Building foundation pit supporting structure

Abstract

The utility model relates to the technical field of foundation pit supporting, in particular to a building foundation pit supporting structure which comprises a base frame, a supporting frame is assembled and connected to the outer side of the base frame, a drainage groove is formed in the base frame, a plurality of reinforcing blocks are fixedly connected to the supporting frame, and ground anchors are jacked into the supporting frame through the reinforcing blocks. The drainage groove is formed in the base frame, when water is accumulated in the foundation pit, the accumulated water can enter the drainage groove to flow, the water pumping pipe is inserted into the water pumping opening, sewage accumulated in the drainage groove and even in the foundation pit can be rapidly pumped, the drainage groove can conveniently guide and concentrate the accumulated water in the foundation pit, and the drainage effect is good. The cleaning efficiency of sewage in the foundation pit is improved, the situation that accumulated water below the foundation pit supporting structure is inconvenient to clean is avoided, the anchor rod of the supporting frame is inserted in the direction of the assembling groove and fixedly connected with the soil layer at the bottom of the foundation pit, the base frame and the supporting frame are preliminarily assembled and fixed, and the stability and safety of the foundation pit are improved.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, and in particular to a building foundation pit support structure. Background Technology

[0002] An excavation pit is a pit dug at the designed foundation location according to the base elevation and foundation dimensions. It provides the necessary space for the construction of the building's foundation. Within this space, construction workers can carry out foundation masonry, rebar tying, concrete pouring, and other operations, ensuring that the building's foundation is constructed according to design requirements. When the building's foundation is not stable enough, or the surrounding terrain is complex, the excavation pit can support the surrounding structure to prevent it from collapsing or tilting inward. This supporting function is crucial for ensuring the stability and safety of the building, especially when constructing high-rise buildings, large underground facilities, or undertaking urban redevelopment projects, where the supporting role of the excavation pit becomes even more prominent.

[0003] The use of support structures in foundation pits effectively supports the pit sidewalls, preventing soil instability and collapse. During foundation pit excavation, the pit sidewalls may experience significant lateral pressure due to the soil's own weight and external loads. Without the support of a support structure, the soil is prone to instability and collapse. Support structures provide necessary support, ensuring the stability and safety of the pit sidewalls and limiting their deformation and displacement, thereby protecting surrounding buildings, underground pipelines, roads, and other facilities. Significant soil deformation and displacement during excavation can damage nearby buildings and underground pipelines. Support structures, by controlling the deformation and displacement of the pit sidewalls, ensure the stability and safety of the surrounding environment.

[0004] A building foundation pit support structure disclosed in Chinese patent document CN212742565U includes a foundation pit to be excavated. Multiple support piles are fixedly installed around the outer edge of the foundation pit, and multiple anchor piles are fixedly installed on the outer side of the support piles. A capping beam is fixedly connected to the upper end of each support pile, and adjacent capping beams are interconnected. Tie bars are fixedly connected to the side of each anchor pile closest to the center of the foundation pit to be excavated, and the other end of each tie bar is fixedly connected to the side wall of the opposite capping beam. After excavation, the foundation pit to be excavated forms an excavated foundation pit. A retaining wall is fixedly installed on the side wall of the excavated foundation pit. The retaining wall includes a wire mesh and shotcrete. The wire mesh is fixedly connected to the side wall of the excavated foundation pit, and the shotcrete is fixedly sprayed onto the outer side of the wire mesh. This utility model discloses a building foundation pit support structure. The structure uses a combination of support piles and anchor piles to make construction easier, shorter, and more effective. However, the use of anchor piles and support piles to form a support structure results in a large footprint around the foundation and affects the arrangement of related facilities at the edge of the foundation pit.

[0005] The existing foundation pit support structure is located at the edge of the foundation pit, resulting in a complex structure at the edge of the foundation pit. The water accumulated under the support structure is inconvenient to clean, which affects the overall stability of the foundation pit structure and the durability of its support effect.

