A foundation pit support structure and construction method

Abstract

The present application relates to the technical field of foundation pit support, and in particular to a foundation pit support structure and construction method, comprising a plurality of support bars arranged crosswise in a foundation pit, concrete poured on the support bars, an inclined groove and a reinforcement groove opened on the inner wall of the foundation pit, the inclined groove and the reinforcement groove are connected, the end of the inclined groove away from the support bars is inclined in a vertical direction, a diagonal brace rod is arranged in the inclined groove, a reinforcement rod is arranged in the reinforcement groove, a connecting sleeve for connecting the reinforcement rod is arranged on the diagonal brace rod, a clamping piece is arranged on the reinforcement rod and the diagonal brace rod, and the reinforcement rod and the diagonal brace rod are connected to the support bars through the clamping piece. The present application has the effect of reducing the occupied construction space.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit support, and in particular to a foundation pit support structure and a construction method. Background Art

[0002] Foundation pit support is a measure of support, reinforcement and protection adopted for the side walls of the foundation pit and the surrounding environment in order to protect the underground structure construction and the safety of the surrounding environment of the foundation pit.

[0003] In the related technology, the foundation pit support system includes a deep foundation pit system, and water-stop piles and support piles are arranged in the deep foundation pit body. A support structure is arranged on one side of the support pile. The support structure includes an oblique support part and a vertical support part. The vertical support part is abutted against the inner wall of the foundation pit, one end of the oblique support part is abutted against the vertical support part, and the other end is abutted against the bottom wall of the foundation pit, thereby enhancing the stability of the vertical support part and improving the support effect.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the vertical supporting parts are supported by the inclined supporting parts, and the inclined supporting parts are arranged in the foundation pit, which occupies the construction space of the foundation pit and affects the construction. Summary of the invention

[0005] In order to reduce the occupied construction space, the present application provides a foundation pit support structure and a construction method.

[0006] The present application provides a foundation pit support structure and construction method using the following technical solutions:

[0007] A foundation pit support structure comprises a plurality of support bars arranged crosswise in a foundation pit, concrete is poured on the support bars, an inner wall of the foundation pit is provided with an inclined groove and a reinforcement groove, the inclined groove and the reinforcement groove are connected, one end of the inclined groove away from the support bar is inclined in a vertical direction, an oblique support rod is arranged in the inclined groove, a reinforcement rod is arranged in the reinforcement groove, a connecting sleeve for connecting the reinforcement rod is arranged on the oblique support rod, a clamping piece is arranged on the reinforcement rod and the oblique support rod, and the reinforcement rod and the oblique support rod are connected to the support bar via the clamping piece.

[0008] By adopting the above technical scheme, diagonal braces and reinforcing rods are arranged on the inner wall of the foundation pit. The diagonal braces are arranged at an angle to improve the stability of the coordination with the inner wall of the foundation pit. At the same time, the diagonal braces and reinforcing rods are connected to the foundation pit through the reinforcing rods and the diagonal braces. The diagonal braces and reinforcing rods are connected to the supporting bars, and then concrete is poured on the supporting bars, thereby improving the overall stability and reducing the construction space occupied in the foundation pit.

[0009] Optionally, a mounting groove is provided on the diagonal support rod, the connecting sleeve is arranged in the mounting groove, the reinforcing rod is inserted into the connecting sleeve, and the connecting sleeve and the reinforcing rod are threadedly connected.

[0010] By adopting the above technical solution, the strengthening rod and the diagonal brace are connected through a connecting sleeve and are connected by thread fit for installation and fixation.

[0011] Optionally, a guiding ring is fixedly arranged at one end of the connecting sleeve close to the strengthening rod. Both ends of the opening of the guiding ring are set to be of different sizes. The end with the larger opening of the guiding ring faces the strengthening rod, and the end of the strengthening rod close to the guiding ring is set to be pointed.

[0012] By adopting the above technical solution, the end of the strengthening rod is set to be pointed and the end with the larger opening of the guiding ring faces the strengthening rod, so as to insert the strengthening rod into the guiding ring for fixation.

[0013] Optionally, multiple groups of inclined grooves are provided. Every two adjacent groups of inclined grooves are inclined in opposite directions. Each group of inclined grooves includes at least one inclined groove. The multiple inclined grooves are arranged at intervals along the length direction of the side wall of the foundation pit. There are multiple strengthening grooves, and the multiple strengthening grooves are arranged in one-to-one correspondence with the multiple inclined grooves.

