A prefabricated deep foundation pit supporting structure

Abstract

The utility model relates to the technical field of foundation pit support, concretely to a kind of assembled deep foundation pit support structure, including support mechanism and retaining mechanism, retaining mechanism is clamped in the side of support mechanism, and multiple retaining mechanisms are connected head to tail between;Retaining mechanism includes retaining board, and retaining board is slidably connected with pressure solid strip;Retaining board is equipped with the first connecting section on one side, and the second connecting section is arranged at the end of retaining board away from the first connecting section, and chute is opened in retaining board;The slope is opened in both ends of pressure solid strip, and the slide bar is fixedly connected in the side of pressure solid strip away from slope. Advantageous effect lies in: when using, the stability of retaining board is improved;After raining, the pressure of rainwater and soil on retaining board will make the connection of adjacent retaining board more closely, avoid the rainwater outside foundation pit from the inner wall of foundation pit from adjacent retaining board connection place seep into foundation pit, thereby improve waterproof effect.

Description

Technical Field

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

[0002] Deep foundation pit support structures are retaining and reinforcing measures to ensure the safety of underground construction and the surrounding environment. They can be classified into three types: pile-wall type, gravity type, and combined type. Pile-wall type includes sheet piles, bored piles, and diaphragm walls. Among these, diaphragm walls offer strong integrity and good water-stopping effect, making them suitable for complex environments and projects requiring strict deformation control. Gravity type mainly uses deep-mixed cement piles and soil nailing walls, relying on their own weight or anchor bolts for anti-slip properties. They are suitable for non-soft soil or dewatered foundation pits with depths of 6-12 meters. Combined type structures, such as SMW piles and pile-anchor structures, combine retaining walls with steel sections and anchor bolts, offering advantages in water-stopping, high efficiency, and deformation control. They are suitable for various soil layers, including cohesive soil and sandy soil, and can meet the construction needs of different depths and environments.

[0003] A prefabricated deep foundation pit support structure disclosed in Chinese patent CN209339158U has high positioning accuracy, is easy to install, and can effectively improve construction efficiency. However, compared with existing technologies and comparative solutions, this support structure still has the following problems in actual use:

[0004] Existing support structures are mostly anchored to the inner wall of the foundation pit by anchor rods, which is a relatively simple fixing method. When the foundation pit is located in soft soil or sandy soil, the stability is not good during the support of the inner wall of the foundation pit. At the same time, after rain, rainwater outside the foundation pit will seep into the foundation pit through the gaps between the adjacent hanging plates along the inner wall of the foundation pit, resulting in poor waterproofing. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a prefabricated deep foundation pit support structure.

[0006] The purpose of this utility model is achieved through the following technical solution: a prefabricated deep foundation pit support structure, including a support mechanism and a retaining mechanism, wherein the retaining mechanism is snapped onto one side of the support mechanism and multiple retaining mechanisms are connected end to end.

[0007] The retaining structure includes a retaining plate, on which a retaining strip is slidably connected;

[0008] The retaining plate has locking holes, a first connecting section is provided on one side of the retaining plate, a second connecting section is provided at the end of the retaining plate away from the first connecting section, and a sliding groove is provided on the retaining plate.

[0009] Both ends of the clamping strip are provided with bevels. A sliding rod is fixedly connected to the side of the clamping strip away from the bevel. A slider is fixedly connected to the end of the sliding rod away from the clamping strip. An elastic element is provided on the side of the slider away from the sliding rod.

[0010] Preferably, the support mechanism includes a connecting column, a hook fixedly connected to one side of the connecting column, a washer provided near the hook on the connecting column, a first connecting seat hinged to the bottom of the connecting column, a first fixing nail fixedly connected to the bottom of the first connecting seat, a first fixing bolt provided at the top of the connecting column, a connecting tube hinged to the end of the connecting column away from the first connecting seat, a second fixing bolt provided on the connecting tube, a connecting rod slidably connected in the connecting tube, a second connecting seat hinged to the end of the connecting rod away from the connecting tube, and a second fixing nail fixedly connected to the bottom of the second connecting seat.

[0011] Preferably, the number of locking holes is the same as the number of locking hooks, the locking holes and locking hooks are adapted to each other, and the position of the locking holes corresponds to the position of the gasket.

[0012] Preferably, the bevel is located on the side of the clamping strip closest to the second connecting section.

[0013] Preferably, the slider is slidably connected inside the groove.

