Building foundation assembly type prestressed steel support connecting assembly

Abstract

This utility model discloses a prefabricated prestressed steel support connection assembly for building foundation pits. It includes a long opening on a lintel and an L-shaped plate installed at the end of a steel pipe support beam. The lintel rests against the side wall of the foundation pit, and the L-shaped plate fits over the surface of the lintel. A positioning insert is inserted through the top of the L-shaped plate into the inner cavity of the long opening. Two symmetrical long bolts pass through the positioning insert. An adjustment assembly is provided between the steel pipe support beam and the L-shaped plate. By operating the adjustment assembly, the L-shaped plate can be extended to rest on the lintel until its inner side completely abuts the surface of the long opening. At this point, the positioning insert is passed through the rectangular opening on the L-shaped plate and inserted into the inner cavity of the long opening for pre-fixation. Then, the two long bolts are installed, achieving adjustable connection distance, high adaptability, and reduced installation time through pre-fixation.

Description

Technical Field

[0001] This utility model belongs to the field of building foundation pit technology, and in particular relates to a prefabricated prestressed steel support connection component for building foundation pits. Background Technology

[0002] The foundation pit sidewall support system is the core load-bearing system in foundation pit engineering, used to control the deformation of the sidewall (retaining structure), balance water and soil pressure, and ensure the safety of foundation pit excavation. Its design and construction directly affect the stability of the foundation pit and the safety of the surrounding environment.

[0003] Horizontal supports for foundation pits are support structures installed along the horizontal direction in foundation pit engineering. They work in conjunction with retaining structures (such as diaphragm walls and piles) and their main function is to balance the lateral water and soil pressure on the retaining structure and limit its horizontal deformation. They are a core component in ensuring the safety of foundation pit excavation. When building horizontal supports, insufficient spacing is easily encountered when connecting the wainscoting beams and the support steel pipes. Moreover, bolt alignment during the connection process is time-consuming. Therefore, we designed a prefabricated prestressed steel support connection component for building foundation pits. The connection distance is adjustable, the adaptability is high, and the installation time is reduced by pre-fixing with plug-in inserts. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated prestressed steel support connection component for building foundation pits, which has the advantages of adjustable connection distance, high adaptability, and reduced installation time through plug-in pre-fixation, so as to solve the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a prefabricated prestressed steel support connection assembly for building foundation pits, which includes a long opening on a waist beam and an L-shaped plate installed at the end of a steel pipe support beam. The waist beam abuts against the side wall of the foundation pit, and the L-shaped plate is fitted onto the surface of the waist beam. A positioning insert plate is provided through the top of the L-shaped plate and inserted into the inner cavity of the long opening. Two symmetrical long bolts are provided on the positioning insert plate. An adjustment assembly is provided between the steel pipe support beam and the L-shaped plate. The adjustment assembly includes a cavity opened at the end of the steel pipe support beam. A threaded column is rotatably connected to one side of the inner cavity of the cavity. A square column is threadedly connected to the surface of the threaded column. One end of the square column extends to the outside of the steel pipe support beam and is welded to the L-shaped plate.

[0006] Preferably, a hexagonal rotating block is fixedly connected to the end of the cavity surface, and an operating groove for operating the hexagonal rotating block is provided on the surface of the elongated opening.

[0007] Preferably, the surface of the square column is welded with four reinforcing ribs, and one side of each reinforcing rib is welded to an L-shaped plate.

[0008] Preferably, the top of the L-shaped mounting plate has a rectangular opening for inserting a positioning plate.

[0009] Preferably, the positioning plate has a T-shaped cross-section and two holes for long bolts to pass through.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model allows the L-shaped mounting plate to extend and rest on the waist beam by operating the adjustment component until the inner side of the L-shaped mounting plate is completely against the surface of the long opening. At this time, the positioning insert plate is passed through the rectangular opening on the L-shaped mounting plate and inserted into the inner cavity of the long opening to achieve pre-fixation. Then, the two long bolts are installed to achieve adjustable connection distance, high adaptability, and reduced installation time through plug-in pre-fixation.

[0012] 2. By adding reinforcing ribs, this utility model increases the connection strength between the L-shaped slab and the square column, effectively preventing the possibility of breakage between the L-shaped slab and the square column and ensuring the stability of the connection. Attached Figure Description

[0013] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0014] Figure 1 This is a schematic diagram of one embodiment of the present utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of a waist beam and a steel pipe support beam according to an embodiment of the present invention;

[0016] Figure 3 This is a three-dimensional disassembled schematic diagram of the waist beam and steel pipe support beam according to an embodiment of the present invention;

[0017] Figure 4 This is a three-dimensional sectional view of a steel pipe support beam according to an embodiment of the present invention. Detailed Implementation

[0018] In the following description, embodiments of the prefabricated prestressed steel support connection assembly for building foundation pits of this utility model will be described with reference to the accompanying drawings.

