Deep foundation pit water stop structure

Abstract

The utility model discloses a deep foundation pit water stop structure, belongs to the technical field of deep foundation pits, aims at solving the problems that water stop and water diversion cannot be carried out on the bottom of a deep foundation pit, and construction and assembly are inconvenient, and comprises a bottom mounting plate, a water collecting groove is formed in the bottom in the bottom mounting plate, and a waterproof pile is arranged on the upper portion of the bottom mounting plate. A matching groove is formed in the bottom end of the waterproof pile, a limiting groove is formed in the waterproof pile at the upper part of the matching groove, a connecting mechanism is arranged on the waterproof pile, the waterproof pile is arranged at the top of the bottom mounting plate through the connecting mechanism, and a water stopping mechanism is arranged on the outer side of the waterproof pile; through the arrangement of the water stopping mechanism, in the construction work of the deep foundation pit, in cooperation with the arrangement of the bottom mounting plate and the waterproof pile, water stopping operation can be conducted on the bottom of the deep foundation pit, water accumulation at the bottom of the deep foundation pit is prevented, meanwhile, underground water in the side wall of the deep foundation pit can be drained and discharged, extrusion to the waterproof pile is avoided, and the construction efficiency is improved. And the stability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of deep foundation pit technology, specifically relating to a deep foundation pit water-stopping structure. Background Technology

[0002] Currently, with the continuous development of underground construction projects in my country, the construction technology of deep foundation pits is receiving increasing attention. Deep foundation pit construction typically requires dry conditions. However, during excavation, the aquifer is cut off, and the groundwater level is higher than the excavated surface, causing groundwater to continuously seep into the deep foundation pit from the sidewalls and bottom. This results in waterlogging, reducing the bearing capacity of the foundation and potentially leading to quicksand, piping, and slope instability, increasing construction difficulty. To reduce the impact of groundwater on construction, construction units usually install a water-stop curtain composed of cement mixing piles or high-pressure jet grouting piles to prevent groundwater leakage and ensure the safety of deep foundation pit construction.

[0003] A prior art patent, CN210797598U, describes a deep foundation pit water-stopping structure. This patent includes several concrete-cast water-stopping piles located on the inner wall of the deep foundation pit and interlocking with each other. Each water-stopping pile is embedded with several interconnected waterproof bodies for support. While this structure improves stability and reduces the impact of groundwater on deep foundation pit construction, it has the following shortcomings in practical use: Firstly, after installation, the device only stops water on the sidewalls of the deep foundation pit, not at the bottom. Secondly, it cannot drain groundwater from the sidewalls, which can lead to water accumulation and damage to the device over time. Thirdly, it cannot be assembled according to the specific construction conditions of the deep foundation pit, thus reducing its practicality.

[0004] Therefore, a deep foundation pit water-stopping structure is needed to solve the problems of existing technologies that cannot stop and divert water at the bottom of deep foundation pits and are inconvenient for construction and assembly. Utility Model Content

[0005] The purpose of this invention is to provide a deep foundation pit water-stopping structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deep foundation pit water-stopping structure, including a bottom mounting plate, a water collection groove provided at the bottom of the bottom mounting plate, a waterproof pile provided at the top of the bottom mounting plate, a matching groove provided at the bottom end of the waterproof pile, a limiting groove provided in the waterproof pile at the upper part of the matching groove, a connecting mechanism provided on the waterproof pile and located at the top of the bottom mounting plate through the connecting mechanism, and a water-stopping mechanism provided on the outside of the waterproof pile.

[0007] The water-stopping mechanism includes a casting block, which is matched with a waterproof pile and cast in concrete between the waterproof pile and the side wall of the deep foundation pit. A water inlet pipe is installed inside the casting block, and a connecting pipe is installed at the top of the water inlet pipe on the upper part of the casting block. A water outlet is connected to the casting block.

