Supporting steel bar and latticed column connecting and assembling structure in deep foundation pit supporting construction

Abstract

The utility model relates to a supporting steel bar and latticed column connecting assembly structure in deep foundation pit supporting construction, a latticed column comprises angle steel and batten plates, the angle steel is distributed at four corners, adjacent angle steel is connected together through the batten plates, and the connecting assembly structure comprises an inner positioning plate, an outer positioning plate and connecting bolts. The inner positioning plate is clamped on the inner side between the angle steel in a matched mode, the outer positioning plate is located on the outer side of the angle steel, the inner positioning plate and the outer positioning plate are provided with corresponding connecting holes and positioning holes, the connecting bolts are fixedly arranged in the connecting holes in a matched and matched mode, and the inner positioning plate and the outer positioning plate are combined and fixed to the two opposite sides of the latticed column. The positioning holes are used for allowing the supporting steel bars to penetrate through in a positioning mode. The two positioning plates are fixed through the connecting bolts, a fixing foundation is provided for the structure through clamping and fixing, the structure is prevented from moving up and down and inside and outside, the inner positioning plate is clamped in the latticed column in a matched mode, the inner positioning plate is prevented from swinging left and right, a steel bar in the middle is bent to pass through the positioning holes, and it is ensured that the position of the steel bar is determined.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a connecting and assembling structure of supporting steel bars and lattice columns in deep foundation pit support construction. Background Art

[0002] In construction, especially in the construction of high-rise buildings or large underground space structures, deep foundation pit excavation is often encountered. In order to ensure the stability of the foundation pit, prevent slope collapse and damage to the surrounding environment, an internal support structure is usually used to withstand the horizontal soil pressure and water pressure on the side walls of the foundation pit. The design and installation of the internal support structure is one of the key links in deep foundation pit construction.

[0003] The internal support structure usually consists of a vertical support structure and a horizontal support structure. The vertical support structure, such as the lattice steel column, is mainly used to bear the vertical load from above and transfer it to the bottom of the foundation pit or the surrounding support structure. The horizontal support structure, such as the internal support beam of the reinforced concrete structure, is mainly used to resist the horizontal pressure from the side wall to ensure the overall stability of the foundation pit. In the design and construction process of the internal support beam, the arrangement and connection of the steel bars are crucial. Since the internal support beam needs to withstand large horizontal forces, its steel bars are usually arranged densely to ensure sufficient bearing capacity and stiffness. However, when the internal support beam intersects with the lattice steel column, the arrangement and connection of the steel bars will face some challenges.

[0004] In the prior art, such as the utility model patent with patent number 202020105226.9, which discloses a structure in which the support beam reinforcement and the lattice steel column in a deep foundation pit are connected by a connecting steel plate, which includes a lattice steel column and an inner support beam reinforcement; the lattice steel column has 4 angle steels and a plurality of tie plates; the support beam reinforcement includes multiple ones and is cross-connected with the lattice steel column, in particular, a connecting steel plate is provided on the outer wall of the tie plate at the cross-connection between the support beam reinforcement and the lattice steel column, and the connecting steel plate has multiple connecting ribs, and the outer wall at the end of the connecting rib has a connecting thread; the support beam reinforcement is symmetrically distributed on both sides of the lattice steel column, and the outer wall thereof close to one end of the lattice steel column has an outer wall thread and is connected to a steel sleeve, and the inner wall of the steel sleeve has a thread; the end of the connecting rib is threadedly connected to the steel sleeve, so that the support beam reinforcement and the lattice steel column are cross-connected through the steel sleeve and the connecting steel plate in turn.