[0019] Figure 1-4This invention illustrates an embodiment of a prefabricated prestressed steel support connection assembly for a building foundation pit. It includes a long opening 2 on a lintel 1 and an L-shaped plate 4 installed at the end of a steel pipe support beam 3. The lintel 1 rests against the side wall of the foundation pit, and the L-shaped plate 4 is fitted onto the surface of the lintel 1. A positioning insert 6 is inserted through the top of the L-shaped plate 4 into the cavity of the long opening 2. A rectangular opening 5 for inserting the positioning insert 6 is provided at the top of the L-shaped plate 4. The positioning insert 6 has a T-shaped cross-section and two holes for passing through long bolts 7. Two symmetrical long bolts 7 are inserted through the positioning insert 6. An adjustment assembly 8 is provided between the steel pipe support beam 3 and the L-shaped plate 4. The adjustment assembly 8 includes components located at the end of the steel pipe support beam 3. The cavity 81 of the part has a threaded post 82 rotatably connected to one side of the cavity 81. A square post 83 is threadedly connected to the surface of the threaded post 82. One end of the square post 83 extends through to the outside of the steel pipe support beam 3 and is welded to the L-shaped plate 4. A hexagonal rotating block 84 is fixedly connected to the end of the surface of the cavity 81. An operating groove 85 for operating the rotation of the hexagonal rotating block 84 is opened on the surface of the long opening 2. Four reinforcing ribs 86 are welded to the surface of the square post 83. One side of the reinforcing ribs 86 is welded to the L-shaped plate 4. By setting the reinforcing ribs 86, the connection strength between the L-shaped plate 4 and the square post 83 can be increased, effectively avoiding the possibility of breakage between the L-shaped plate 4 and the square post 83, and ensuring the stability of the connection.

[0020] Working principle: When using this utility model, if the distance between the L-shaped plate 4 and the waist beam 1 is insufficient, simply take a wrench, pass it through the operating groove 85 into the inner cavity of the cavity 81, and place it on the surface of the hexagonal rotating block 84. Operate the hexagonal rotating block 84 to rotate, which in turn drives the threaded column 82 to rotate. Due to the thread, the hexagonal rotating block 84 will extend outward to the outside of the steel pipe support beam 3 until the L-shaped plate 4 is firmly pressed against the surface of the long opening 2. Then, insert the positioning plate 6 from the top of the rectangular opening 5 on the L-shaped plate 4, and then insert and tighten the two long bolts 7. This will achieve a highly adaptable and efficient connection.

[0021] In summary: This prefabricated prestressed steel support connection assembly for building foundation pits allows the L-shaped slab 4 to extend and rest on the waist beam 1 by operating the adjustment component 8, until the inner side of the L-shaped slab 4 is completely against the surface of the long opening 2. At this point, the positioning insert 6 is passed through the rectangular opening 5 on the L-shaped slab 4 and inserted into the inner cavity of the long opening 2 to achieve pre-fixation. Then, the two long bolts 7 are installed, which achieves adjustable connection distance, high adaptability, and reduces installation time through plug-in pre-fixation.

Claims

1. A building foundation pit assembled prestressed steel support connecting assembly, characterized in that, The structure includes a long opening (2) on a waist beam (1) and an L-shaped plate (4) installed at the end of a steel pipe support beam (3). The waist beam (1) rests against the side wall of the pit. The L-shaped plate (4) is fitted onto the surface of the waist beam (1). A positioning insert (6) is inserted through the top of the L-shaped plate (4) and inserted into the cavity of the long opening (2). Two symmetrical long bolts (7) are inserted through the positioning insert (6). An adjustment assembly (8) is provided between the steel pipe support beam (3) and the L-shaped plate (4). The adjustment assembly (8) includes a cavity (81) opened at the end of the steel pipe support beam (3). A threaded column (82) is rotatably connected to one side of the cavity (81). A square column (83) is threaded onto the surface of the threaded column (82). One end of the square column (83) extends to the outside of the steel pipe support beam (3) and is welded to the L-shaped plate (4).

2. The building foundation pit assembled prestressed steel support connecting assembly according to claim 1, characterized in that, A hexagonal rotating block (84) is fixedly connected to the end of the surface of the cavity (81), and an operating groove (85) for operating the hexagonal rotating block (84) is provided on the surface of the long opening (2).

3. The building foundation pit assembled prestressed steel support connecting assembly according to claim 2, characterized in that, The surface of the square column (83) is welded with four reinforcing ribs (86), one side of which is welded to an L-shaped plate (4).

4. The prefabricated prestressed steel support connection assembly for building foundation pits according to claim 3, characterized in that, The top of the L-shaped plate (4) has a rectangular opening (5) for the positioning plate (6) to be inserted.

5. The prefabricated prestressed steel support connection assembly for building foundation pits according to claim 4, characterized in that, The positioning plate (6) has a T-shaped cross-section and two holes for long bolts (7) to pass through.

Images