[0008] It should be noted in the plan that the waterproof piles are formed by cast-in-place reinforced concrete, and there are several waterproof piles. The several waterproof piles are arranged at intervals on the top of the bottom mounting plate through a connecting mechanism, and the space between the waterproof piles and the side wall of the deep foundation pit is filled by cast-in-place blocks.

[0009] It is worth noting that the water collection tank is connected to an external pump via a pipe, the water inlet pipe is connected to the water collection tank, and the water outlet is connected to the water inlet pipe.

[0010] Furthermore, it should be noted that the connecting mechanism includes an installation groove, which is aligned with the waterproof pile and located on the top of the bottom mounting plate. A bottom fixing block that matches the matching groove is fixedly connected inside the installation groove. A limiting steel bar is fixedly connected to the top of the bottom fixing block. The limiting steel bar is aligned with the limiting groove and is fixedly connected to the top of the waterproof pile with a connecting block. A connecting steel bar is fixedly connected to the top of the connecting block.

[0011] In a preferred embodiment, the bottom fixing block and the connecting block are matched and installed together, and the waterproof pile is installed by combining the connecting block and the connecting steel bar.

[0012] In a preferred embodiment, multiple limiting reinforcing bars are provided, and the multiple limiting reinforcing bars are provided on the upper part of the bottom fixing block and matched with the limiting groove. The connecting reinforcing bars are matched with the limiting groove.

[0013] Compared with the prior art, the deep foundation pit water-stopping structure provided by this utility model has at least the following beneficial effects:

[0014] (1) By setting up a water-stopping mechanism, in the construction of deep foundation pits, in conjunction with the setting of bottom mounting plates and waterproof piles, water-stopping operation can be carried out at the bottom of the deep foundation pit to prevent water accumulation at the bottom of the deep foundation pit. At the same time, groundwater in the side wall of the deep foundation pit can be diverted and discharged to avoid squeezing the waterproof piles, thereby improving stability.

[0015] (2) Through the connection mechanism, the waterproof piles can be combined and installed according to the conditions of deep foundation pit construction during the construction of deep foundation pit, so as to improve its water-stopping effect and practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the combined structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled and sectional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the waterproof pile structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the water-stopping mechanism of this utility model.

[0021] In the diagram: 1. Bottom mounting plate; 101. Water collection trough; 2. Waterproof pile; 201. Matching groove; 202. Limiting groove; 3. Connecting mechanism; 301. Mounting groove; 302. Bottom fixing block; 303. Limiting reinforcement; 304. Connecting block; 305. Connecting reinforcement; 4. Water-stopping mechanism; 401. Cast-in-place block; 402. Water inlet pipe; 403. Connecting pipe; 404. Water inlet. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Please see Figure 1-5 This utility model provides a deep foundation pit water-stopping structure, including a bottom mounting plate 1, a water collection groove 101 is provided at the bottom of the bottom mounting plate 1, a waterproof pile 2 is provided at the top of the bottom mounting plate 1, a matching groove 201 is provided at the bottom end of the waterproof pile 2, a limiting groove 202 is provided in the waterproof pile 2 at the top of the matching groove 201, a connecting mechanism 3 is provided on the waterproof pile 2 and is provided at the top of the bottom mounting plate 1 through the connecting mechanism 3, and a water-stopping mechanism 4 is provided on the outside of the waterproof pile 2.

[0024] The water-stopping mechanism 4 includes a casting block 401, which is matched with the waterproof pile 2 and is cast between the waterproof pile 2 and the side wall of the deep foundation pit by concrete. A water inlet pipe 402 is installed inside the casting block 401, and a connecting pipe 403 is installed at the top of the water inlet pipe 402 above the casting block 401. A water inlet 404 is connected to the casting block 401.