[0014] By adopting the above technical solution, multiple inclined grooves and multiple strengthening grooves are provided, and the inclined grooves are inclined in different directions, thereby improving the stability of the diagonal brace and further improving the stability of the support bars.

[0015] Optionally, a drain pipe is arranged between the support bars. The drain pipe is arranged inside the support bars. At least one drain pipe is provided. The multiple drain pipes are evenly arranged at intervals on the inner side wall of the foundation pit.

[0016] By adopting the above technical solution, the water between the inner wall of the foundation pit and the support bars is drained through the drain pipe, reducing the influence of water on the support bars and improving the stability of the support bars.

[0017] Optionally, a water storage tank is opened at the bottom of the foundation pit. A drainage mechanism is arranged on the foundation pit. The drainage mechanism includes a power component and a water pipe; one end of the water pipe is arranged in the water storage tank and the other end is arranged outside the foundation pit, and the power component is arranged on the water pipe.

[0018] By adopting the above technical solution, the water drained by the drain pipe enters the water storage tank. Under the action of the power component, the water is discharged out of the foundation pit through the water pipe, reducing the influence of water on the foundation pit.

[0019] Optionally, the support bars extend to the edge of the opening of the foundation pit. A slot is opened on the strengthening rod close to the ground. A stabilizing rod is arranged in the slot. The stabilizing rod is threadedly engaged with the slot, and the stabilizing rod is fixedly connected to the support bars.

[0020] By adopting the above technical solution, the stabilizer bar and the reinforcing bar are connected, enhancing the stability of the support bars arranged at the opening edge of the foundation pit, and reinforcing the opening edge of the foundation pit.

[0021] Optionally, a water baffle is provided at the edge of the foundation pit. One side of the water baffle is fixedly connected to the support bar, and the other side is inclined away from the ground to form an inclined plane.

[0022] By adopting the above technical solution, the water baffle is inclined to block the water seeping from the ground into the ground, reducing the phenomenon of water seepage entering between the inner wall of the foundation pit and the support bar, and enhancing the stability of the support bar for supporting the foundation pit.

[0023] Optionally, the connecting sleeve and the inner wall of the installation groove are arranged at intervals, and the connecting sleeve is rotatably arranged in the installation groove.

[0024] By adopting the above technical solution, the connecting sleeve is rotatably arranged in the installation groove so that the connecting sleeve can be rotated to cooperate with the reinforcing bar, thereby facilitating the connection of the installation rod and the connecting sleeve, and further connecting the reinforcing bar and the diagonal brace together.

[0025] A construction method for a foundation pit support structure, characterized by including the following steps:

[0026] The first step is to respectively open an inclined groove and a reinforcing groove on the inner wall of the foundation pit along the direction towards or away from the ground, and make the reinforcing bar groove communicate with the inclined groove;

[0027] The second step is to place the diagonal brace in the inclined groove, and then place the reinforcing bar in the reinforcing groove;

[0028] The third step is to insert the end of the reinforcing bar into the connecting sleeve and rotate the reinforcing bar to threadedly connect the reinforcing bar and the connecting sleeve;

[0029] The fourth step is to insert a stabilizer bar at the edge of the foundation pit close to the ground, and connect the stabilizer bar to the reinforcing bar through a slot;

[0030] The fifth step is to obliquely bury the water baffle at the edge of the opening of the foundation pit;

[0031] The sixth step is to cross-arrange the support bars on the inner wall of the foundation pit, and at the same time extend the support bars to the edge of the opening of the foundation pit on the ground. Then, connect the reinforcing bar and the diagonal brace to the support bars respectively through clamping members, and at the same time weld the stabilizer bar to the support bars;

[0032] The seventh step is to weld a drain pipe on the support bar and pour concrete. First, pour the concrete until it covers the support bar, then place a connecting rod on the concrete, and then pour the concrete to the middle position of the connecting rod. Then, remove the connecting rod to form a water trough at the position of the connecting rod;

[0033] In the eighth step, water storage tanks are excavated at corresponding positions at the bottom of the foundation pit and the water tank, then water pipes are installed in the foundation pit, and power components are installed on the water pipes.

