Supporting structure for foundation pit

Abstract

The utility model discloses a supporting structure for a foundation pit, and relates to the technical field of foundation pit supporting, the supporting structure comprises two base plates, one side of each base plate is provided with first connecting structures arranged in an array mode, the other side of each base plate is provided with second connecting structures arranged in an array mode, and the first connecting structures and the second connecting structures are arranged in a staggered mode; a rotating shaft sequentially penetrates through the first connecting structures and the second connecting structures which are connected in a staggered and inserted mode so that the two base plates can rotate. The adjusting structure comprises a first adjusting part, a second adjusting part and a third adjusting part, and the second adjusting part is provided with an adjusting rod; the two base plates are both provided with the supporting parts, and each supporting part comprises two supporting pieces which can be close to or away from the side edges, provided with the first connecting structures or the second connecting structures, of the base plates. According to the supporting structure for the foundation pit, the problems that the stability between different supporting plates is poor and a soil layer on the side edge of the foundation pit is prone to leaking from the joint between the two supporting plates due to the fact that the supporting structure cannot be used in cooperation with other supporting structures can be solved.

Description

Technical Field

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

[0002] The foundation pit is a soil pit excavated at the foundation design position according to the base elevation and foundation plane dimensions. If the excavation is not deep, the side slope can be used to make the soil slope stable. The slope size is determined according to relevant construction regulations. If the excavation is deeper and there are buildings nearby, the foundation pit wall support method can be used to prevent the outer soil layer from collapsing.

[0003] The patent scheme with publication number CN213897149U provides a pit foundation support structure for mining, but the device cannot be used in conjunction with other support plates during use, resulting in poor stability between different support plates, and the soil layer on the side of the foundation pit easily leaks out from the connection between the two sets of support plates, and has poor adaptability and stability. Utility Model Content

[0004] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application provides a support structure for a foundation pit, which can solve the problem that it cannot be used in conjunction with other support structures of the same type, resulting in poor stability between different support plates, and the soil layer on the side of the foundation pit is easy to leak out from the connection between the two groups of support plates, while further improving the support capacity.

[0005] According to the supporting structure for foundation pit described in the embodiment of the present application, it includes two base plates, one side of the base plates has a first connection structure arranged in an array, and the other side has a second connection structure arranged in an array, the first connection structure and the second connection structure are staggered, the second connection structure of one base plate is staggered with the first connection structure of another base plate, or the first connection structure of one base plate is staggered with the second connection structure of another base plate, and the rotating shaft passes through the staggered first connection structure and the second connection structure in sequence to enable the two base plates to rotate; at least one group of adjustment structures, including a first adjustment part, a second adjustment part and a third adjustment part, the first adjustment part and the second adjustment part are respectively arranged at the middle position of the two base plates, the second adjustment part has an adjustment rod, one end of the adjustment rod is hinged to the base plate, and the other end is slidably connected to the first adjustment part, so that the angle between the two base plates is adjustable, and the third adjustment part is used to limit the movement of the adjustment rod; and a support part, both base plates are provided with the support part, and the support part includes two support parts that can approach or move away from the side of the base plate where the first connection structure or the second connection structure is arranged.

[0006] According to the supporting structure for foundation pit described in the embodiment of the present application, the second adjusting part includes a slider, which is hinged to the end of the adjusting rod, and the first adjusting part includes a first limit plate and a second limit plate arranged in parallel, and the first limit plate and the second limit plate define a slide groove for the slider to slide.

[0007] According to the supporting structure for foundation pit described in the embodiment of the present application, the third adjusting portion is arranged on the first limiting plate, and the third adjusting portion can enter the sliding groove to connect with the sliding block to lock the sliding block to the first limiting plate.

[0008] According to the supporting structure for foundation pit described in the embodiment of the present application, the third adjusting part is a screw, the first limiting plate is provided with an avoidance groove connected to the slide groove, the stud section of the screw enters the slide groove from the avoidance groove, and the stud section is threadedly connected to the threaded hole of the slider.