[0005] This structure is complex to assemble. It is necessary to weld support steel plates on the gusset plates and use the support steel plates as the connection basis for the steel bars. The construction process is complicated and adds extra construction steps, which increases the construction time and cost. At the same time, the welding operation needs to be carried out on site. There are many uncontrollable factors in welding itself, such as welding temperature, welding speed, welding materials, etc., which will affect the welding quality, thereby increasing the difficulty of construction quality control. Based on this, it is necessary to study a connection assembly structure between support steel bars and lattice columns in deep foundation pit support construction. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a support steel bar and lattice column connection assembly structure in deep foundation pit support construction, which effectively solves the problems of great construction difficulty, low construction efficiency and poor construction efficiency in the existing lattice column and support steel bar interaction structure.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a connection assembly structure between supporting steel bars and lattice columns in deep foundation pit support construction, the lattice columns include angle steels and tie plates, the angle steels are distributed at four corners, and adjacent angle steels are connected together by tie plates, and also include a connection assembly structure, including an inner positioning plate, an outer positioning plate and connecting bolts; the inner positioning plate is adapted to be mounted on the inner side between the angle steels, and the outer positioning plate is located on the outer side of the angle steels, and corresponding connecting holes and positioning holes are provided on the inner positioning plate and the outer positioning plate, and the connecting bolts are adapted to be assembled and fixed in the connecting holes, and the inner positioning plate and the outer positioning plate are combined and fixed on two opposite sides of the lattice column, and the positioning holes are used to allow the supporting steel bars to pass through in a positioned manner.

[0008] Furthermore, a plurality of positioning holes are arranged in parallel, and the connecting holes are arranged outside the positioning holes.

[0009] Furthermore, a guide plate is fixed on the outer positioning plate through a connecting rod, and a guide hole is provided on the guide plate, and the supporting steel bar is guided to the positioning hole under the guiding effect of the guide hole.

[0010] Furthermore, a connecting seat is provided at the end of the connecting rod, a screw head is provided on the connecting seat, and the guide plate is seated on the connecting seat and is fastened to the screw head by a nut.

[0011] Furthermore, a connector is provided on the outer side of the outer positioning plate.

[0012] The beneficial effect of the above technical solution is: the utility model adopts a clamping and positioning card-installation method in the structure to form a foundation for supporting steel bars on the lattice column. The foundation takes the inner positioning plate and the outer positioning plate as the main structure, and the two structures are fixed by connecting bolts. The clamping fixation is used as the foundation to provide anchoring force to prevent it from moving up and down and in and out. During configuration, the inner positioning plate is adapted and card-installed in the lattice column to prevent it from swinging left and right, thereby having a better stabilizing effect. The inner positioning plate provides a positioning hole, allowing the steel bars in the middle to pass through the positioning hole by bending, thereby ensuring that the position of the steel bars is determined.

[0013] At the same time, the utility model is provided with a guide plate on the outside of the outer positioning plate, and the guide plate and the outer positioning plate are connected by bent steel bars, while the area outside the guide plate is straight steel bars, so that the force can be guided to the guide plate and combined with the structure of the steel bars themselves to ensure the supporting strength of the steel bars.

[0014] Structurally, the utility model allows the steel bars in the middle area to pass through the middle area of ​​the lattice column by means of bending and positioning holes, while the steel bars on the sides can be directly fixed and connected to the connecting heads of the outer positioning plates to avoid excessive bending of the steel bars and provide positioning for the steel bars through limited welding points.

[0015] Therefore, the utility model bends the steel bars facing the middle area of ​​the lattice column, and through positioning and guiding, the steel bars are allowed to pass smoothly through the lattice column. It is more difficult to bend the steel bars on the outside, but the number is small and they are located on the outside, which is convenient for construction. The utility model adopts a direct fixing method and is equipped with a connecting head; thereby, through the two operating methods, large-area welding can be avoided, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the implementation structure of the utility model;

[0017] Figure 2 Schematic diagram of the implementation structure of the guide plate;

[0018] Figure 3 This is a schematic diagram of the elevation structure of the implementation of the utility model;

[0019] Figure 4 It is a schematic diagram of the implementation structure of the external positioning plate.