[0034] By adopting the above technical solution, diagonal braces and reinforcing bars are provided to support the support bars, and then concrete is poured on the support bars, thereby improving the stability of the foundation pit support. At the same time, the water in the foundation pit and the water extending into the foundation pit are discharged through the water pipes and the water tank and the power components. A water retaining plate is arranged at the opening edge of the foundation pit to reduce the phenomenon that the water extending from the ground into the ground enters between the support bars and the inner wall of the foundation pit, and at the same time, the space occupied by the foundation pit support is reduced. Description of the Drawings

[0035] Figure 1 is a schematic structural view of the foundation pit support structure in Embodiment 1 of the present application.

[0036] Figure 2 is a sectional view of the foundation pit support structure from another perspective in Embodiment 1 of the present application.

[0037] Figure 3 is a partial view of the foundation pit support structure in Embodiment 1 of the present application.

[0038] Figure 4 is a schematic structural view of the reinforcing bar in the foundation pit support structure in Embodiment 1 of the present application.

[0039] Figure 5 is a schematic structural view of the diagonal brace in the foundation pit support structure in Embodiment 1 of the present application.

[0040] Reference Signs: 1, foundation pit; 11, inclined groove; 12, reinforcing groove; 13, water storage tank; 2, support bar; 3, diagonal brace; 31, installation groove; 32, connecting sleeve; 33, guiding ring; 4, reinforcing bar; 41, insertion slot; 42, stabilizing bar; 5, clamping member; 51, clamping sleeve; 6, drain pipe; 7, water tank; 8, drainage mechanism; 81, water pipe; 82, power component; 9, water retaining plate. Detailed Description of the Embodiment

[0041] The following will further describe the present application in detail Figures 1-5 in conjunction with the attached

[0042] Embodiment 1

[0043] A foundation pit support structure. Refer to Figure 1 , the foundation pit support structure includes support bars 2 arranged on the inner wall of the foundation pit 1. There are multiple support bars 2 and the multiple support bars 2 are arranged crosswise. The support bars 2 can be set as steel bars and the steel bars are welded and fixed to each other, and then cement is sprayed on the outside of the support bars 2 to support the inner wall of the foundation pit 1.

[0044] Refer to Figure 2And Figure 3 In order to improve the stability of the cooperation between the support reinforcement 2 and the inner wall of the foundation pit 1, inclined grooves 11 are provided on the inner wall of the foundation pit 1. There are multiple groups of inclined grooves 11, and each group includes multiple inclined grooves 11. Each group of inclined grooves 11 is horizontally spaced along the length direction of the side of the inner wall of the foundation pit 1. One end of the inclined groove 11 facing away from the inside of the foundation pit 1 is inclined in the vertical direction, and two adjacent groups of inclined grooves 11 are inclined in opposite directions. In the inclined groove 11, there is an inclined strut 3. There are multiple inclined struts 3, and the multiple inclined struts 3 are arranged in one-to-one correspondence with the inclined grooves 11. The end of the inclined strut 3 extends to the outside of the inclined groove 11 and is welded and fixed to the support reinforcement 2. First, the inclined strut 3 is inserted into the inclined groove 11, and then it is connected to the support reinforcement 2. Through the inclined strut 3, the connection strength between the support reinforcement 2 in the horizontal direction and the inner wall of the foundation pit 1 is improved, and further the stability of the cooperation between the support reinforcement 2 and the inner wall of the foundation pit 1 is improved. Combined with Figure 4 One end of the inclined strut 3 facing away from the support reinforcement 2 is pointed, so as to insert the inclined strut 3 into the inclined groove 11.

[0045] Refer to Figure 2 And Figure 3 On the inner wall of the foundation pit 1, reinforcing grooves 12 are provided. There are multiple reinforcing grooves 12, and the multiple reinforcing grooves 12 are arranged in one-to-one correspondence with the inclined grooves 11. The reinforcing grooves 12 are perpendicular to the inner wall of the foundation pit 1, and the reinforcing grooves 12 are communicated with the inclined grooves 11. In the reinforcing grooves 12, there are reinforcing rods 4. The reinforcing rods 4 are inserted into the reinforcing grooves 12 and connected to the inclined struts 3. One end of the reinforcing rod 4 facing away from the inclined strut 3 is connected to the support reinforcement 2. Through the reinforcing rods 4 and the inclined struts 3, the stability of the support reinforcement 2 is improved.