[0009] According to the supporting structure for foundation pit described in the embodiment of the present application, a limiting portion is provided on the side of the sliding block facing the first limiting plate, the first limiting plate is provided with a limiting notch adapted to the limiting portion, and the third adjusting portion, the limiting portion and the limiting notch jointly limit the sliding block from leaving the sliding groove.

[0010] According to the supporting structure for foundation pit described in the embodiment of the present application, the supporting part also includes a driving structure and a transmission structure, the driving structure is fixed to the base plate, and the driving structure drives the two supporting members to move towards or away from each other at the same time through the transmission structure, wherein the two supporting members are respectively arranged on both sides of the driving structure.

[0011] According to the supporting structure for foundation pit described in the embodiment of the present application, the driving structure includes a screw and a sleeve, the screw is fixedly connected to the base plate, the sleeve is threadedly connected to the screw, and the transmission structure is transmission-connected to the sleeve. The transmission structure is used to convert the rotation of the sleeve into a linear reciprocating motion of the support member, wherein a hand-tightening rotating portion is provided at the end of the sleeve.

[0012] According to the supporting structure for foundation pit described in the embodiment of the present application, the upper half of the outer surface of the screw sleeve is provided with a left-handed thread, and the lower half of the outer surface of the screw sleeve is provided with a right-handed thread, and the transmission structure includes two first actuators, one of the first actuators is adapted to the left-handed thread, and the other of the first actuators is adapted to the right-handed thread, and the first actuator is connected to the support member through the transmission of the second actuator.

[0013] According to the supporting structure for foundation pit described in the embodiment of the present application, the two supporting members are arranged in parallel, and one end of the second actuator is hingedly connected to the first actuator, and the other end is hingedly connected to the supporting member.

[0014] According to the supporting structure for foundation pit described in the embodiment of the present application, a retractable pin is provided on the support member, and under the action of external force, the pin can move in a direction parallel to the support member.

[0015] The above-mentioned foundation pit support structure has at least the following beneficial effects: the two base plates are connected by the staggered insertion of the first connection structure and the second connection structure, and then connected in series in sequence through the rotating shaft, so that the two base plates can rotate with each other. The connection between the first connection structure and the second connection structure makes the connection between the two base plates tighter. No matter what angle the two base plates are configured at, it is not easy for the soil layer on the side of the foundation pit to leak from the connection between the two base plates. Furthermore, the design of the first connection structure and the second connection structure enables other base plates with the same connection structure to be connected with each other, which can solve the problem of being unable to be used in conjunction with other support structures of the same type. At the same time, it can also greatly improve the protective effect of the foundation pit support. The setting of the second adjustment structure can make the two substrates flip and adjust the angle formed by the two substrates according to the situation of the foundation pit. During the adjustment process of the two substrates, one end of the adjustment rod slides in the first adjustment part. After the two substrates are adjusted, the movement of the adjustment rod is limited by the third adjustment part. The two substrates and the adjustment rod form a stable triangular structure so that the two substrates can maintain the current angle. In addition, when the substrate of the present application is placed at the bottom of the foundation pit, the two support parts of the support part that can move closer or farther away from each other can increase the contact area between the bottom of the substrate and the foundation pit, so that the substrate can stand stably before forming a complete support structure, which is convenient for the subsequent connection and coordination of adjacent support structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of the connection between two substrates and an adjustment structure in an embodiment of the present application;

[0019] Figure 3 is a structural schematic diagram of the adjustment structure in an embodiment of the present application;

[0020] Figure 4 is a schematic structural diagram of an adjustment rod in an embodiment of the present application;

[0021] Figure 5 is a schematic structural diagram of a substrate in an embodiment of the present application;

[0022] Figure 6 is a schematic diagram of the structure of the driving structure in an embodiment of the present application;

[0023] Figure 7 It is a schematic structural diagram of the support portion in an embodiment of the present application. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0028] There are still problems in the design of the existing foundation pit protection structure. On the one hand, adjacent support structures cannot be well connected. Even if they can be connected, leakage is likely to occur at the connection. On the other hand, the sealing of the foundation support structure is not good. The soil layer on the side of the foundation pit is easy to leak from the connection between the two sets of support plates, and the adaptability and stability are poor.