[0020] Figure markings: 1-angle steel, 2-attachment plate, 3-inner positioning plate, 4-outer positioning plate, 5-connecting bolt, 6-connecting rod, 7-screw head, 8-guide plate, 9-middle steel bar, 10-outer steel bar, 11-positioning hole, 12-connecting hole, 13-connecting head. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0022] Embodiment 1, this embodiment aims to provide a support steel bar and lattice column connection assembly structure in deep foundation pit support construction, which is mainly used for the interactive connection part of the lattice column and the support steel bar in the deep foundation pit support. In view of the problems of great construction difficulty, low construction efficiency and poor construction efficiency in the existing interactive structure of lattice columns and support steel bars, this embodiment provides a support steel bar and lattice column connection assembly structure in deep foundation pit support construction.

[0023] like Figure 1 As shown in the figure, a supporting steel bar and lattice column connection assembly structure in deep foundation pit support construction, the lattice column includes angle steel 1 and tie plates 2, the angle steel 1 is distributed at four corners, and adjacent angle steels 1 are connected together by tie plates 2. Structurally, the structure is a prior art, and the tie plates 2 are arranged at intervals on the four sides of the angle steel, and space is reserved between the tie plates.

[0024] In order to achieve the connection between the supporting steel bars and the lattice columns, the feature of this embodiment is to allow the steel bars to pass through the position of the avoidance plate. Based on this, this embodiment provides a connection assembly structure, and the specific structure includes an inner positioning plate 3, an outer positioning plate 4 and a connecting bolt 5; the inner positioning plate 3 is adapted to be clamped on the inner side between the angle steels 1, and this clamping structure can prevent the inner positioning plate 3 from shifting left and right, and the outer positioning plate 4 is on the outer side of the angle steel 1. The inner positioning plate 3 and the outer positioning plate 4 are provided with corresponding connection holes 12 and positioning holes 11, and the connecting bolt 5 is adapted to be assembled and fixed in the connection hole 12. This embodiment simplifies the connection assembly process between the supporting steel bars and the lattice columns by using a combination of the inner positioning plate 3 and the outer positioning plate 4 and fixing them with the connecting bolt 5. This design avoids the complicated welding process, improves construction efficiency, and reduces construction costs

[0025] The inner positioning plate 3 and the outer positioning plate 4 are combined and fixed on two opposite sides of the lattice column, and the positioning holes 11 are used for positioning and passing the supporting steel bars.

[0026] like Figure 3-4 As shown in the figure, a plurality of positioning holes 11 are arranged in parallel, and the connecting holes 12 are arranged outside the positioning holes 11. There are 5 positioning holes and 4 connecting holes, and both the connecting holes and the positioning holes are in the gaps of the angle steels, so that the steel bars can pass through the lattice columns through the positioning holes; the positioning holes 11 on the inner positioning plate 3 and the outer positioning plate 4 are used to support the positioning and passing of the steel bars, ensuring the precise connection between the steel bars and the lattice columns. This design reduces the error of human operation and improves the construction quality.

[0027] In this embodiment, the steel bars are bent through the lattice columns, and corresponding positioning holes 11 are arranged on the inner positioning plates 3 and the outer positioning plates 4; the connection strength between the supporting steel bars and the lattice columns is enhanced by the combined fixation of the inner positioning plates 3 and the outer positioning plates 4, thereby improving the stability of the overall structure. This design can effectively prevent the collapse and deformation of the foundation pit slope and ensure construction safety. A detachable bolt connection method is adopted between the inner positioning plate and the outer positioning plate, and the connection between the supporting steel bars and the lattice columns can be easily disassembled and reinstalled, which facilitates the later inspection and maintenance of the supporting structure, reduces maintenance costs, and extends the service life of the structure. Through this structure, there is basically no loss to the original lattice columns, ensuring the stability and integrity of the original structure of the lattice columns.

[0028] Embodiment 2: Based on Embodiment 1, this embodiment provides a corresponding solution to the situation where there are many steel bars and it is difficult for the outer steel bars to enter the positioning holes by bending.