[0006] To address the shortcomings of the existing technologies, providing a support structure for building foundation pits is a problem worthy of study. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a building foundation pit support structure, which effectively solves the deficiencies of the prior art.

[0008] The purpose of this utility model is achieved through the following technical solution: a building foundation pit support structure, including a base frame, a support frame is assembled and connected to the outside of the base frame, a drainage groove is opened inside the base frame, a number of reinforcing blocks are fixedly connected to the support frame, and the support frame is pushed into the anchor nails through the reinforcing blocks.

[0009] The base frame is located at the edge of the bottom of the pit, and the direction of the drainage ditch is adapted to the direction of the base frame. The top of each of the four corners of the drainage ditch is provided with a water inlet.

[0010] When water accumulates inside the foundation pit, the water can flow into the drainage ditch. By inserting a pumping pipe at the pumping point, the sewage accumulated in the drainage ditch and even the foundation pit can be quickly pumped out. The drainage ditch can conveniently guide and concentrate the water in the foundation pit.

[0011] The drainage trough has an inlet on its inner side. The bottom of the inlet has small slots that are evenly distributed. The bottom height of the small slots is the same as the bottom height of the drainage trough. A barrier net is fixedly connected to the top of the inlet, and the shape of the barrier net is adapted to the shape of the inlet.

[0012] Water in the foundation pit can enter the drainage ditch through a small opening. The drainage ditch guides and concentrates the water, accelerating the drainage efficiency of the foundation pit. The barrier net can prevent garbage and mud in the water from entering the drainage ditch and causing blockage. When a certain amount of garbage accumulates in the drainage ditch, the bottom of the barrier net can be pressed inward to open the water inlet and clean the accumulated garbage inside.

[0013] The outer side of the base frame is provided with several assembly slots. The inclination angle of the assembly slots is adapted to the inclination angle of the side wall of the pit. The bottom of the support frame is fixedly connected to several anchor rods. The diameter and spacing of the assembly slots are adapted to the diameter and spacing of the anchor rods. The width of the support frame is adapted to the width of the base frame. The support frame is fixedly connected to the base frame through the cooperation of the assembly slots and anchor rods.

[0014] After the base frame is pre-embedded at the bottom edge of the pit, the anchor rods of the support frame are inserted along the assembly groove and fixedly connected to the soil layer at the bottom of the pit. The base frame and support frame are initially assembled and fixed, and the support frame is set at the edge of the pit to support and protect the side wall of the pit, thereby improving the stability and safety of the pit.

[0015] An anchor hole is provided in the middle of the reinforcement block. The anchor passes through the anchor hole of the reinforcement block and is fixedly connected to the side wall of the foundation pit. The top of the reinforcement block is horizontal.

[0016] When assembling the support frame into the mounting slot of the base frame, the top surface of the reinforcing block can be tapped to drive the anchor rods at the bottom of the support frame into the soil. This avoids the inconvenience of applying force to the anchor rods and driving them into the soil during the installation of the support frame. After the installation of the base frame and the support frame is completed, the anchor nails can be driven into the soil layer of the pit sidewall to further reinforce the support frame. Furthermore, some or all of the reinforcing blocks can be selected for anchor nail reinforcement as needed to improve the overall stability of the support structure.

[0017] An annular groove is formed on the outer side of the middle part of the anchor. Several spring plates are fixedly connected inside the annular groove. The spring plates are made of alloy spring steel. The thickness of the spring plates is adapted to the depth of the annular groove. One end of the spring plate opens towards the rear end of the anchor.

[0018] When the anchor is driven into the anchor hole of the reinforcement block, the spring plate can retract into the annular groove, allowing the anchor to pass smoothly through the anchor hole of the reinforcement block and be driven into the soil. After being driven into the soil, the spring plate automatically opens under its own elastic force, which can further grip the soil, improve the biting force on the soil, and improve the overall stability of the support frame.

[0019] The support frame is grid-shaped, and the reinforcing block is equipped with a fixing hook. The support frame is fitted with a protective net through the fixing hook.