[0029] For this purpose, refer to Figure 1 An embodiment of the present application provides a supporting structure for a foundation pit, specifically including two substrates 100, at least one set of adjustment structures and a support portion 300, wherein the adjustment structure is used to adjust the angle between the two substrates 100, and the support portion 300 is used to increase the bottom contact area of ​​the substrate 100.

[0030] Among them, Figure 5As shown, one side of the substrate 100 has a first connection structure 110 arranged in an array, and the other side has a second connection structure 120 arranged in an array. The first connection structure 110 and the second connection structure 120 are arranged in an offset manner, that is, when one side of the substrate 100 has a first connection structure 110, the second connection structure 120 is not arranged at the corresponding position on the other side, or when one side of the substrate 100 has a second connection structure 120, the first connection structure 110 is not arranged at the corresponding position on the other side. When the two substrates 100 are connected, as shown in FIG. Figure 1 and Figure 2 As shown, after the second connecting structure 120 of one substrate 100 is staggered and plugged with the first connecting structure 110 of another substrate 100, or the first connecting structure 110 of one substrate 100 is staggered and plugged with the second connecting structure 120 of another substrate 100, the rotating shaft passes through the staggered first connecting structure 110 and the second connecting structure 120 in sequence, so that the two substrates 100 can rotate. In the present application, the two substrates 100 are connected by interlacing the first connecting structure 110 and the second connecting structure 120, and then connected in series in sequence through a rotating shaft, so that the two substrates 100 can rotate with each other. The connection between the first connecting structure 110 and the second connecting structure 120 makes the connection between the two substrates 100 tighter. No matter what angle the two substrates 100 are configured at, it is not easy for the soil layer on the side of the foundation pit to leak out from the connection between the two substrates 100. Furthermore, the design of the first connecting structure 110 and the second connecting structure 120 allows other substrates 100 with the same connecting structure to be connected with each other, which can solve the problem of being unable to be used in conjunction with other support structures of the same type. At the same time, it can also greatly improve the protective effect of the foundation pit support.

[0031] Among them, at least one group of adjustment structures is provided, and of course, multiple groups of adjustment structures can also be provided, depending on the specific situation. Further, the adjustment structure includes a first adjustment portion 210, a second adjustment portion 220 and a third adjustment portion 230. The first adjustment portion 210 and the second adjustment portion 220 are respectively arranged at the middle position of the two substrates 100, and the second adjustment portion 220 has an adjustment rod 222, one end of the adjustment rod 222 is hinged to the substrate 100, and the other end is slidably connected to the first adjustment portion 210, so that the angle between the two substrates 100 is adjustable, and the third adjustment portion 230 is provided. The node 230 is used to limit the movement of the adjustment rod 222. The setting of the second adjustment structure can make the two substrates 100 flip and adjust the angle formed by the two substrates 100 according to the conditions of the foundation pit. During the adjustment of the two substrates 100, one end of the adjustment rod slides in the first adjustment portion 210. After the two substrates 100 are adjusted, the movement of the adjustment rod 222 is limited by the third adjustment portion 230. The two substrates 100 and the adjustment rod 222 form a stable triangular structure, so that the two substrates 100 can maintain the current angle, which is convenient for adjustment.

[0032] In addition, both substrates 100 are provided with a supporting portion 300, and the supporting portion 300 includes two supporting members 323 that can approach or move away from the side of the substrate 100 where the first connecting structure 110 or the second connecting structure 120 is arranged. When the substrate 100 of the present application is placed at the bottom of the foundation pit, the contact area between the bottom of the substrate 100 and the foundation pit can be increased by the two supporting members 323 of the supporting portion 300 that can approach or move away from each other, so that the substrate 100 can stand stably before forming a complete supporting structure, which is convenient for the subsequent connection and coordination of adjacent supporting structures.

