A soil nailing wall panel system for building foundation pits

Abstract

This utility model discloses a soil nailing wall panel system for building foundation pits, comprising several pits symmetrically distributed on the left side of a slope. Each pit has a concrete cavity filled with concrete. Multiple anchor cables are fixedly connected to the inner cavity of each concrete cavity. A centering bracket is fitted onto the surface of each anchor cable. A wire mesh is installed on the left side of the slope, extending through the surface of the anchor cables. A concrete foundation is provided at the top of the slope, with multiple longitudinal reinforcing bars embedded within the concrete foundation. Multiple horizontal stirrups are fitted onto the surface of each longitudinal reinforcing bar. This utility model reinforces and stabilizes the slope surface through anchor cables, vertical frame beams, and horizontal frame beams. The combined use of the concrete foundation, horizontal stirrups, and columns allows the top of the wire mesh to hang on the surface of the columns, thus fixing the wire mesh in place. Finally, concrete is poured.

Description

Technical Field

[0001] This utility model belongs to the field of building foundation pit technology, and in particular relates to a soil nailing wall panel system for building foundation pits. Background Technology

[0002] Soil nailing walls for foundation pits are composite support structures consisting of soil nails, shotcrete panels, and in-situ soil. During construction, holes are drilled in the slope of the excavated foundation pit, reinforced soil nails are inserted and grouted for anchoring, and then shotcrete is applied in layers to form the panels. This allows the soil nails and soil to work together, utilizing the reinforcement effect of the soil nails to improve the overall stability of the slope and resist lateral soil pressure. It is suitable for sites with low groundwater levels, such as cohesive soil and sandy soil. It features convenient construction and low cost, and is widely used in shallow to medium-deep foundation pit support. It requires the use of drainage measures and displacement monitoring to ensure safety during the excavation process.

[0003] In the construction of soil nailing walls for foundation pits, the fixing of wire mesh is crucial for panel construction. On slopes with limited operating space, the strength of binding connections is uneven. At the same time, due to the complex soil conditions and uneven slopes, it is difficult to fit the wire mesh to the slope and fix it firmly. Therefore, it is necessary to design a soil nailing wall panel system for building foundation pits. By hanging the wire mesh with columns, adapting to the slope, and using steel reinforcement components, the system can ensure the stable fit of the wire mesh, improve construction efficiency and connection strength, reduce material waste, lower costs, provide a good foundation for subsequent concrete spraying, and enhance the overall integrity of the panel and the stability of the slope. Utility Model Content

[0004] The purpose of this utility model is to provide a soil nailing wall panel system for building foundation pits, which has the advantages of connecting columns and wire mesh, adapting to slopes, utilizing steel reinforcement components to ensure stable wire mesh adhesion, improving construction efficiency and connection strength, reducing material waste, lowering costs, and providing a good foundation for subsequent concrete spraying, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A soil nailing wall panel system for building foundation pits includes several pits symmetrically distributed on the left side of the slope. The inner cavity of each pit is filled with a cement cavity. Multiple anchor bodies are fixedly connected to the inner cavity of the cement cavity. A centering bracket is fitted on the surface of the anchor body. A wire mesh is installed on the left side of the slope. The wire mesh extends to the surface of the anchor body. A concrete foundation is provided in the inner cavity of the top of the slope. Multiple longitudinal steel bars are embedded in the inner cavity of the concrete foundation. Multiple horizontal stirrups are fitted on the surface of the multiple longitudinal steel bars. The opposing sides of the multiple horizontal stirrups are fixed by tie bars. Each horizontal stirrup is welded to the longitudinal steel bars. Two symmetrical transverse steel bars are welded to the top of the multiple longitudinal steel bars. A column is installed through the top of the concrete foundation. The top of the wire mesh extends to the surface of the column.

[0006] Preferably, the left side of the slope is fixedly connected with multiple vertical frame beams by bolts.

[0007] Preferably, the surfaces of the plurality of vertical frame beams are fixedly connected to horizontal frame beams by bolts. Both the vertical and horizontal frame beams extend to the ends of the anchor cable body and are fixedly connected to the anchor cable body. The vertical and horizontal frame beams are attached to the wire mesh, and the end of the wire mesh away from the column is fixedly connected to the horizontal frame beam by bolts.

[0008] Preferably, a diagonal bracing bar is welded to the rear side of the transverse reinforcing bar on the front side, and a supporting reinforcing bar is welded to the side of the transverse reinforcing bar on the front side away from the diagonal bracing bar.

[0009] Preferably, two symmetrical connecting bars are welded to the front side of the rear transverse reinforcing bar, and the two connecting bars are welded to the diagonal bracing bars.

