pit, resulting in poor practicality, time-consuming and labor-intensive disassembly and assembly of support components, which affect the assembly efficiency of the support structure and increase labor intensity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated assembly support structure for foundation pit support, comprising a first prefabricated column and a second prefabricated column, a retaining plate slidably inserted between the first and second prefabricated columns, a positioning shell welded to the top of the inner side of the retaining plate, a support beam inserted between the positioning shells on both sides, a positioning mechanism movably connected to the inner cavity of the support beam on both sides, the positioning mechanism comprising a connecting slide plate, a positioning spring fixedly connected to the inner cavity of the connecting slide plate, a positioning pin welded to the outer side of the connecting slide plate, an assembly vertical plate welded to the top of both sides of the first and second prefabricated columns, and an installation threaded groove provided at the bottom of the outer side of the first and second prefabricated columns.

[0007] Preferably, the bottom of the first precast column and the second precast column are fitted with a base shell, a positioning bolt is movably installed through the outer side of the base shell, and a pre-embedded rod is welded to the bottom of the base shell.

[0008] Preferably, there are four first prefabricated columns distributed at the four corners, and each of the first prefabricated columns has a first slot on both sides.

[0009] Preferably, the number of the second prefabricated columns is four and they are distributed in the center of the perimeter, and the second prefabricated columns are provided with second slots on both sides.

[0010] Preferably, mounting holes are provided on both sides of the surface of the assembled vertical plate, and positioning holes are provided on both the inner and outer surfaces of the positioning inserts on both sides.

[0011] Preferably, the inner sides of the left and right sides of the support beam are provided with installation cavities, and the outer side of the positioning pin passes through the positioning insert and is chamfered.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The first and second precast columns are installed on the top of the base shell. The retaining plates are inserted from the top of the first and second precast columns on both sides, which can support the side walls around the foundation pit. The overall splicing efficiency is high and the practicality is better.

[0014] The support beam is inserted into the positioning housings on both sides. The positioning spring pushes the positioning pin into the positioning hole, fixing the support beam inside the positioning housings on both sides. Push the positioning pin inward to move it out of the positioning hole, and take out the support beam upward. This makes the assembly and disassembly of the support beam more convenient and quick, effectively improving the assembly efficiency of the support structure and reducing labor intensity. Attached Figure Description

[0015] Figure 1 This is an axonometric view of the structure of this utility model;

[0016] Figure 2 This is a top axonometric view of the first prefabricated column, the second prefabricated column, and the base shell of this utility model;

[0017] Figure 3 This is a top axonometric view of a partial structure of the present invention;

[0018] Figure 4 This is a top sectional axonometric view of the support beam of this utility model;

[0019] Figure 5 This is a side axonometric view of the first precast column, the second precast column, and the retaining plate of this utility model.

[0020] In the diagram: 1. First precast column; 2. Second precast column; 3. Positioning bolt; 4. Retaining plate; 5. Assembled vertical plate; 6. Installation hole; 7. Positioning insert; 8. Support beam; 9. Base shell; 10. First slot; 11. Embedded rod; 12. Installation threaded groove; 13. Positioning hole; 14. Positioning mechanism; 15. Connecting slide plate; 16. Positioning spring; 17. Positioning pin; 18. Installation cavity; 19. Second slot. Detailed Implementation

[0021] Please see Figures 1-5 A prefabricated support structure for foundation pit support includes a first prefabricated column 1 and a second prefabricated column 2. A retaining plate 4 is slidably inserted between the first prefabricated column 1 and the second prefabricated column 2. The surface of the retaining plate 4 is coated with an anti-corrosion coating. A positioning insert 7 is welded to the top of the inner side of the retaining plate 4. A support beam 8 is inserted between the positioning inserts 7 on both sides. The inner cavities on both sides of the support beam 8 are movably connected to positioning mechanisms 14. The positioning mechanism 14 includes a connecting slide plate 15. The inner cavity of the connecting slide plate 15 is fixedly connected to a positioning mechanism 14. Spring 16, positioning pin 17 is welded to the outside of connecting slide plate 15, and assembly vertical plate 5 is welded to the top of both sides of the first precast column 1 and the second precast column 2. By setting the assembly vertical plate 5, the top of the first precast column 1 and the second precast column 2 can be spliced ​​and fixed with bolts to increase the support height. The bottom of the outside of the first precast column 1 and the second precast column 2 is provided with installation thread groove 12. By setting the installation thread groove 12, it can be used with positioning bolt 3 to position the base shell 9.

[0022] Please see Figure 1 The bottom of the first precast column 1 and the second precast column 2 is fitted with a base shell 9. A positioning bolt 3 is installed through the outer side of the base shell 9. A pre-embedded rod 11 is welded to the bottom of the base shell 9. By setting the pre-embedded rod 11, it can be inserted into the soil to limit the position of the base shell 9.