[0033] Specifically, the first connecting structure 110 and the second connecting structure 120 of the present application are columnar, and the middle parts of the first connecting structure 110 and the second connecting structure 120 have through holes for the rotation shaft to pass through. Other adjacent supporting structures of the same type can also be connected to each other through the first connecting structure 110 and the second connecting structure 120, and then cooperate with the rotation shaft to ensure that there is no gap between the substrates 100 for soil and mud to pass through.

[0034] In some embodiments, Figure 2 As shown, a first hinged end 221 for hinged adjustment rod 222 is provided on the base plate 100, and the first hinged end 221 includes two upright blocks, which are fixed to the base plate 100 by welding to form a first hinge groove. After the end of the adjustment rod 222 enters the first hinge groove, it passes through the upright blocks and the adjustment rod 222 in sequence through the first connecting shaft, so that the adjustment rod 222 can rotate.

[0035] like Figure 3 and Figure 3 As shown, the second adjustment part 220 includes a slider 223, and the slider 223 is hinged to the end of the adjustment rod 222. Specifically, the slider 223 is formed with a second hinge groove. After the end of the adjustment rod 222 enters the second hinge groove, the end of the adjustment rod 222 is limited to be separated from the second hinge groove by the second connecting shaft 2233. Further, the first adjustment part 210 includes a first limiting plate 211 and a second limiting plate 212 arranged in parallel. The first limiting plate 211 and the second limiting plate 212 are welded and connected to the substrate 100, and the first limiting plate 211 is connected to the second limiting plate 212. The positioning plate 211 and the second limiting plate 212 are parallel to each other, and the first limiting plate 211 and the second limiting plate 212 define a slide groove for the slider 223 to slide. Since the slider 223 can slide in the slide groove, and the two ends of the adjusting rod 222 are respectively hinged to the slider 223 and the substrate 100, when the slider 223 is not restricted, the two substrates 100 can be flipped and adjusted to each other within a certain angle range to adapt to different foundation pit walls. In the embodiment of the present application, the angle between the two substrates 100 ranges from 90° to 180°.

[0036] like Figure 2 and Figure 3As shown, the third adjusting portion 230 is arranged on the first limiting plate 211, and the third adjusting portion 230 can enter the slide groove to connect the slider 223, so as to lock the slider 223 to the first limiting plate 211, thereby achieving the purpose of limiting the sliding of the slider 223, and then enabling the two substrates 100 to maintain the current angle. Specifically, in the embodiment of the present application, the third adjusting portion 230 is a screw, and the first limiting plate 211 is provided with an avoidance groove 2111 connected to the slide groove, and the stud section of the screw enters the slide groove from the avoidance groove 2111, and the stud section is threadedly connected to the threaded hole 2231 of the slider 223. The setting of the avoidance groove 2111 enables the screw to slide with the slider 223 when the screw is in the state of unblocking the restriction. When the two substrates 100 are adjusted, the slider 223 is locked by screwing the screw so that the screw tightens the slider 223 toward the first limiting plate 211.

[0037] like Figure 3 and Figure 4 As shown, a limiting portion 2232 is provided on one side of the slider 223 facing the first limiting plate 211, and the first limiting plate 211 is provided with a limiting notch 2112 adapted to the limiting portion 2232. The third adjusting portion 230, the limiting portion 2232 and the limiting notch 2112 jointly limit the slider 223 from escaping from the slide groove. When the slider 223 is placed in the slide groove, the limiting portion 2232 is in the limiting notch 2112. When the screw is locked, the slider 223 cannot slide out of the slide groove.

[0038] In some embodiments, the support portion 300 further includes a driving structure 310 and a transmission structure. The driving structure 310 is fixed to the substrate 100. The driving structure 310 drives the two support members 323 to move toward or away from each other at the same time through the transmission structure. Figure 1 As shown, two support members 323 are respectively arranged on both sides of the driving structure 310 .

