Supporting structure of subway tunnel foundation pit

Abstract

The utility model relates to the technical field of subway tunnel construction, and discloses a subway tunnel foundation pit supporting structure which comprises a bottom plate and a side supporting plate, a stabilizing mechanism is arranged in the bottom plate, and a limiting mechanism is arranged in the side supporting plate. Through the arrangement of a vertical block, a rotating rod and a rotating block, a side supporting plate can be conveniently rotated, a bottom plate and the side supporting plate can be conveniently attached, so that transportation work is facilitated, by rotating a threaded column, a pushing block can be conveniently moved, a lifting plate and an inserting rod can be conveniently moved upwards, and limiting work can be conveniently conducted on the rotating block and the side supporting plate; through arrangement of a first bolt, the stabilizing block can be conveniently limited, so that supporting work of the side supporting plate is completed, supporting of a foundation pit is facilitated, through arrangement of a clamping groove and a second positioning groove, positioning of a Z-shaped plate is facilitated, and through cooperation of the second bolt, the supporting work of the Z-shaped plate is facilitated. And the bottom plate and the side supporting plates in the folded state can be conveniently limited.

Description

Technical Field

[0001] The utility model relates to the technical field of subway tunnel construction, in particular to a supporting structure for a subway tunnel foundation pit. Background Art

[0002] More and more cities are starting to build subways. As the number of buildings increases, the depth of foundation pits is also getting deeper. During foundation pit projects, excavation of the foundation pit soil will cause changes in the stress field, resulting in deformation of the surrounding soil and affecting surrounding buildings and pipelines. Therefore, the foundation pit needs to be supported to support the tunnel structure and prevent collapse.

[0003] According to the description of a support structure for a subway tunnel foundation pit disclosed on the patent website (authorization publication number: CN 217078779U), "The utility model provides a support structure for a subway tunnel foundation pit, comprising a bottom plate located at the bottom of the foundation pit, a clamping block being provided at one side of the bottom plate, a plurality of the clamping blocks being provided and arranged parallel to each other, the clamping blocks being clamped to clamping grooves distributed on the lower sides of the side support plates, the side support plates being provided with side positioning holes, the bottom plates being provided with bottom positioning holes, the side positioning holes on the side support plates being passed through positioning cones and fixed to the side walls of the foundation pit, the side support plates being fixed by passing the positioning cones through the side positioning holes, and the bottom plates being fixed by passing the positioning cones through the bottom positioning holes, thereby achieving the purpose of fixing the positions of the side support plates and the bottom plate, and adjacent side support plates being clamped to each other by clamping grooves and clamping strips, and the multiple side support plates being clamped to each other by this design."

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] During use, the utility model arranges a plurality of side support plates in a mutually clipped manner, and the side support plates and the bottom plate are conveniently transported through a modular design. However, during long-term use, since the surface of the side support plates is fixedly installed with a leakage water collection frame, and the surface of the bottom plate is fixedly installed with an anti-falling block, it is inconvenient to stack the side support plates and the bottom plate when transporting them, so a large transportation space is required, which reduces the transportation efficiency. Therefore, it is necessary to improve a support structure for a subway tunnel foundation pit to solve the above problem. Utility Model Content

[0006] The purpose of the utility model is to provide a supporting structure for a subway tunnel foundation pit to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a support structure for a subway tunnel foundation pit, comprising a bottom plate and a side support plate, wherein a stabilizing mechanism is provided inside the bottom plate, and a limiting mechanism is provided inside the side support plate.

[0008] The top of the lifting plate is fixedly mounted on the bottom plate, and the bottom plate is slidingly mounted on the bottom plate. The push block is slidably mounted on the bottom plate, and the lifting plate is slidably mounted on the bottom plate. The top of the lifting plate is fixedly mounted on the top of the lifting plate, and the lifting plate is slidably mounted on the bottom plate. A storage groove is provided inside the bottom plate, and a stabilizing block is rotatably mounted inside the storage groove, and a buckle groove is provided inside the stabilizing block, and a first bolt is installed on the internal thread of the stabilizing block to facilitate the supporting work of the side support plate, thereby supporting the foundation pit.

[0009] Preferably, a groove is provided inside the rotating block at a position corresponding to the insertion rod, and the insertion rod is slidably installed in the groove, so as to facilitate the limiting work of the rotating block and the side support plate.

[0010] Preferably, a threaded hole is provided inside the side support plate at a position corresponding to the first bolt, and the first bolt is threadedly installed in the threaded hole, so as to facilitate the limiting work of the stabilizing block.

[0011] Preferably, the limiting mechanism includes a water leakage hole, which is provided inside the side support plate, and a first positioning groove is provided inside the side support plate, a Z-shaped plate is slidably installed inside the first positioning groove, a second bolt is installed on the internal thread of the Z-shaped plate, and the second bolt is threadedly installed with the side support plate, a card slot is provided inside the side support plate, and the Z-shaped plate is slidably installed with the card slot, and a second positioning groove is provided inside the bottom plate, and the Z-shaped plate is slidably installed with the second positioning groove, which is convenient for guiding the seeping water and facilitating the limiting of the bottom plate and the side support plate.