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

[0011] 1. This utility model reinforces and stabilizes the broken surface of the slope by using anchor cables, vertical frame beams, and horizontal frame beams. Through the combined use of concrete foundation, horizontal stirrups, and columns, the top of the wire mesh is hung on the surface of the columns, thereby fixing the wire mesh in position. Finally, concrete is poured, which achieves the purpose of connecting the columns and the wire mesh, adapting to the slope, and using the cooperation of steel reinforcement components to ensure the stable adhesion of the wire mesh, improving construction efficiency and connection strength, reducing material waste, lowering costs, and providing a good foundation for subsequent concrete spraying.

[0012] 2. This utility model uses vertical and horizontal grid beams in combination. The vertical and horizontal grid beams work together with the anchor cable body and the centering support to disperse the anchoring force, enhance the stability of the slope soil, suppress displacement deformation, reduce the risk of landslide, divide the slope surface to form a grid, stabilize the topsoil, reduce soil erosion, and also serve as a protective barrier.

[0013] 3. By setting up connecting steel bars, the connecting steel bars, as key load-bearing components, can construct stable transverse steel bars, optimize the load transfer path, and efficiently distribute the upper load to the concrete foundation, thereby enhancing the shear and bending resistance of the foundation, avoiding stress concentration that could lead to foundation cracking, standardizing the arrangement of steel bars during construction, restraining concrete disturbance, and ensuring molding accuracy. Attached Figure Description

[0014] 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.

[0015] Figure 1This is a front view schematic diagram of one embodiment of the present utility model;

[0016] Figure 2 This is a side view of one embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional schematic diagram of the vertical and horizontal grid beams according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the internal cavity of a concrete foundation according to an embodiment of the present invention.

[0019] Figure 5 This is one embodiment of the present utility model. Figure 3 A magnified view of point A in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Slope, 2. Pit, 3. Cement cavity, 4. Anchor cable, 5. Centering support, 6. Vertical frame beam, 7. Horizontal frame beam, 8. Wire mesh, 9. Concrete foundation, 10. Longitudinal reinforcement, 11. Horizontal stirrups, 12. Transverse reinforcement, 13. Diagonal bracing reinforcement, 14. Supporting reinforcement, 15. Column, 16. Connecting reinforcement. Detailed Implementation

[0022] In the following description, an embodiment of the soil nailing wall panel system for building foundation pits according to the present invention will be described with reference to the accompanying drawings.

[0023] Figure 1-5This invention illustrates a soil nailing wall panel system for a building foundation pit, comprising a plurality of pits 2 symmetrically distributed on the left side of a slope 1. Each pit 2 has a concrete cavity 3 poured into its interior. A plurality of anchor cables 4 are fixedly connected to the interior of each concrete cavity 3. A centering bracket 5 is fitted onto the surface of each anchor cable 4. A plurality of vertical frame beams 6 are bolted to the left side of the slope 1. Horizontal frame beams 7 are bolted to the surfaces of the vertical frame beams 6. Both the vertical and horizontal frame beams 6 extend to the ends of the anchor cables 4 and are fixedly connected to them. The grid beam 6 and the horizontal grid beam 7 are attached to the wire mesh 8. The end of the wire mesh 8 away from the column 15 is fixedly connected to the horizontal grid beam 7 by bolts. Through the combined use of the vertical grid beam 6 and the horizontal grid beam 7, and in conjunction with the anchor cable body 4 and the centering bracket 5, the anchoring force is dispersed, enhancing the stability of the slope 1 soil, suppressing displacement deformation, reducing the risk of landslides, dividing the slope 1 surface to form a grid structure, which can stabilize the topsoil, reduce soil erosion, and also act as a protective barrier. The wire mesh 8 is installed on the left side of the slope 1, extending through the surface of the anchor cable body 4. The top of the slope 1 The inner cavity is provided with a concrete foundation 9, and multiple longitudinal steel bars 10 are embedded in the inner cavity of the concrete foundation 9. Multiple horizontal stirrups 11 are sleeved on the surface of the multiple longitudinal steel bars 10. The opposing sides of the multiple horizontal stirrups 11 are fixed by tie bars. Each horizontal stirrup 11 is welded to the longitudinal steel bars 10. Two symmetrical transverse steel bars 12 are welded to the top of the multiple longitudinal steel bars 10. A diagonal bracing steel bar 13 is welded to the rear side of the front transverse steel bar 12. A supporting steel bar 14 is welded to the side of the front transverse steel bar 12 away from the diagonal bracing steel bar 13. The top of the concrete foundation 9 A column 15 is installed through the steel wire mesh 8, which extends to the surface of the column 15. Two symmetrical connecting steel bars 16 are welded to the front of the rear transverse steel bar 12. The two connecting steel bars 16 are welded to the diagonal bracing steel bars 13. Through the setting of the connecting steel bars 16, the connecting steel bars 16, as key load-bearing components, can construct a stable transverse steel bar 12, optimize the load transfer path, and efficiently distribute the upper load to the concrete foundation 9, enhance the shear and bending resistance of the foundation, avoid stress concentration that causes foundation cracking, standardize the steel bar arrangement during construction, restrain concrete disturbance, and ensure molding accuracy.

