A foundation pit beam string steel support connection structure

Abstract

The present invention relates to a foundation pit tension beam steel support connection structure, comprising a tension beam, a steel support, a concrete purlin, a concrete corbel, and a column. The steel tie rods at both ends of the tension beam are embedded and fixed in the concrete corbel. The structure also comprises a first column top connection piece, a bracket, and a second column top connection piece. The two sides of the second column top connection piece are each connected to a section of the bracket, and the other end of the bracket is embedded and fixed in the concrete corbel. The second column top connection piece is supported by the column below. The first top connection piece is a plurality of independent monomers, each of which is fixedly connected to a different position of the lower part of the steel support, and the lower part of each first top connection piece is supported by its own column. In the tension beam part of the present invention, one end of the bracket is connected to the corbel, and the other end is connected to the second column top connection piece. The column at the top of the arc and the concrete corbel jointly bear the gravity of the tension beam, which can reduce the number of columns, construction difficulty and construction cost.

Description

Technical Field

[0001] The invention relates to a foundation pit tension beam steel support connection structure, belonging to the technical field of building construction. Background Art

[0002] In order to ensure the safety of underground structure construction and the surrounding environment of the foundation pit, it is necessary to adopt support, reinforcement and protection measures for the side walls of the foundation pit and the surrounding environment. Whether it is a deep foundation pit project for high-rise buildings or subway construction, since most of them are excavated in cities, there are usually various structures such as traffic arteries, existing buildings or pipelines around the foundation pit. In order to ensure the safety of the surrounding environment of the foundation pit, save construction time, save costs, and be green and environmentally friendly, the steel beam string support system is widely used.

[0003] In the prior art, the tensioned beam needs to be supported by multiple columns. The large number of columns affects the construction period and cost. The steel truss support is connected to the column by a long bracket, which requires too much bracket material. The arrangement of the column extension support is not free, and the adjustable space of the column arrangement position is small. Summary of the invention

[0004] The purpose of the present invention is to provide a foundation pit tension beam steel support connection structure, in which a second column top connection piece is set, and the tension beam part is connected to the concrete corbel through one end of the bracket and the other end is connected to the column top connection piece, so that the need for multiple columns as fulcrums can be avoided, thereby reducing the number of columns; the steel truss support directly sets the column on the bottom surface of the support, and adjusts the connection with the support in any direction through the first column top connection piece, each connection position is independent and freely arranged, and no long bracket is required for connection.

[0005] The present invention adopts the following technical solutions:

[0006] A foundation pit tension beam steel support connection structure includes a tension beam 3, a steel support 4, a concrete purlin 2, a concrete corbel 1, and a column 6. The steel tension rods at both ends of the tension beam are embedded and fixed in the concrete corbel 1. The structure also includes a first column top connector 5, a bracket 11, and a second column top connector 7. The two sides of the second column top connector 7 are respectively connected to a section of the bracket 11, and the other end of the bracket 11 is embedded and fixed in the concrete corbel 1. The lower part of the second column top connector 7 is supported by the column 6. The first column top connector 5 is a plurality of independent monomers, each of which is fixedly connected to a different position of the lower part of the steel support 4, and the lower part of each first column top connector 5 is supported by its own column 6.

[0007] Preferably, it also includes a top plate 8, which is fixedly connected to the top of the column 6, and a plurality of arc-shaped mounting holes are provided on the top plate 8, and the first column top connecting member 5 and the second column top connecting member 7 are fixedly connected to the top plate 8 through the arc-shaped mounting holes.

[0008] Preferably, the second column top connecting member 7 is in a cross shape, and the cross point constitutes the connection position with the column 6.

[0009] Preferably, a plurality of stiffening plates 9 are fixedly provided between the upper portion of the upright column 6 and the top plate 8 .

[0010] Preferably, a clamp 10 is further included, and the lower part of the steel support 4 is fixedly connected to the first column top connecting member 5 through the clamp 10 .

[0011] Furthermore, the top plate 8 is circular, and the plurality of arc-shaped mounting holes are cocentric with the top plate 8 .