[0039] Furthermore, the driving structure 310 includes a screw 312 and a sleeve 314. The screw 312 is fixedly connected to the base plate 100. Specifically, a fixing seat 311 for fixing the screw 312 is provided on the base plate 100. The sleeve 314 is threadedly connected to the screw 312. The transmission structure is connected to the sleeve 314. The transmission structure is used to convert the rotation of the sleeve 314 into a linear reciprocating motion of the support member 323. The end of the sleeve 314 is provided with a hand-tightening rotating part 313. The user can drive the sleeve 314 to rotate by hand-tightening the rotating part 313, which is easy to use.

[0040] Among them, Figure 6 and Figure 7As shown, the upper half of the outer surface of the screw sleeve 314 is provided with a left-handed thread 3141, and the lower half of the outer surface of the screw sleeve 314 is provided with a right-handed thread 3142. The transmission structure includes two first actuators 321, one first actuator 321 is adapted to the left-handed thread 3141, and the other first actuator 321 is adapted to the right-handed thread 3142. The first actuator 321 is connected to the support member 323 through the second actuator 322. Therefore, when the hand-tightening rotating part 313 is manually rotated to drive the screw sleeve 314 to rotate, under the restriction of the second actuator 322 and the support member 323, and due to the action of the left-handed thread 3141 and the right-handed thread 3142, the two first actuators 321 make linear motion and approach or move away from each other, and then the linear motion of the two first actuators 321 is converted into linear reciprocating motion of the two support members 323 through the second actuator 322.

[0041] Specifically, two supporting members 323 are arranged in parallel, one end of the second actuator 322 is hingedly connected to the first actuator 321, and the other end is hingedly connected to the supporting member 323. Since the hinge point at which one end of the second actuator 322 is hingedly connected to the supporting member 323 is fixed, the hinge point at which the second actuator 322 is hingedly connected to the first actuator 321 is variable. Therefore, when the two first actuators 321 are approaching or moving away from each other, the hinge point at which the second actuator 322 is hingedly connected to the first actuator 321 is also approaching or moving away from each other. When the hinge point at which the second actuator 322 is hingedly connected to the supporting member 323 is fixed, the second actuator 322 can drive the supporting member 323 to perform linear reciprocating motion. The two supporting members 323 of the supporting part 300 that can approach or move away from each other can increase the contact area between the bottom of the substrate 100 and the foundation pit, so that the substrate 100 can stand stably before forming a complete supporting structure, which is convenient for the subsequent connection and coordination of adjacent supporting structures.

[0042] Preferably, a retractable latch 340 is provided on the support member 323. Under the action of an external force, the latch 340 can move in a direction parallel to the support member 323. Specifically, Figure 7The support member 323 is provided with a docking portion 324 for the latch 340 to be plugged into, and the moving direction of the latch 340 is guided by a guide hole provided on the docking portion 324, and a limit plate 341 is provided at the end of the latch 340. A spring 330 is sleeved on the latch 340, and one end of the spring abuts against the limit plate 341, and the other end abuts against the docking portion 324. The arrangement of the limit plate 341, the docking portion 324, and the spring 330 enables the latch 340 to be retracted and extended, so that when the base plate 100 stands on the foundation pit, the limit plate 341 is manually pressed to allow the latch 340 to enter the foundation pit soil, so that a separate supporting structure can stand on the foundation pit, which is convenient for adjustment and also makes the supporting structure more stable. When the latch 340 is pulled out of the foundation pit soil, the latch 340 will return to its original state under the action of the spring, and will not affect the next use.