[0046] Refer to Figure 4 On the reinforcing rod 4 and the inclined strut 3, clamping members 5 are respectively provided. The clamping member 5 includes two mutually hinged clamping sleeves 51. After the reinforcing rod 4 and the inclined strut 3 are installed, the clamping sleeve 51 is rotated until its inner wall abuts against the support reinforcement 2, and then the position of the clamping sleeve 51 is fixed by bolts, thereby improving the installation efficiency.

[0047] Refer to Figure 4 And Figure 5 In order to facilitate the connection between the reinforcing rod 4 and the inclined strut 3, an installation groove 31 is provided on the inclined strut 3. In the installation groove 31, there is a connecting sleeve 32. The opening of the connecting sleeve 32 faces the direction of the reinforcing rod 4. A threaded groove is provided on the inner wall of the connecting sleeve 32. The reinforcing rod 4 is inserted into the connecting sleeve 32, and an external thread is provided on the reinforcing rod 4. The reinforcing rod 4 is threadedly engaged with the connecting sleeve 32 through the external thread and the threaded groove. After the reinforcing rod 4 is inserted into the connecting sleeve 32, the reinforcing rod 4 is rotated so that the reinforcing rod 4 is threadedly engaged with the connecting sleeve 32, thereby mating the reinforcing rod 4 and the connecting sleeve 32.

[0048] Refer to Figure 4 And Figure 5The end of the reinforcing rod 4 close to the connecting sleeve 32 is set to be pointed, and the end of the connecting sleeve 32 close to the reinforcing rod 4 is welded and fixed with a guide ring 33. The openings of the two ends of the guide ring 33 are set to different sizes. The end of the guide ring 33 with a small opening is connected to the connecting sleeve 32, and the end with a large opening is set toward the reinforcing rod 4, so that the reinforcing rod 4 can be inserted into the connecting sleeve 32. The connecting sleeve 32 and the inner wall of the installation groove 31 are spaced apart and the connecting sleeve 32 is rotatably set in the installation groove 31. When the reinforcing rod 4 is inserted into the reinforcing rod 4, the connecting sleeve 32 can be rotated to correspond to the reinforcing rod 4, and the reinforcing rod 4 is inserted into the connecting sleeve 32.

[0049] Reference Figure 4 and Figure 5 , the support bar 2 extends to the edge of the foundation pit 1 on the ground, and then concrete is sprayed on the support bar 2 at the edge of the foundation pit 1 to fix it, further improving the stability of the cooperation between the support bar 2 and the foundation pit 1. A slot 41 is opened in the vertical direction on a group of reinforcing rods 4 close to the ground, and a stabilizing rod 42 is arranged in the slot 41. The stabilizing rod 42 is provided with a thread near the slot 41, and the stabilizing rod 42 and the slot 41 are threadedly connected. The end of the stabilizing rod 42 away from the slot 41 extends toward the ground to connect with the support bar 2 at the edge of the foundation pit 1, and is fixed by welding, thereby improving the strength at the upper edge of the foundation pit 1.

[0050] Reference Figure 2 and Figure 3 In order to reduce the water seepage between the inner wall of the foundation pit 1 and the supporting reinforcement 2, a drainage pipe 6 is arranged between the supporting reinforcement 2. A plurality of drainage pipes 6 are arranged and the plurality of drainage pipes 6 are evenly spaced on the inner wall of the foundation pit 1. One end of the drainage pipe 6 is arranged in the foundation pit 1, and the other end passes through the supporting reinforcement 2 and is arranged inside the foundation pit 1. The drainage pipe 6 is welded and fixed in the drainage pipe 6, and then concrete is poured on the supporting reinforcement 2. When there is water seepage between the inner wall of the foundation pit 1 and the concrete, the water is discharged through the drainage pipe 6, thereby reducing the water seepage between the inner wall of the foundation pit 1 and the concrete, which affects the stability of the coordination between the foundation pit 1 and the supporting reinforcement 2.

[0051] Reference Figure 1 and Figure 2 After pouring concrete, a plurality of mutually intersecting and interconnected water grooves 7 are opened on the side of the concrete close to the interior of the foundation pit 1. The intersection of two water grooves 7 is set at one end of the drainage pipe 6 close to the inner wall of the foundation pit 1. The water on the side of the foundation pit 1 penetrates into the side of the concrete close to the interior of the foundation pit 1 through the concrete, enters the water grooves 7, and is discharged through the water grooves 7.