[0012] Preferably, a threaded hole is opened inside the base plate at a position corresponding to the second bolt, and the second bolt is threadedly installed in the threaded hole, which is convenient for limiting the Z-shaped plate and thus facilitating the limiting of the side support plate.

[0013] Compared with the existing technology, the utility model provides a support structure for a subway tunnel foundation pit, which has the following beneficial effects:

[0014] 1. The support structure of the subway tunnel foundation pit is convenient for rotating the side support plate by means of the provided stabilizing mechanism during use, and convenient for fitting the bottom plate and the side support plate, thereby facilitating transportation. By rotating the threaded column, the push block is convenient for moving, thereby facilitating the upward movement of the lifting plate and the insertion rod, and convenient for limiting the position of the rotating block and the side support plate. By means of the provided buckle groove, the stabilizing block is convenient for rotating, and by means of the provided first bolt, the stabilizing block is convenient for limiting the position, thereby completing the support work of the side support plate and facilitating the support of the foundation pit.

[0015] 2. The support structure of the subway tunnel foundation pit is convenient for positioning the Z-type plate through the provided limiting mechanism during use, through the provided card slot and the second positioning slot, and with the cooperation of the second bolt, it is convenient to limit the folded bottom plate and the side support plate, thereby ensuring stability during transportation. When supporting, the provided first positioning slot facilitates positioning of the Z-type plate, and with the cooperation of the second bolt, it facilitates installation of the Z-type plate, guiding the water seeping out of the leakage hole to prevent the water from falling on the surface of the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0017] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model in a folded state;

[0019] Figure 3 This is a schematic diagram of the position relationship of the rotating rod of the utility model;

[0020] Figure 4 This is a schematic diagram of the position relationship of the lifting plate of the utility model;

[0021] Figure 5 This is a schematic diagram of the position relationship of the stabilizing blocks of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0023] Figure 7 This is a schematic diagram of the position relationship of the second positioning groove of the utility model.

[0024] In the figure: 1. Base plate; 2. Side support plate; 3. Stabilizing mechanism; 301. Vertical block; 302. Rotating rod; 303. Rotating block; 304. Threaded column; 305. Push block; 306. Lifting plate; 307. Inserting rod; 308. Receiving slot; 309. Stabilizing block; 310. Buckle slot; 311. First bolt; 4. Limiting mechanism; 401. Leakage hole; 402. First positioning slot; 403. Z-shaped plate; 404. Second bolt; 405. Card slot; 406. Second positioning slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] Example 1:

[0028] See also Figure 1-5 The utility model provides a technical solution: a support structure for a subway tunnel foundation pit, comprising a bottom plate 1 and a side support plate 2, wherein a stabilizing mechanism 3 is provided inside the bottom plate 1, and a limiting mechanism 4 is provided inside the side support plate 2.

[0029] When the jack is in the upright position, the jack 301 is fixed on the top of the base plate 1, and the jack 302 is fixed on the inside of the upright block 301, and the jack 303 is fixed on the outside of the jack 302, and the jack 303 is fixed on the side support plate 2. The internal thread of the base plate 1 is provided with a threaded column 304, and one end of the threaded column 304 is rotatably provided with a push block 305, which is slidably installed on the push block 305 and the base plate 1. The internal sliding installation of the base plate 1 is provided with a lifting plate 306, and the push block 305 is slidably installed on the lifting plate 306. The top of the lifting plate 306 is fixedly installed with an insertion rod 307, and the insertion rod 307 is slidably installed on the base plate 1. A storage groove 308 is provided inside the base plate 1, and a stabilizing block 309 is rotatably installed inside the storage groove 308. A buckle groove 310 is provided inside the stabilizing block 309, and a first bolt 311 is installed on the internal thread of the stabilizing block 309 to facilitate the support work of the side support plate 2, thereby supporting the foundation pit.

[0030] Furthermore, a groove is provided inside the rotating block 303 at a position corresponding to the insertion rod 307 , and the insertion rod 307 is slidably installed in the groove, so as to facilitate the limiting work of the rotating block 303 and the side support plate 2 .

[0031] Furthermore, a threaded hole is opened inside the side support plate 2 at a position corresponding to the first bolt 311 , and the first bolt 311 is threadedly installed in the threaded hole, so as to facilitate the limiting work of the stabilizing block 309 .