[0014] Preferably, the elastic element is disposed inside the groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This prefabricated deep foundation pit support structure improves the stability of the retaining walls during use. After rain, the pressure of rainwater and soil on the retaining walls makes the joints between adjacent retaining walls more tightly connected, preventing rainwater from outside the foundation pit from seeping into the foundation pit through the joints between adjacent retaining walls, thus improving the waterproofing effect.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first-view structural schematic diagram of the present invention in its working state;

[0020] Figure 2This is a structural schematic diagram of the present invention from a second perspective of its working state;

[0021] Figure 3 This is a first-view structural schematic diagram of the present invention;

[0022] Figure 4 This is a structural schematic diagram of the present invention from a second perspective;

[0023] Figure 5 This is a partial cross-sectional view of the connection between adjacent retaining mechanisms of this utility model.

[0024] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A;

[0025] Figure 7 This is a schematic diagram of the support mechanism of this utility model;

[0026] Figure 8 This is a schematic diagram of the retaining mechanism of this utility model;

[0027] Figure 9 This is a partial cross-sectional view of the retaining mechanism of this utility model.

[0028] Figure 10 This utility model Figure 9 Enlarged structural diagram at point B;

[0029] Figure 11 This is a partial cross-sectional view of the retaining plate of this utility model;

[0030] Figure 12 This utility model Figure 11 Enlarged schematic diagram of the structure at point C;

[0031] Figure 13 This is a partial structural diagram of the pressure strip of this utility model.

[0032] In the diagram: 1. Support mechanism; 101. Connecting column; 102. Hook; 103. Washer; 104. First connecting seat; 105. First fixing nail; 106. First fixing bolt; 107. Connecting pipe; 108. Second fixing bolt; 109. Connecting rod; 110. Second connecting seat; 111. Second fixing nail; 2. Retaining mechanism; 21. Retaining plate; 211. Locking hole; 212. First connecting section; 213. Second connecting section; 214. Slide groove; 22. Pressure strip; 221. Inclined surface; 222. Slide rod; 223. Sliding block; 224. Elastic element. Detailed Implementation

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0035] like Figures 1 to 6 As shown, a prefabricated deep foundation pit support structure includes a support mechanism 1 and a retaining mechanism 2. There are multiple support mechanisms 1 and multiple retaining mechanisms 2. The retaining mechanism 2 is snapped onto one side of the support mechanism 1, and the multiple retaining mechanisms 2 are connected end to end.

[0036] like Figure 7 As shown, the support mechanism 1 includes a connecting column 101, a hook 102, a washer 103, a first connecting seat 104, a first fixing nail 105, a first fixing bolt 106, a connecting pipe 107, a second fixing bolt 108, a connecting rod 109, a second connecting seat 110, and a second fixing nail 111. A hook 102 is fixedly connected to one side of the connecting column 101. A washer 103 is provided on the connecting column 101 near the hook 102. The bottom of the connecting column 101 is hinged to the first connecting seat 104. The bottom of the first connecting seat 104 is fixedly connected to the first fixing nail 105. A first fixing bolt 106 is provided at the top of the connecting column 101. A connecting pipe 107 is hinged to the end of the connecting column 101 away from the first connecting seat 104. A second fixing bolt 108 is provided on the connecting pipe 107. A connecting rod 109 is slidably connected in the connecting pipe 107. A second connecting seat 110 is hinged to the end of the connecting rod 109 away from the connecting pipe 107. A second fixing nail 111 is fixedly connected to the bottom of the second connecting seat 110. In use, the first connecting seat 104 and the second connecting seat 110 are fixed to the bottom of the pit by the first fixing nail 105 and the second fixing nail 111, respectively.

[0037] like Figures 8 to 10 As shown, the retaining mechanism 2 includes a retaining plate 21 and a retaining strip 22, with the retaining plate 21 slidably connected to the retaining strip 22;

[0038] like Figures 11 to 12As shown, the retaining plate 21 has a locking hole 211, the number of locking holes 211 is the same as the number of hooks 102, the locking holes 211 are adapted to the hooks 102, the position of the locking hole 211 corresponds to the position of the gasket 103, a first connecting section 212 is provided on one side of the retaining plate 21, a second connecting section 213 is provided at the end of the retaining plate 21 away from the first connecting section 212, at adjacent retaining plates 21, the first connecting section 212 on the previous retaining plate 21 and the second connecting section 213 on the next retaining plate 21 are interlocked, and a sliding groove 214 is provided on the retaining plate 21;

[0039] like Figure 6 , Figure 10 , Figure 12 and Figure 13 As shown, both ends of the clamping strip 22 are provided with inclined surfaces 221. The inclined surfaces 221 are located on the side of the clamping strip 22 near the second connecting section 213. A sliding rod 222 is fixedly connected to the side of the clamping strip 22 away from the inclined surfaces 221. A slider 223 is fixedly connected to the end of the sliding rod 222 away from the clamping strip 22. The slider 223 is slidably connected inside the groove 214. An elastic element 224 is provided on the side of the slider 223 away from the sliding rod 222. The elastic element 224 is located inside the groove 214.