[0029] like Figure 2 As shown in the further implementation structure, in order to ensure the stability of the structure, in this embodiment, a guide plate 8 is fixed to the outer positioning plate 4 through a connecting rod 6, and a guide hole is provided on the guide plate 8. The supporting steel bar is guided to the positioning hole 11 under the guiding action of the guide hole.

[0030] A connecting seat is provided at the end of the connecting rod 6, and a screw head 7 is provided on the connecting seat. The guide plate 8 is located on the connecting seat and is fastened to the screw head 7 by a nut. Through this structure, the guide plate 8 can be detachably installed. During implementation, the steel bars can be set as described in the patent disclosure described in the background technology, and the steel bars are connected by connecting screw sleeves to avoid the steel bars being too long, that is, the guide plate 8 is assembled from the end of the straight steel bar end, and the bent section is between the guide plate 8 and the outer positioning plate 4; a connecting head is provided on the outer side of the outer positioning plate 4, and a guide hole corresponding to the connecting head is provided on the guide plate 8, and the steel bar can pass directly through the guide hole and be connected to the connecting head 14. The specific connection method is welding. During implementation, the connecting head 13 is a sleeve structure, and the steel bar can be inserted into it and fixed by welding.

[0031] The guide plate 8 fixed on the outer positioning plate 4 by the connecting rod 6 provides a guiding function for the supporting steel bars, so that the steel bars can be accurately and quickly guided to the positioning holes 11, thereby improving the construction efficiency and reducing the construction time.

[0032] This embodiment classifies the steel bars. Figure 2As shown in the figure, the steel bars are divided into middle steel bars 9 and outer steel bars 10. The middle steel bars 9 are opposite to the middle area of ​​the lattice column. This part of the steel bars is bent, and through positioning and guiding, the steel bars are smoothly passed through the lattice column. For the outer steel bars 10, this part of the steel bars is difficult to bend, but the number is small and it is located on the outside, which is convenient for construction. This embodiment adopts a direct fixing method and is equipped with a connector 13.

[0033] The implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. The basic concept of the utility model is to form a foundation for supporting steel bars on the lattice column by means of clamping and positioning clamping. The foundation is based on the inner positioning plate and the outer positioning plate as the main structure, and the two structures are fixed by connecting bolts. The clamping fixation is used as the foundation to provide anchoring force to prevent it from moving up and down and inside and outside. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A supporting steel bar and lattice column connection assembly structure in deep foundation pit support construction, the lattice column includes angle steel and tie plates, the angle steels are distributed at four corners, and adjacent angle steels are connected together by tie plates, characterized in that: It also includes a connecting assembly structure, including an inner positioning plate, an outer positioning plate and connecting bolts; the inner positioning plate is adapted to be clamped on the inner side between the angle steels, and the outer positioning plate is located on the outer side of the angle steels. The inner positioning plate and the outer positioning plate are provided with corresponding connecting holes and positioning holes. The connecting bolts are adapted to be assembled and fixed in the connecting holes, and the inner positioning plate and the outer positioning plate are combined and fixed on two opposite sides of the lattice column. The positioning holes are used to allow the supporting steel bars to pass through.

2. The connecting and assembling structure of supporting steel bars and lattice columns in deep foundation pit support construction according to claim 1 is characterized in that: A plurality of positioning holes are arranged in parallel, and the connecting holes are arranged outside the positioning holes.

3. The supporting steel bar and lattice column connection assembly structure in deep foundation pit support construction according to claim 1 is characterized in that: A guide plate is fixed on the outer positioning plate through a connecting rod, and a guide hole is arranged on the guide plate. The supporting steel bar is guided to the positioning hole under the guidance of the guide hole.

4. The assembly structure for connecting supporting steel bars and lattice columns in deep foundation pit support construction according to claim 3 is characterized in that: A connecting seat is arranged at the end of the connecting rod, a screw head is arranged on the connecting seat, and the guide plate is seated on the connecting seat and is fastened on the screw head through a nut.

5. The assembly structure for connecting supporting steel bars and lattice columns in deep foundation pit support construction according to claim 4, characterized in that: A connector is arranged on the outer side of the outer positioning plate.

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