[0012] Preferably, the concrete corbel 1 also serves as a lateral force point for the steel support 4 .

[0013] Preferably, the first column top connector 5 and the steel support 4 are in a vertical state.

[0014] The beneficial effects of the present invention are:

[0015] 1) For the beam string part, one end of the bracket is connected to the corbel, and the other end is connected to the second column top connector. The column at the top of the arc and the concrete corbel jointly bear the gravity of the beam string, which can reduce the number of columns, reduce the construction difficulty and cost;

[0016] 2) For the steel support part, the columns are arranged under the steel support and connected through the first column top connector, and are freely arranged without the need for overlapping with the long bracket (which is integrally arranged along the length direction of the steel support).

[0017] 3) The top plate of the column node is designed as an arc-shaped mounting hole, and the first and second column top connectors can be freely rotated and adjusted according to site conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the arrangement of the foundation pit steel support connection structure of the foundation pit string beam of the present invention in the foundation pit.

[0019] Figure 2 is a schematic diagram of the top plate.

[0020] Figure 3 It is a schematic diagram of the connection between the top plate and the first column top connecting piece.

[0021] Figure 4 It is a schematic diagram of the first column top connector connecting the steel support to the column.

[0022] Figure 5 It is a schematic diagram of the bracket embedded in the concrete corbel.

[0023] Figure 6It is a schematic diagram showing that the second column top connector is connected to the bracket and the bracket is embedded in the concrete corbel.

[0024] Figure 7 yes Figure 6 An enlarged view of the middle part of the .

[0025] Figure 8 is with Figure 7 Corresponding elevation view.

[0026] In the figure, 1. concrete corbel, 2. concrete purlin, 3. string beam, 4. steel support, 5. first column top connector, 6. column, 7. second column top connector, 8. top plate, 9. stiffening plate, 10. clamp, 11. bracket, 801. arc-shaped mounting hole. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] See also Figure 1-5 A foundation pit tension beam steel support connection structure, comprising a tension beam 3, a steel support 4, a concrete purlin 2, a concrete corbel 1, and a column 6. The steel tie rods at both ends of the tension beam are embedded and fixed in the concrete corbel 1. It also comprises a first column top connector 5, a bracket 11, and a second column top connector 7; both sides of the second column top connector 7 are respectively connected to a section of the bracket 11, and the other end of the bracket 11 is embedded and fixed in the concrete corbel 1; the lower part of the second column top connector 7 is supported by the column 6; the first column top connector 5 is a plurality of independent monomers, each of which is fixedly connected to a different position of the lower part of the steel support 4, and the lower part of each first column top connector 5 is supported by its own column 6.

[0029] In this embodiment, see Figure 1 The concrete corbel 1 also serves as a lateral force point for the steel support 4 .

[0030] The following is a further description of the usage of the second column top connection member 7 and the first column top connection member 5.

[0031] First, the fixing method of the second column top connecting member 7 is specifically described as follows:

[0032] Figure 1 The arrangement of the steel support and the beam string in the foundation pit is shown. At the arc top of the beam string 3, a second column top connector 7 is arranged. The structure of the second column top connector 7 is shown in FIG. Figure 5 The bracket 11 is in the shape of a cross, and the extended parts on both sides are respectively connected to a bracket 11, and the bracket 11 extends horizontally and is embedded and fixed in the concrete corbel 1.

[0033] The concrete corbel 1 is used to fix the steel tie rods on both sides of the beam string 3, which is equivalent to further effectively utilizing the existing concrete corbel 1. The concrete corbel 1 and the column 6 at the top of the beam string arc can jointly support the beam string, thereby reducing the number of columns, reducing the construction difficulty and construction cost.

[0034] In this embodiment, see Figure 2-3 , and further comprising a top plate 8, wherein the top plate 8 is fixedly connected to the top of the column 6, and a plurality of arc-shaped mounting holes 801 are provided on the top plate 8. Figure 2-8 The first column top connecting member 5 and the second column top connecting member 7 are respectively fixedly connected to the top plate 8 through the arc-shaped mounting hole 801 on the top plate 8.