[0020] After the installation of the support structure is completed, the protective netting is wrapped and fixed to the inside of the support frame using fixing hooks to further protect and limit the soil on the side wall of the foundation pit, thereby improving the support effect of the support structure on the soil of the side wall of the foundation pit.

[0021] Positive and beneficial effects: 1. The building foundation pit support structure allows for the rapid extraction of sewage accumulated in the drainage ditch and even the foundation pit by inserting a water pump at the water inlet. The drainage ditch can conveniently guide and concentrate the water in the foundation pit, improving the efficiency of sewage cleaning and avoiding the situation where water accumulation below the foundation pit support structure is inconvenient to clean. The barrier net can prevent garbage and mud in the water from entering the drainage ditch and causing blockage. When a certain amount of garbage accumulates in the drainage ditch, the bottom of the barrier net can be pressed inward to open the water inlet and clean the accumulated garbage inside.

[0022] 2. In this foundation pit support structure, after the base frame is pre-embedded at the bottom edge of the foundation pit, the anchor rods of the support frame are inserted along the assembly groove direction and fixedly connected to the soil layer at the bottom of the foundation pit. The base frame and support frame are initially assembled and fixed, and the support frame is set at the edge of the foundation pit to support and protect the side wall of the foundation pit, thereby improving the stability and safety of the foundation pit. After the installation of the base frame and support frame is completed, anchor nails can be driven into the soil layer of the side wall of the foundation pit to further reinforce the support frame. As needed, some or all of the reinforcement blocks can be selected for anchor nail reinforcement to improve the overall stability of the support structure.

[0023] 3. In this foundation pit support structure, when the anchor bolts are driven into the anchor bolt holes of the reinforcement block, the spring plate can retract into the annular groove, allowing the anchor bolts to pass smoothly through the anchor bolt holes of the reinforcement block and be driven into the soil layer. After being driven into the soil layer, the spring plate automatically opens under its own elastic force, which can further grip the soil layer, improve the biting force on the soil layer, and improve the overall stability of the support frame. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a top view of the structure of this utility model;

[0027] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B;

[0029] Figure 6 This utility model Figure 4 Enlarged structural diagram at point C;

[0030] Figure 7 This is a schematic diagram of the structure of the base of this utility model;

[0031] Figure 8 This utility model Figure 7 A magnified structural diagram at point D.

[0032] In the diagram: 1-base frame, 2-support frame, 3-drainage trough, 4-reinforcing block, 5-anchor nail, 6-water inlet, 7-water inlet, 8-barrier net, 9-assembly groove, 10-anchor rod, 11-annular groove, 12-spring plate. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] Example 1

[0035] like Figures 1 to 8 As shown, a building foundation pit support structure includes a base frame 1, a support frame 2 is assembled and connected to the outside of the base frame 1, a drainage groove 3 is opened inside the base frame 1, and a number of reinforcing blocks 4 are fixedly connected to the support frame 2. The support frame 2 is pushed into the anchor nails 5 through the reinforcing blocks 4.

[0036] like Figures 1 to 8As shown, the base frame 1 is set at the edge of the bottom of the foundation pit, and the direction of the drainage ditch 3 is adapted to the direction of the base frame 1. The top of each of the four corners of the drainage ditch 3 is provided with a water inlet 6. By setting the drainage ditch 3 inside the base frame 1, when water accumulates inside the foundation pit, the water can flow into the interior of the drainage ditch 3. By inserting a water pipe at the water inlet 6, the sewage accumulated in the drainage ditch 3 and even the foundation pit can be quickly pumped out. The drainage ditch 3 can conveniently guide and concentrate the water in the foundation pit, improve the cleaning efficiency of sewage in the foundation pit, and avoid the situation where water accumulation below the foundation pit support structure is inconvenient to clean.

[0037] The outside of the water inlet 6 is provided with external threads. When the water inlet 6 is not in use, the threaded end cap is used to seal the water inlet 6 to prevent soil and other objects from entering the water inlet 6 and clogging it, which would affect the subsequent connection of the water pump. The water pump is connected to the water pump and can quickly pump out the water below the water inlet.