[0025] The bottom mounting plate 1 is cast with reinforced concrete at the bottom of the deep foundation pit using a template. Then, the waterproof piles 2 are installed by combining the matching groove 201 and the limiting groove 202 with the mounting groove 301 and the limiting steel bar 303 to form a protective enclosure for the deep foundation pit. Furthermore, the water inlet pipe 402 is connected to the water collection tank 101. Concrete blocks 401 are then poured between the deep foundation pit sidewall and the waterproof piles 2 to further improve the water-stopping effect. Simultaneously, water from the deep foundation pit sidewall can be introduced into the water collection tank 101 through the water inlet 404 and the water inlet pipe 402. The accumulated water in the water collection tank 101 is then drained through pipes and an externally connected pump to ensure that there is no water accumulation in the deep foundation pit.

[0026] Further as Figure 2 , Figure 3 and Figure 4 As shown, it is worth noting that the waterproof pile 2 is formed by cast-in-place reinforced concrete. Several waterproof piles 2 are provided and are arranged at intervals on the top of the bottom mounting plate 1 through the connecting mechanism 3. The gap between the waterproof pile 2 and the side wall of the deep foundation pit is filled by the casting block 401 to improve the water-stopping effect and support of the deep foundation pit.

[0027] Further as Figure 2 , Figure 3 and Figure 5 As shown, it is worth noting that the water collection tank 101 is connected to an external pump through a pipe, the water inlet pipe 402 is connected to the water collection tank 101, and the water inlet 404 is connected to the water inlet pipe 402, so as to drain the water in the side wall of the deep foundation pit and improve the stability of the deep foundation pit.

[0028] As can be seen from the above working process, by setting up the water-stopping mechanism 4, in the construction of the deep foundation pit, in conjunction with the bottom mounting plate 1 and the waterproof pile 2, the bottom of the deep foundation pit can be water-stopped to prevent water accumulation at the bottom of the deep foundation pit. At the same time, the groundwater in the side wall of the deep foundation pit can be diverted and discharged to avoid squeezing the waterproof pile 2, thereby improving stability.

[0029] Further as Figure 2 , Figure 3 and Figure 4As shown, it is worth noting that the connecting mechanism 3 includes an installation groove 301. The installation groove 301 is positioned on the top of the bottom mounting plate 1 and aligned with the waterproof pile 2. A bottom fixing block 302 that matches the matching groove 201 is fixedly connected inside the installation groove 301. A limiting steel bar 303 is fixedly connected to the top of the bottom fixing block 302. The limiting steel bar 303 is aligned with the limiting groove 202 and fixedly connected to the top of the waterproof pile 2. A connecting block 304 is fixedly connected to the top of the connecting block 304. A connecting steel bar 305 is fixedly connected to the top of the connecting block 304. The bottom fixing block 302 and the connecting block 304 are matched and the waterproof pile 2 is installed by combining the connecting block 304 and the connecting steel bar 305. Multiple limiting steel bars 303 are provided. Multiple limiting steel bars 303 are provided on the upper part of the bottom fixing block 302 and matched with the limiting groove 202. The connecting steel bar 305 is matched with the limiting groove 202.

[0030] Under the conditions of deep foundation pit construction, the waterproof piles 2 can be combined and installed by matching the connecting block 304 and the connecting steel bar 305 with another set of waterproof piles 2, so as to adapt to the construction work of deep foundation pits of different depths, improve the practicality of the device, and ensure the stability of use.

[0031] The following working process is described in this solution: When this device is used, firstly, the bottom mounting plate 1 is cast into shape with reinforced concrete at the bottom of the deep foundation pit using a template. Then, the waterproof pile 2 is installed by matching the mounting groove 301 and the limiting groove 202 with the matching groove 201 and the limiting steel bar 303 to form a enclosure for the deep foundation pit. Furthermore, the water inlet pipe 402 is connected to the water collection tank 101. Then, concrete is poured between the side wall of the deep foundation pit and the waterproof pile 2 to form a casting block 401, which further improves the water-stopping effect. At the same time, the water in the side wall of the deep foundation pit can be introduced into the water collection tank 101 through the water inlet 404 and the water inlet pipe 402. The water in the collection tank 101 is drained through pipes and externally connected pumps to ensure that there is no water accumulation in the deep foundation pit. At the same time, depending on the construction conditions of the deep foundation pit, the waterproof piles 2 can be combined and installed by matching the connecting block 304 and the connecting steel bar 305 with another set of waterproof piles 2, so as to adapt to the construction work of deep foundation pits of different depths, improve the practicality of the device, and ensure the stability of use. In addition, the additional cast block 401 and the connected water pipe 402 ensure that the device always maintains the water-stopping effect.