[0032] Example 2:

[0033] See also Figure 6-7 , and combined with Example 1, it is further obtained that the limiting mechanism 4 includes a water leakage hole 401, which is opened inside the side support plate 2, and a first positioning groove 402 is opened inside the side support plate 2, and a Z-shaped plate 403 is slidably installed inside the first positioning groove 402, and a second bolt 404 is threadedly installed on the internal thread of the Z-shaped plate 403, and the second bolt 404 is threadedly installed with the side support plate 2, and a card groove 405 is opened inside the side support plate 2, and the Z-shaped plate 403 is slidably installed with the card groove 405, and a second positioning groove 406 is opened inside the bottom plate 1, and the Z-shaped plate 403 is slidably installed with the second positioning groove 406, which is convenient for guiding the seeping water and facilitating the limiting of the bottom plate 1 and the side support plate 2.

[0034] Furthermore, a threaded hole is opened inside the base plate 1 at a position corresponding to the second bolt 404, and the second bolt 404 is threadedly installed in the threaded hole, which facilitates the limiting work of the Z-shaped plate 403, thereby facilitating the limiting of the side support plate 2.

[0035] In actual operation, when this device is used, the side support plate 2 is rotated by the provided vertical block 301, the rotating rod 302 and the rotating block 303, so that the bottom plate 1 and the side support plate 2 are fitted together, and the Z-shaped plate 403 is positioned by the provided card slot 405 and the second positioning slot 406. With the cooperation of the second bolt 404, the bottom plate 1 and the side support plate 2 in the folded state are limited, which is convenient for transportation. The operation is repeated to release the limit of the side support plate 2, and the side support plate 2 is rotated so that the side support plate 2 is fitted with the foundation pit. By rotating the threaded column 304, the push block 305 is pushed Move, so that the lifting plate 306 and the insertion rod 307 move upward, limit the rotating block 303, thereby completing the limitation of the side support plate 2, and by depressing the buckle groove 310, the stabilizing block 309 is rotated. With the cooperation of the first bolt 311, the limiting of the stabilizing block 309 is completed, thereby supporting the side support plate 2, facilitating the support work of the foundation pit, and the first positioning groove 402 is set to position the Z-type plate 403. With the cooperation of the second bolt 404, the Z-type plate 403 is installed to guide the water seeping out of the leakage hole 401 to prevent the water from falling on the surface of the bottom plate 1.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A support structure for a subway tunnel foundation pit, comprising a bottom plate (1) and a side support plate (2), characterized in that: The bottom plate (1) is provided with a stabilizing mechanism (3) inside, the stabilizing mechanism (3) comprises a vertical block (301), the vertical block (301) is fixedly mounted on the top of the bottom plate (1), a rotating rod (302) is rotatably mounted inside the vertical block (301), a rotating block (303) is fixedly mounted outside the rotating rod (302), the rotating block (303) is fixedly mounted on the side support plate (2), a threaded column (304) is threadedly mounted inside the bottom plate (1), a push block (305) is rotatably mounted on one end of the threaded column (304), the push block (305) is slidably mounted on the bottom plate (1), and the bottom plate (1) is fixedly mounted on the bottom plate (1). ) is slidably installed inside the lifting plate (306), the pushing block (305) is slidably installed with the lifting plate (306), the top of the lifting plate (306) is fixedly installed with an insertion rod (307), the insertion rod (307) is slidably installed with the bottom plate (1), a receiving groove (308) is provided inside the bottom plate (1), a stabilizing block (309) is rotatably installed inside the receiving groove (308), a buckle groove (310) is provided inside the stabilizing block (309), a first bolt (311) is threadedly installed on the inside of the stabilizing block (309), and a limiting mechanism (4) is provided inside the side support plate (2).

2. The supporting structure for a subway tunnel foundation pit according to claim 1, characterized in that: A groove is provided inside the rotating block (303) at a position corresponding to the insertion rod (307), and the insertion rod (307) is slidably installed in the groove.

3. The supporting structure for a subway tunnel foundation pit according to claim 1, characterized in that: A threaded hole is provided inside the side support plate (2) at a position corresponding to the first bolt (311), and the first bolt (311) is threadedly installed in the threaded hole.

4. The supporting structure for a subway tunnel foundation pit according to claim 1, characterized in that: The limiting mechanism (4) comprises a water leakage hole (401), the water leakage hole (401) is provided inside the side support plate (2), a first positioning groove (402) is provided inside the side support plate (2), a Z-shaped plate (403) is slidably installed inside the first positioning groove (402), a second bolt (404) is threadedly installed inside the Z-shaped plate (403), the second bolt (404) is threadedly installed with the side support plate (2), a clamping groove (405) is provided inside the side support plate (2), the Z-shaped plate (403) is slidably installed with the clamping groove (405), a second positioning groove (406) is provided inside the bottom plate (1), and the Z-shaped plate (403) is slidably installed with the second positioning groove (406).

5. The supporting structure for a subway tunnel foundation pit according to claim 4, characterized in that: A threaded hole is provided inside the bottom plate (1) at a position corresponding to the second bolt (404), and the second bolt (404) is threadedly installed in the threaded hole.

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