[0038] The bottom of the four corners of the drainage trough 3 is lower than the other positions, so that the water entering the drainage trough 3 can flow along the slope of the four corners of the drainage trough 3 where the drain outlet 6 is set, so that the water pump connected to the water pump can fully and quickly pump out the water in the drainage trough 3.

[0039] like Figures 3 to 5 As shown, an inlet 7 is provided on the inner side of the drainage ditch 3. Small slots are provided at equal intervals at the bottom of the inlet 7. The bottom height of the small slots is equal to the bottom height of the drainage ditch 3. A barrier net 8 is fixedly connected to the top of the inlet 7. The shape of the barrier net 8 is adapted to the shape of the inlet 7. By setting the inlet 7 and small slots on the inner side of the drainage ditch 3, the water in the foundation pit can enter the drainage ditch 3 through the small slots. The drainage ditch 3 guides and concentrates the water entering the pit, thus accelerating the drainage efficiency of the foundation pit. The barrier net 8 can prevent garbage and mud in the water from entering the drainage ditch 3 and causing blockage. When a certain amount of garbage accumulates in the drainage ditch 3, the bottom of the barrier net 8 can be pressed inward to open the inlet 7 and clean the accumulated garbage inside.

[0040] Example 2

[0041] like Figures 3 to 8As shown, several assembly slots 9 are provided on the outer side of the base frame 1. The inclination angle of the assembly slots 9 is adapted to the inclination angle of the side wall of the pit. The bottom of the support frame 2 is fixedly connected to several anchor rods 10. The diameter and spacing of the assembly slots 9 are adapted to the diameter and spacing of the anchor rods 10. The width of the support frame 2 is adapted to the width of the base frame 1. The support frame 2 is fixedly connected to the base frame 1 through the cooperation of the assembly slots 9 and the anchor rods 10. By setting the assembly slots 9 on the outer side of the base frame 1, the base frame is pre-embedded at the bottom edge of the pit. Then, the anchor rods 10 of the support frame 2 are inserted along the direction of the assembly slots and fixedly connected to the soil layer at the bottom of the pit. The base frame 1 and the support frame 2 are initially assembled and fixed. The support frame 2 is set at the edge of the pit to support and protect the side wall of the pit, thereby improving the stability and safety of the pit.

[0042] Example 3

[0043] like Figure 5 As shown, the reinforcing block 4 has an anchor hole in the middle. The anchor 5 passes through the anchor hole of the reinforcing block 4 and is fixedly connected to the side wall of the foundation pit. The top of the reinforcing block 4 is horizontal. By setting several reinforcing blocks 4 on the support frame 2, when the support frame 2 is assembled into the assembly slot 9 of the base frame 1, the top plane of the reinforcing block 4 can be struck to drive the anchor rod 10 at the bottom of the support frame 2 into the soil layer. This avoids the situation where it is inconvenient to apply force to the anchor rod 10 to drive it into the soil layer during the installation of the support frame 2. After the installation of the base frame 1 and the support frame 2 is completed, the anchor 5 can be driven into the soil layer of the side wall of the foundation pit to further reinforce the support frame 2. And some or all of the reinforcing blocks 4 can be selected for anchor 5 reinforcement as needed to improve the overall stability of the support structure.

[0044] like Figure 5 As shown, an annular groove 11 is provided on the outer side of the middle part of the anchor 5. Several spring plates 12 are fixedly connected inside the annular groove 11. The spring plates 12 are made of alloy spring steel. The thickness of the spring plates 12 is adapted to the depth of the annular groove 11. One end of the spring plate 12 opens towards the rear end of the anchor 5. By setting an annular groove 11 with spring plates 12 in the middle of the anchor 5, when the anchor 5 is driven into the anchor hole of the reinforcing block 4, the spring plates 12 can retract into the annular groove 11, so that the anchor 5 can pass smoothly through the anchor hole of the reinforcing block 4 and be driven into the soil. After being driven into the soil, the spring plates 12 automatically open under their own elastic force, which can further grip the soil, improve the biting force on the soil, and improve the overall stability of the support frame 2.