[0052] Reference Figure 1 and Figure 2, To facilitate the drainage of water in the drain pipe 6 and the water tank 7, a water storage tank 13 is provided in the foundation pit 1. The water storage tank 13 is communicated with the water tank 7. A drainage mechanism 8 is provided on the foundation pit 1. The drainage mechanism 8 includes a power component 82 and a water pipe 81. The power component 82 can be set as a water pump. The power component 82 is arranged at the edge above the foundation pit 1. One end of the water pipe 81 is arranged on the ground and the other end extends into the foundation pit 1 to the water storage tank 13. The water in the drain pipe 6 and the water tank 7 enters the water storage tank 13, and the water pump discharges the water in the water storage tank 13 through the water pipe 81.

[0053] Referring to Figure 1 and Figure 2 , To reduce the influence of the water on the ground on the foundation pit 1, a water retaining plate 9 is provided on the ground. One side of the water retaining plate 9 is welded and fixed to the support reinforcement 2, and the other side is inserted into the ground and is inclined in the direction away from the ground to form an inclined surface. After pouring concrete on the support reinforcement 2, the concrete is connected to the water retaining plate 9. The water on the ground is blocked by the water retaining plate 9, and at the same time, the water seeping into the ground surface is reduced from entering between the support reinforcement 2 and the inner wall of the foundation pit 1, improving the stability of the foundation pit 1 support.

[0054] Embodiment 2

[0055] A construction method for a foundation pit support structure includes the following steps:

[0056] The first step: Oblique grooves 11 are respectively opened on the inner wall of the foundation pit 1 along the direction towards the ground or away from the ground, and a strengthening groove 12 is opened in the horizontal direction, and the strengthening rod 4 groove is communicated with the oblique groove 11.

[0057] The second step: Place the inclined strut 3 in the oblique groove 11, and then place the strengthening rod 4 in the strengthening groove 12.

[0058] The third step: Insert the end of the strengthening rod 4 into the connecting sleeve 32 and rotate the strengthening rod 4 to threadedly connect the strengthening rod 4 and the connecting sleeve 32.

[0059] The fourth step: Insert the stabilizing rod 42 at the edge of the foundation pit 1 close to the ground, and connect the stabilizing rod 42 to the strengthening rod 4 through the slot 41.

[0060] The fifth step: Incline and bury the water retaining plate 9 at the edge of the opening of the foundation pit 1.

[0061] The sixth step: Cross-arrange the support reinforcement 2 on the inner wall of the foundation pit 1, and at the same time extend the support reinforcement 2 to the edge of the opening of the foundation pit 1 on the ground. Then connect the strengthening rod 4 and the inclined strut 3 to the support reinforcement 2 respectively through the clamping member 5, and at the same time weld and fix the stabilizing rod 42 on the support reinforcement 2.

[0062] Step 7: Weld the drain pipe 6 on the support reinforcement 2, and pour concrete. First, pour the concrete until it covers the support reinforcement 2, then place the connecting rod on the concrete, and then pour the concrete to the middle position of the connecting rod. Then remove the connecting rod to form a water trough 7 at the position of the connecting rod.

[0063] Step 8: Excavate a water storage trough 13 at the corresponding position of the bottom of the foundation pit 1 and the water trough 7. Then install a water pipe 81 in the foundation pit 1 and install a water pump on the water pipe 81.