[0035] In this embodiment, see Figure 5-7 The second column top connecting member 7 is in a cross shape, and the cross point constitutes the connection position with the column 6.

[0036] In this embodiment, see Figure 3-4 ,as well as Figure 7-8 A plurality of stiffening plates 9 are fixedly provided between the upper portion of the column 6 and the top plate 8 .

[0037] In this embodiment, see Figure 2 and Figure 7 The top plate 8 is circular, and the multiple arc-shaped mounting holes are cocentric with the top plate 8.

[0038] Second, the fixing method of the first column top connecting member 5 is specifically described as follows:

[0039] Combination Figure 1 and Figure 4 The first column top connection member 5 is in the shape of a plurality of independent short rods, which are fixed to the lower part of the steel support 4 by a clamp 10, and then supported by the column 6 through the top plate 8. It can be seen that the arrangement of the columns under the steel support in this embodiment is very free, and there is no need to overlap through a long bracket (which is integrally arranged along the length direction of the steel support).

[0040] In this embodiment, see Figure 4 , also includes a clamp 10, and the lower part of the steel support 4 is fixedly connected to the first column top connecting member 5 through the clamp 10.

[0041] In this embodiment, see Figure 4 , the first column top connecting member 5 and the steel support 4 are in a vertical state.

[0042] In summary, the purpose of the present invention is to provide a foundation pit tension beam steel support connection structure, in which a column top connector is provided, and the tension beam part is connected to the concrete corbel through one end of the bracket and the other end is connected to the column top connector, so that the need for multiple columns as fulcrums can be avoided, thereby reducing the number of columns; the steel truss support directly sets the column on the supporting ground, and adjusts the connection with the support in any direction through the column top connector, and each connection position is independent and freely arranged, and no long bracket is required for connection.

[0043] The above are preferred embodiments of the present invention. Those skilled in the art may also make respective changes or improvements thereon. Without departing from the general concept of the present invention, these changes or improvements shall fall within the scope of protection claimed by the present invention.

Claims

1. A foundation pit beam string steel support connection structure, comprising a beam string (3), a steel support (4), a concrete purlin (2), a concrete corbel (1), and a column (6), wherein steel tie rods at both ends of the beam string are embedded and fixed in the concrete corbel (1), and characterized in that: It also includes a first column top connecting piece (5), a bracket (11), and a second column top connecting piece (7); Both sides of the second column top connection member (7) are respectively connected to a section of the bracket (11), and the other end of the bracket (11) is embedded in and fixed in the concrete corbel (1); the bottom of the second column top connection member (7) is supported by the column (6); The first column top connecting member (5) is a plurality of independent monomers, each of which is fixedly connected to a different position of the lower part of the steel support (4), and the lower part of each first column top connecting member (5) is supported by a respective column (6); It also includes a top plate (8), the top plate (8) being fixedly connected to the top of the column (6), the top plate (8) being provided with a plurality of arc-shaped mounting holes, the first column top connecting member (5) and the second column top connecting member (7) being fixedly connected to the top plate (8) via the arc-shaped mounting holes; The second column top connecting member (7) is in the shape of a cross, and the cross point constitutes a connection position with the column (6); It also includes a clamp (10), and the lower part of the steel support (4) is fixedly connected to the first column top connecting member (5) through the clamp (10); The concrete corbel (1) also serves as a lateral support point for the steel support (4).

2. The foundation pit beam string steel support connection structure according to claim 1, characterized in that: A plurality of stiffening plates (9) are fixedly provided between the upper portion of the upright column (6) and the top plate (8).

3. The foundation pit beam string steel support connection structure according to claim 1, characterized in that: The top plate (8) is circular, and the plurality of arc-shaped mounting holes are cocentric with the top plate (8).

4. The foundation pit beam string steel support connection structure according to claim 1, characterized in that: The first column top connecting member (5) and the steel support (4) are in a vertical state.

Images