[0045] Example 4

[0046] The support frame 2 is grid-shaped, and the reinforcing block 4 is equipped with fixing hooks. The support frame 2 is fitted with a protective net through the fixing hooks. By setting the fixing hooks and the protective net on the support frame 2, after the installation of the support structure is completed, the protective net is wrapped and fixed to the inside of the support frame using the fixing hooks, which further protects and limits the soil on the side wall of the foundation pit, thereby improving the support effect of the support structure on the soil of the side wall of the foundation pit.

[0047] The working principle of this utility model is as follows:

[0048] S1. Excavate a groove at the edge of the foundation pit and pre-embed the base frame 1 at the bottom of the edge of the foundation pit;

[0049] S2. Insert the anchor rod 10 into the assembly slot 9 of the base frame 1 to complete the initial assembly of the support frame 2 and the base frame 1, and knock the top of the reinforcing block 4 to make the anchor rod 10 fully driven into the soil layer.

[0050] S3. Drive the anchor 5 into the anchor groove of the reinforcing block 4 to complete the further fixation;

[0051] S4. When water accumulates in the drainage trough 3, connect the pumping pipe to the pumping port 6 to quickly pump out the water from the foundation pit.

Claims

1. A foundation pit support structure, comprising a base frame (1), wherein a support frame (2) is assembled and connected to the outer side of the base frame (1), characterized in that: The base frame (1) has a drainage groove (3) inside, and the support frame (2) is fixedly connected to several reinforcing blocks (4). The support frame (2) is pushed into the anchor nail (5) through the reinforcing blocks (4).

2. The foundation pit support structure according to claim 1, characterized in that: The base frame (1) is set at the edge of the bottom of the pit, the direction of the drainage ditch (3) is adapted to the direction of the base frame (1), and the top of the four corners of the drainage ditch (3) is provided with a water inlet (6).

3. The foundation pit support structure according to claim 1, characterized in that: The drainage trough (3) has an inlet (7) on its inner side. The bottom of the inlet (7) has small slots that are evenly distributed. The bottom height of the small slots is equal to the bottom height of the drainage trough (3). The top of the inlet (7) is fixedly connected to a barrier net (8). The shape of the barrier net (8) is adapted to the shape of the inlet (7).

4. The foundation pit support structure according to claim 1, characterized in that: The base frame (1) has several assembly slots (9) on its outer side. The inclination angle of the assembly slots (9) is adapted to the inclination angle of the side wall of the pit. The bottom of the support frame (2) is fixedly connected to several anchor rods (10). The diameter and spacing of the assembly slots (9) are adapted to the diameter and spacing of the anchor rods (10). The width of the support frame (2) is adapted to the width of the base frame (1). The support frame (2) is fixedly connected to the base frame (1) through the cooperation of the assembly slots (9) and the anchor rods (10).

5. A building foundation pit support structure according to claim 1, characterized in that: An anchor hole is provided in the middle of the reinforcing block (4), and the anchor (5) passes through the anchor hole of the reinforcing block (4) and is fixedly connected to the side wall of the foundation pit. The top of the reinforcing block (4) is horizontal.

6. The foundation pit support structure according to claim 1, characterized in that: An annular groove (11) is provided on the outer side of the middle part of the anchor (5). Several spring plates (12) are fixedly connected inside the annular groove (11). The spring plates (12) are made of alloy spring steel. The thickness of the spring plates (12) is adapted to the depth of the annular groove (11). One end of the spring plates (12) opens towards the rear end of the anchor (5).

7. The foundation pit support structure according to claim 1, characterized in that: The support frame (2) is grid-shaped, and the reinforcing block (4) is provided with a fixing hook. The support frame (2) is equipped with a protective net through the fixing hook.

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