[0040] The work process is as follows:

[0041] S1. During use, the number of retaining mechanisms 2 and supporting mechanisms 1 can be adjusted as needed. Adjacent retaining plates 21 are connected to each other through the first connecting section 212 and the second connecting section 213.

[0042] S2. When the first connecting section 212 on a retaining plate 21 is inserted into the second connecting section 213 on an adjacent retaining plate 21, it is inserted from the inclined surface 221 on the clamping strip 22, the elastic element 224 contracts, the slider 223 slides in the groove 214, and the clamping strip 22 clamps and fixes the first connecting section 212 connected to the second connecting section 213 on a retaining plate 21.

[0043] S3. The retaining plate 21 is engaged with the hook 102 on the connecting column 101 through the locking hole 211. The retaining plate 21 can be limited and fixed by the first fixing bolt 106. The angle of the retaining plate 21 can be adjusted by rotating the connecting column 101 as needed.

[0044] S4. Slide the connecting rod 109 in the connecting pipe 107 and tighten the second fixing bolt 108 to fix the connecting rod 109. The first connecting seat 104 and the second connecting seat 110 are fixed to the bottom of the foundation pit by the first fixing nail 105 and the second fixing nail 111 respectively, to fix the retaining plate 21 and improve the stability of the retaining plate 21.

[0045] S5. After rain, rainwater outside the foundation pit will fall onto the retaining plate 21 along the inner wall of the foundation pit. As the amount of rainwater increases, the pressure of the rainwater and soil on the retaining plate 21 will cause the retaining plate 21 to deform slightly, making the first connecting section 212 and the second connecting section 213 on the adjacent retaining plates 21 more tightly connected. This prevents rainwater outside the foundation pit from seeping into the foundation pit along the inner wall of the foundation pit from the connection between the adjacent retaining plates 21, thereby improving the waterproofing effect.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A prefabricated deep foundation pit support structure, characterized in that: It includes a support mechanism (1) and a retaining mechanism (2), wherein the retaining mechanism (2) is snapped onto one side of the support mechanism (1), and multiple retaining mechanisms (2) are connected end to end; The retaining mechanism (2) includes a retaining plate (21), on which a retaining strip (22) is slidably connected; The retaining plate (21) is provided with a locking hole (211), a first connecting section (212) is provided on one side of the retaining plate (21), a second connecting section (213) is provided at the end of the retaining plate (21) away from the first connecting section (212), and a sliding groove (214) is provided on the retaining plate (21). Both ends of the clamping strip (22) are provided with inclined surfaces (221). A sliding rod (222) is fixedly connected to the side of the clamping strip (22) away from the inclined surface (221). A slider (223) is fixedly connected to the end of the sliding rod (222) away from the clamping strip (22). An elastic element (224) is provided on the side of the slider (223) away from the sliding rod (222).

2. The prefabricated deep foundation pit support structure according to claim 1, characterized in that: The support mechanism (1) includes a connecting column (101), a hook (102) is fixedly connected to one side of the connecting column (101), a gasket (103) is provided near the hook (102) on the connecting column (101), a first connecting seat (104) is hinged to the bottom of the connecting column (101), a first fixing nail (105) is fixedly connected to the bottom of the first connecting seat (104), and a first fixing bolt (105) is provided at the top of the connecting column (101). 6) A connecting pipe (107) is hinged to one end of the connecting column (101) away from the first connecting seat (104). A second fixing bolt (108) is provided on the connecting pipe (107). A connecting rod (109) is slidably connected in the connecting pipe (107). A second connecting seat (110) is hinged to one end of the connecting rod (109) away from the connecting pipe (107). A second fixing nail (111) is fixedly connected to the bottom of the second connecting seat (110).

3. The prefabricated deep foundation pit support structure according to claim 2, characterized in that: The number of the locking holes (211) is the same as the number of the locking hooks (102), the locking holes (211) are adapted to the locking hooks (102), and the position of the locking holes (211) corresponds to the position of the pad (103).

4. The prefabricated deep foundation pit support structure according to claim 1, characterized in that: The inclined surface (221) is located on the side of the clamping strip (22) near the second connecting section (213).

5. The prefabricated deep foundation pit support structure according to claim 1, characterized in that: The slider (223) is slidably connected inside the groove (214).

6. The prefabricated deep foundation pit support structure according to claim 1, characterized in that: The elastic element (224) is disposed inside the groove (214).

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