[0043] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A supporting structure for a foundation pit, characterized in that: include Two substrates (100), one side of the substrate (100) having first connection structures (110) arranged in an array, and the other side of the substrate (100) having second connection structures (120) arranged in an array, the first connection structures (110) and the second connection structures (120) being arranged in an offset manner, the second connection structures (120) of one substrate (100) being staggered and plugged with the first connection structures (110) of the other substrate (100), or the first connection structures (110) of one substrate (100) being staggered and plugged with the second connection structures (120) of the other substrate (100), a rotating shaft sequentially passes through the staggered first connection structures (110) and the second connection structures (120), so that the two substrates (100) can rotate; at least one set of adjustment structures, comprising a first adjustment portion (210), a second adjustment portion (220) and a third adjustment portion (230), wherein the first adjustment portion (210) and the second adjustment portion (220) are respectively arranged at the middle positions of the two substrates (100), the second adjustment portion (220) has an adjustment rod (222), one end of the adjustment rod (222) is hinged to the substrate (100), and the other end is slidably connected to the first adjustment portion (210), so that the angle between the two substrates (100) is adjustable, and the third adjustment portion (230) is used to limit the movement of the adjustment rod (222); and A support portion (300), each of the two substrates (100) being provided with the support portion (300), the support portion (300) comprising two support members (323) capable of approaching or moving away from a side of the substrate (100) on which the first connecting structure (110) or the second connecting structure (120) is arranged.

2. The foundation pit support structure according to claim 1, characterized in that: The second adjustment part (220) comprises a slider (223), wherein the slider (223) is hinged to the end of the adjustment rod (222); the first adjustment part (210) comprises a first limit plate (211) and a second limit plate (212) which are arranged in parallel, wherein the first limit plate (211) and the second limit plate (212) define a slide groove for the slider (223) to slide.

3. The foundation pit support structure according to claim 2, characterized in that: The third adjustment portion (230) is arranged on the first limiting plate (211), and the third adjustment portion (230) can enter the sliding groove to connect with the sliding block (223) so as to lock the sliding block (223) on the first limiting plate (211).

4. The foundation pit support structure according to claim 3, characterized in that: The third adjustment portion (230) is a screw, the first limiting plate (211) is provided with an avoidance groove (2111) connected to the slide groove, the stud section of the screw enters the slide groove from the avoidance groove (2111), and the stud section is threadedly connected to the threaded hole (2231) of the slider (223).

5. The foundation pit support structure according to claim 3, characterized in that: A limiting portion (2232) is provided on one side of the sliding block (223) facing the first limiting plate (211); the first limiting plate (211) is provided with a limiting notch (2112) adapted to the limiting portion (2232); the third adjusting portion (230), the limiting portion (2232) and the limiting notch (2112) jointly limit the sliding block (223) from leaving the sliding groove.

6. The foundation pit support structure according to claim 1, characterized in that: The support portion (300) further comprises a driving structure (310) and a transmission structure, wherein the driving structure (310) is fixed to the base plate (100), and the driving structure (310) drives the two supporting members (323) to move towards or away from each other at the same time through the transmission structure, wherein the two supporting members (323) are respectively arranged on both sides of the driving structure (310).

7. The foundation pit support structure according to claim 6, characterized in that: The driving structure (310) comprises a screw rod (312) and a screw sleeve (314); the screw rod (312) is fixedly connected to the base plate (100); the screw sleeve (314) is threadedly connected to the screw rod (312); the transmission structure is transmission-connected to the screw sleeve (314); the transmission structure is used to convert the rotation of the screw sleeve (314) into a linear reciprocating motion of the support member (323); wherein a hand-tightening rotating portion (313) is provided at the end of the screw sleeve (314).

8. The foundation pit support structure according to claim 7, characterized in that: The upper part of the outer surface of the screw sleeve (314) is provided with a left-handed thread (3141), and the lower part of the outer surface of the screw sleeve (314) is provided with a right-handed thread (3142). The transmission structure includes two first actuators (321), one of the first actuators (321) is adapted to the left-handed thread (3141), and the other of the first actuators (321) is adapted to the right-handed thread (3142). The first actuator (321) is transmission-connected to the support member (323) via the second actuator (322).

9. The foundation pit support structure according to claim 8, characterized in that: The two supporting members (323) are arranged in parallel, and one end of the second actuator (322) is hingedly connected to the first actuator (321), and the other end is hingedly connected to the supporting member (323).

10. The foundation pit support structure according to claim 1, characterized in that: The support member (323) is provided with a retractable latch (340), and under the action of an external force, the latch (340) can move in a direction parallel to the support member (323).

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