[0023] Please see Figure 2There are four first precast columns 1 distributed at the four corners. Each of the two sides of the first precast column 1 has a first slot 10. By setting the first slot 10 and the second slot 19, the two sides of the retaining plate 4 can be easily inserted into the first precast column 1 and the second precast column 2 for splicing.

[0024] Please see Figure 2 There are four second prefabricated columns 2, which are distributed in the center of the four sides. The second prefabricated columns 2 are provided with second slots 19 on both sides.

[0025] Please see Figure 3 The assembly vertical plate 5 has installation holes 6 on both sides of its surface. By setting the installation holes 6, the positioning bolts 3 can easily pass through the assembly vertical plate 5. The positioning inserts 7 on both sides have positioning holes 13 on their inner and outer surfaces. By setting the positioning holes 13, the positioning pins 17 can easily pass through the positioning inserts 7.

[0026] Please see Figure 4 The inner sides of the left and right sides of the support beam 8 are provided with installation cavities 18. The outer side of the positioning pin 17 passes through the positioning shell 7 and is chamfered. By setting the chamfer, the support beam 8 can be easily and quickly inserted into the inner cavity of the positioning shell 7.

[0027] In use, place the base shell 9 at the four corners of the bottom of the foundation pit and insert the pre-embedded rods 11 into the soil. Then, fix the first precast column 1 and the second precast column 2 on the top of the base shell 9. Then, insert the two sides of the retaining plate 4 from the top of the first precast column 1 and the second precast column 2 respectively. This can support the side walls of the foundation pit. The overall splicing efficiency is high. Then, insert the two sides of the support beam 8 into the positioning shells 7 on both sides and push them downwards. When fully inserted, the positioning spring 16 releases its elasticity and pushes the positioning pin 17 into the positioning hole 13, fixing the support beam 8 inside the positioning shells 7 on both sides. When disassembly is required, push the positioning pins 17 on both sides of the support beam 8 inwards to move them out of the positioning hole 13, and then take out the support beam 8 upwards. This makes the disassembly and assembly of the support beam 8 more convenient and quick, effectively improving the assembly efficiency of the support structure and reducing labor intensity.

[0028] In summary, this prefabricated support structure for foundation pit support, through the coordinated use of the first prefabricated column 1, the second prefabricated column 2, the retaining plate 4, the positioning insert 7, the support beam 8, the base shell 9, the first slot 10, the positioning mechanism 14, and the second slot 19, solves the problems of the inability to quickly assemble the entire inner wall support plate of the foundation pit, poor practicality, time-consuming and labor-intensive disassembly and assembly of support components, which affect the assembly efficiency of the support structure and increase labor intensity.

Claims

1. A prefabricated precast support structure for foundation pit support, comprising a first precast column (1) and a second precast column (2), characterized in that: A retaining plate (4) is slidably inserted between the first precast column (1) and the second precast column (2). A positioning insert (7) is welded to the top of the inner side of the retaining plate (4). A support beam (8) is inserted between the positioning inserts (7) on both sides. A positioning mechanism (14) is movably connected to the inner cavity on both sides of the support beam (8). The positioning mechanism (14) includes a connecting slide plate (15). A positioning spring (16) is fixedly connected to the inner cavity of the connecting slide plate (15). A positioning pin (17) is welded to the outer side of the connecting slide plate (15). An assembly vertical plate (5) is welded to the top of both sides of the first precast column (1) and the second precast column (2). An installation thread groove (12) is opened at the bottom of the outer side of the first precast column (1) and the second precast column (2).

2. The prefabricated assembly support structure for foundation pit support according to claim 1, characterized in that: The bottom of the first precast column (1) and the second precast column (2) are fitted with a base shell (9), and a positioning bolt (3) is installed through the outer side of the base shell (9). A pre-embedded insert rod (11) is welded to the bottom of the base shell (9).

3. The prefabricated assembly support structure for foundation pit support according to claim 1, characterized in that: The number of the first prefabricated columns (1) is four and they are distributed at the four corners. The first slots (10) are provided on both sides of the first prefabricated columns (1).

4. The prefabricated assembly support structure for foundation pit support according to claim 1, characterized in that: The number of the second prefabricated columns (2) is four and they are distributed in the center of the four sides. The second prefabricated columns (2) are provided with second slots (19) on both sides.

5. The prefabricated assembly support structure for foundation pit support according to claim 1, characterized in that: The assembly vertical plate (5) has installation holes (6) on both sides of its surface, and the positioning inserts (7) on both sides have positioning holes (13) on their inner and outer surfaces.

6. The prefabricated assembly support structure for foundation pit support according to claim 1, characterized in that: The support beam (8) has an installation cavity (18) on the inner side of its left and right sides, and the positioning pin (17) has a chamfer on the outer side of its positioning insert (7).

Images