[0064] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A construction method for a foundation pit support structure, including a plurality of support bars (2) arranged crosswise in a foundation pit (1), and concrete is poured on the support bars (2), characterized in that: An inclined groove (11) and a reinforcement groove (12) are provided on the inner wall of the foundation pit (1), the inclined groove (11) and the reinforcement groove (12) are connected, one end of the inclined groove (11) away from the supporting reinforcement (2) is arranged to be inclined in the vertical direction, an inclined support rod (3) is arranged in the inclined groove (11), a reinforcing rod (4) is arranged in the reinforcing groove (12), a connecting sleeve (32) for connecting the reinforcing rod (4) is arranged on the inclined support rod (3), a clamping piece (5) is arranged on the reinforcing rod (4) and the inclined support rod (3), and the reinforcing rod (4) and the inclined support rod (3) are connected to the supporting reinforcement (2) via the clamping piece (5); The diagonal brace rod (3) is provided with a mounting groove (31), the connecting sleeve (32) is arranged in the mounting groove (31), the reinforcing rod (4) is inserted into the connecting sleeve (32), and the connecting sleeve (32) and the reinforcing rod (4) are threadedly connected; A guide ring (33) is fixedly provided on one end of the connecting sleeve (32) close to the reinforcing rod (4), and openings at both ends of the guide ring (33) are arranged to have different sizes, the end of the guide ring (33) with the larger opening is arranged toward the reinforcing rod (4), and the end of the reinforcing rod (4) close to the guide ring (33) is arranged to be in a pointed shape; A drainage pipe (6) is arranged between the supporting bars (2), the drainage pipe (6) is inserted into the supporting bars (2), at least one drainage pipe (6) is provided, and a plurality of drainage pipes (6) are evenly spaced apart on the inner wall of the foundation pit (1); A water storage tank (13) is provided at the bottom of the foundation pit (1); a drainage mechanism (8) is provided on the foundation pit (1); the drainage mechanism (8) comprises a power component (82) and a water pipe (81); one end of the water pipe (81) is arranged in the water storage tank (13), and the other end is arranged outside the foundation pit (1); the power component (82) is arranged on the water pipe (81); The following steps are also included: The first step is to open an inclined groove (11) and a reinforcement groove (12) on the inner wall of the foundation pit (1) towards the ground or away from the ground, and connect the groove of the reinforcement rod (4) and the inclined groove (11); The second step is to place the diagonal brace rod (3) in the diagonal groove (11), and then place the reinforcing rod (4) in the reinforcing groove (12); The third step is to insert the end of the reinforcing rod (4) into the connecting sleeve (32) and rotate the reinforcing rod (4) to threadably connect the reinforcing rod (4) and the connecting sleeve (32); Step 4: insert a stabilizing rod (42) into the edge of the foundation pit (1) close to the ground, and connect the stabilizing rod (42) to the reinforcing rod (4) through the slot (41); Step 5: bury the water retaining plate (9) at an angle to the edge of the opening of the foundation pit (1); Step 6: Cross-arrange the supporting bars (2) on the inner wall of the foundation pit (1), and extend the supporting bars (2) to the ground to the edge of the opening of the foundation pit (1); then connect the reinforcing rods (4) and the diagonal bracing rods (3) to the supporting bars (2) respectively through the clamping parts (5); and weld the stabilizing rods (42) to the supporting bars (2); Step 7: Weld the drain pipe (6) to the support reinforcement (2), and pour concrete. First, pour the concrete until it covers the support reinforcement (2), then place the connecting rod on the concrete, and then pour the concrete to the middle position of the connecting rod. Then remove the connecting rod to form a water trough (7) at the position of the connecting rod. Step 8: Excavate a water storage trough (13) at the corresponding position of the bottom of the foundation pit (1) and the water trough (7). Then install a water pipe (81) in the foundation pit (1), and install a power component (82) on the water pipe (81).

2. The construction method of the foundation pit support structure according to claim 1, characterized in that: A plurality of groups of the inclined grooves (11) are provided. Each two adjacent groups of the inclined grooves (11) are inclined in opposite directions. Each group of the inclined grooves (11) includes at least one inclined groove (11). The plurality of inclined grooves (11) are arranged at intervals along the length direction of the side surface of the foundation pit (1). There are a plurality of the strengthening grooves (12), and the plurality of strengthening grooves (12) are arranged in one-to-one correspondence with the plurality of inclined grooves (11).

3. The construction method of the foundation pit support structure according to claim 1, characterized in that: The support reinforcement (2) extends to the edge of the opening of the foundation pit (1). A slot (41) is formed in the strengthening rod (4) close to the ground. A stabilizing rod (42) is arranged in the slot (41). The stabilizing rod (42) is in threaded fit connection with the slot (41), and the stabilizing rod (42) is fixedly connected with the support reinforcement (2).

4. The construction method of the foundation pit support structure according to claim 1, characterized in that: A water baffle (9) is arranged at the edge of the foundation pit (1). One side of the water baffle (9) is fixedly connected with the support reinforcement (2), and the other side is inclined in a direction away from the ground to form an inclined surface.

5. The construction method of the foundation pit support structure according to claim 1, characterized in that: The connecting sleeve (32) is arranged at an interval from the inner wall of the installation groove (31), and the connecting sleeve (32) is rotatably arranged in the installation groove (31).

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