[0024] Working Principle: When using this invention, firstly, symmetrical pits 2 are excavated on the left side of slope 1 according to the design. A cement cavity 3 is poured inside the pit, and anchor cables 4 are installed inside. A central support 5 keeps the anchor cables 4 centered within the borehole, ensuring uniform thickness of the cement grout around the anchor cables 4 and preventing direct contact between the anchor cables 4 and the cement cavity 3, thus completing the anchoring preparation. Next, a wire mesh 8 is installed, passing through the anchor cables 4 for initial fixation. Then, a concrete foundation 9 is constructed at the top of slope 1, with longitudinal reinforcing bars 10 inserted and horizontal stirrups 11 fitted. These are fixed by tie bars and welded together to form a reinforcing steel skeleton. Transverse reinforcing bars 12 are welded to the top to enhance stability. Qualitatively, columns 15 are installed at the top of the foundation, and the top of the wire mesh 8 is hung and fixed on the columns 15. In addition, vertical frame beams 6 and horizontal frame beams 7 are installed with bolts to connect them to the anchor cable body 4. At the same time, diagonal bracing steel bars 13, supporting steel bars 14 and connecting steel bars 16 are welded to the horizontal steel bars 12 for auxiliary reinforcement. Finally, concrete is poured to make the entire system a whole, enhance the stability of the panel and slope, realize the connection between the columns and the wire mesh, adapt to the slope, and use the synergy of steel components to ensure the stable fit of the wire mesh, improve construction efficiency and connection strength, reduce material waste, reduce costs, and provide a good foundation for subsequent concrete spraying.

[0025] In summary, this foundation pit soil nailing wall panel system reinforces and stabilizes the broken surface of the slope 1 through anchor cables 4, vertical frame beams 6, and horizontal frame beams 7. The combined use of concrete foundation 9, horizontal stirrups 11, and columns 15 allows the top of the wire mesh 8 to be hung on the surface of the columns 15, thus fixing the wire mesh 8 in place. Finally, concrete is poured, achieving the goal of connecting the columns and wire mesh, adapting to the slope, utilizing the synergy of reinforcing steel components to ensure stable wire mesh adhesion, improving construction efficiency and connection strength, reducing material waste, lowering costs, and providing a good foundation for subsequent concrete spraying.

Claims

1. A building excavation soil nailing wall panel system characterized by, The slope (1) includes several pits (2) symmetrically distributed on the left side of the slope. Each pit (2) has a concrete cavity (3) inside. Multiple anchor cables (4) are fixedly connected to the inner cavity of each concrete cavity (3). A centering bracket (5) is fitted onto the surface of each anchor cable (4). A wire mesh (8) is installed on the left side of the slope (1), extending through to the surface of each anchor cable (4). A concrete foundation (9) is provided at the top of the slope (1). The cavity is implanted with multiple longitudinal steel bars (10), and multiple horizontal stirrups (11) are sleeved on the surface of the multiple longitudinal steel bars (10). The opposing sides of the multiple horizontal stirrups (11) are fixed by tie bars. The horizontal stirrups (11) are welded to the longitudinal steel bars (10). Two symmetrical transverse steel bars (12) are welded to the top of the multiple longitudinal steel bars (10). A column (15) is installed through the top of the concrete foundation (9), and the top of the wire mesh (8) extends to the surface of the column (15).

2. The building excavation soil nailing wall panel system according to claim 1, wherein, The left side of the slope (1) is fixedly connected with multiple vertical frame beams (6) by bolts.

3. The building excavation soil nailing wall panel system according to claim 2, wherein, The surfaces of multiple vertical frame beams (6) are fixedly connected to horizontal frame beams (7) by bolts. Both the vertical frame beams (6) and the horizontal frame beams (7) extend to the ends of the anchor cable body (4) and are fixedly connected to the anchor cable body (4). The vertical frame beams (6) and the horizontal frame beams (7) are attached to the wire mesh (8). The end of the wire mesh (8) away from the column (15) is fixedly connected to the horizontal frame beams (7) by bolts.

4. The building excavation soil nailing wall panel system according to claim 3, wherein, A diagonal bracing steel bar (13) is welded to the rear side of the transverse steel bar (12) on the front side, and a supporting steel bar (14) is welded to the side of the transverse steel bar (12) on the front side away from the diagonal bracing steel bar (13).

5. The building excavation soil nailing wall panel system according to claim 4, wherein, Two symmetrical connecting bars (16) are welded to the front side of the rear transverse reinforcing bar (12), and the two connecting bars (16) are welded to the diagonal bracing bar (13).

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