[0032] In summary: By setting up the water-stopping mechanism 4, in conjunction with the bottom mounting plate 1 and the waterproof pile 2 during the construction of deep foundation pits, water-stopping operations can be performed at the bottom of the deep foundation pit to prevent water accumulation. At the same time, groundwater in the sidewalls of the deep foundation pit can be diverted and discharged to avoid squeezing the waterproof pile 2, thereby improving stability. Through the set connection mechanism 3, the waterproof pile 2 can be combined and installed according to the construction conditions of the deep foundation pit during construction to improve its water-stopping effect and practicality.

Claims

1. A deep foundation pit water-stopping structure, comprising a bottom mounting plate (1), characterized in that: A water collection trough (101) is provided at the bottom of the bottom mounting plate (1), a waterproof pile (2) is provided on the upper part of the bottom mounting plate (1), a matching groove (201) is provided at the bottom end of the waterproof pile (2), a limiting groove (202) is provided in the upper part of the matching groove (201) inside the waterproof pile (2), a connecting mechanism (3) is provided on the waterproof pile (2) and is provided on the top of the bottom mounting plate (1) through the connecting mechanism (3), and a water-stopping mechanism (4) is provided on the outside of the waterproof pile (2); The water-stopping mechanism (4) includes a casting block (401), which is matched with the waterproof pile (2) and is cast between the waterproof pile (2) and the side wall of the deep foundation pit by concrete. A water inlet pipe (402) is provided inside the casting block (401), and a connecting pipe (403) is provided on the top of the water inlet pipe (402) above the casting block (401). A water inlet (404) is connected to the casting block (401).

2. The deep foundation pit water-stopping structure according to claim 1, characterized in that: The waterproof pile (2) is formed by casting reinforced concrete. Several waterproof piles (2) are provided. Several waterproof piles (2) are arranged at intervals on the top of the bottom mounting plate (1) through the connecting mechanism (3). The waterproof piles (2) are filled with casting blocks (401) between them and the side wall of the deep foundation pit.

3. The deep foundation pit water-stopping structure according to claim 1, characterized in that: The water collection tank (101) is connected to an external pump via a pipe, the water inlet pipe (402) is connected to the water collection tank (101), and the water inlet (404) is connected to the water inlet pipe (402).

4. The deep foundation pit water-stopping structure according to claim 1, characterized in that: The connecting mechanism (3) includes an installation groove (301), which is aligned with the waterproof pile (2) and located on the top of the bottom mounting plate (1). A bottom fixing block (302) that matches the matching groove (201) is fixedly connected in the installation groove (301). A limiting steel bar (303) is fixedly connected to the top of the bottom fixing block (302). The limiting steel bar (303) is aligned with the limiting groove (202) and fixedly connected to the top of the waterproof pile (2). A connecting block (304) is fixedly connected to the top of the connecting block (304). A connecting steel bar (305) is fixedly connected to the top of the connecting block (304).

5. A deep foundation pit water-stopping structure according to claim 4, characterized in that: The bottom fixing block (302) and the connecting block (304) are matched and installed together, and the waterproof pile (2) is installed by combining the connecting block (304) and the connecting steel bar (305).

6. The deep foundation pit water-stopping structure according to claim 4, characterized in that: Multiple limiting reinforcing bars (303) are provided, and multiple limiting reinforcing bars (303) are provided on the upper part of the bottom fixing block (302) and matched with the limiting groove (202). The connecting reinforcing bars (305) and the limiting groove (202) are matched.

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