Plugging device for cooperation of deep foundation pit insertion construction and local dewatering and drainage

Abstract

According to the plugging device for cooperation of deep foundation pit penetrating construction and local dewatering and drainage, a steel plate water stop flange (2) comprises an upper steel plate water stop flange (201) and a lower steel plate water stop flange (202), and the upper steel plate water stop flange (201) is welded to the top of a steel pipe cylinder (1); the lower steel plate water stop flange (202) is welded at the bottom of the steel pipe cylinder (1); an expansion water stop ring (3) is mounted on the inner side of the top of the steel plate water stop flange (2); and a steel plate plugging plate (4) is welded at the top of the steel plate water stop flange (2). Seepage water is collected and drained to the bottom of a foundation pit through the flow guide pipe, concentrated pumping and drainage are conducted through the device, large-area waterproof construction is guaranteed, meanwhile, later-stage binding of a protective layer and raft reinforcing steel bars is conducted, pumping and drainage are stopped when later-stage concrete pouring is conducted, and after the cylinder is poured through micro-expansion concrete, the foundation pit is formed. And a steel plate plugging plate is used for welding and sealing, and then large-area raft plate pouring is conducted.

Description

TECHNICAL FIELD

[0001] The utility model relates to building technical field especially a kind of plugging device of deep foundation pit insertion construction cooperation local drainage. BACKGROUND

[0002] In civil engineering construction, especially in underground engineering and deep foundation pit engineering, the pre-period well point dewatering controls underground water level and prevents underground water leakage, which is an important link to ensure the safety and stability of the project. To achieve effective water stop effect, the water level has been lowered to 0.5-1.5m below the standard surface of the foundation pit bottom in the pre-period. However, due to the design of most buildings, including water sump, elevator pit and local settlement raft structure, the local foundation pit needs to be excavated to 2-3m below the bottom elevation of the large area foundation pit. Due to the complexity of geological conditions during foundation pit excavation, the existence of surrounding building groups and complex construction load, the overall water level cannot be lowered too much. In actual construction, due to the difference in foundation pit, the local water level is higher compared to the large area pit bottom. After large-area excavation of the local foundation pit, the confined water continuously seeps out from the soil layer joints, affecting construction and posing certain safety risks.

[0003] Due to the uncertainty of soil water seepage points, traditional water stop techniques such as grouting, filling and water stop capsules can seal local pores, but cannot seal all soil pores and have unstable effects, poor adaptability and difficulty in meeting the water stop requirements under complex geological conditions.

[0004] To solve this problem and further improve the water stop effect and construction efficiency, we propose a drainage type water guide and drainage construction technology scheme. This device further improves the water stop effect and can be inserted for foundation pit excavation, waterproofing and other construction, with the advantages of convenient construction, strong adaptability and other advantages, providing a more reliable water stop solution for underground engineering construction, especially suitable for controlling underground water and confined water under complex geological conditions, with important practical significance and application value. CONTENT OF THE UTILITY MODEL

[0005] To solve the problems in the existing technology, the utility model provides a drainage and water stop device with simple structure, fast construction, low production cost, good drainage effect and no impact on engineering construction. The plugging device for deep foundation pit insertion construction and local drainage mainly includes four parts, consisting of filter steel pipe cartridge, steel plate water stop flange, expansion water stop ring and steel plate sealing plate. The seepage water is collected and drained to the bottom of the foundation pit through the flow guide pipe. The device ensures large-area waterproof construction, and simultaneously binds the protection layer and raft reinforcement. When pouring concrete in the later period, stop the drainage, pour the cartridge with micro-expansion concrete, weld and seal with the steel plate sealing plate, and then pour the large-area raft.

[0006] The utility model solves technical problems thereof adopts the technical scheme that:

[0007] A kind of plugging device of deep foundation pit insertion construction cooperation local drainage reduction, including steel pipe flower tube (1), steel plate water stop flange (2), expansion water stop ring (3) and steel plate plugging plate (4), wherein:the steel plate water stop flange (2) includes upper steel plate water stop flange (201) and lower steel plate water stop flange (202), the upper steel plate water stop flange (201) is welded on the top of steel pipe flower tube (1);The lower steel plate water stop flange (202) is welded on the bottom of steel pipe flower tube (1);Expansion water stop ring (3) is installed in the top inner side of the steel plate water stop flange (2);Steel plate plugging plate (4) is welded on the top of the steel plate water stop flange (2).

[0008] The utility model further has the following additional technical features:

[0009] As the utility model technical scheme is further specifically optimized: the side of steel pipe flower tube (1) is provided with several hollow water seepage strips (101), and the water seepage strip (101) is spaced distribution.

[0010] As the utility model technical scheme is further specifically optimized: the upper steel plate water stop flange (201) and lower steel plate water stop flange (202) are all sheet circular ring shape;The inner diameter of the upper steel plate water stop flange (201) and lower steel plate water stop flange (202) is equal to the outer diameter of the steel plate water stop flange (2).

[0011] As the utility model technical scheme is further specifically optimized: the steel plate plugging plate (4) is sheet circular shape;The outer diameter of the steel plate plugging plate (4) is equal to the inner diameter of the top of steel pipe flower tube (1).

[0012] Compared with prior art, the utility model has the advantages that:

[0013] The utility model can accelerate construction progress, insertion construction, reduce construction cost, construction is fast and simple, water diversion, water stop effect is good, processing production cost is low, if special working condition is encountered, can be combined with multiple water stop measures to achieve the best water stop effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model cross section solid structure schematic diagram shows;

[0015] Figure 2 The utility model plugging device disassembly structure schematic diagram shows;

[0016] Figure 3 The utility model plugging device structure schematic diagram shows;

[0017] Figure 4The utility model discloses a plugging principle structure schematic diagram.

[0018] Mark explanation: steel pipe flower barrel 1, steel plate water stop wing 2, expansion water stop ring 3 and steel plate plugging plate 4. DETAILED DESCRIPTION

[0019] The exemplary embodiments disclosed by the utility model will be described in more detail below with reference to the drawings.

[0020] Embodiment 1

[0021] A kind of deep foundation pit penetrates construction cooperation local falling drainage's plugging device, including steel pipe flower barrel 1, steel plate water stop wing 2, expansion water stop ring 3 and steel plate plugging plate 4.Due to high soil sand content, cannot plugging all soil pore, using drainage groove 5, flow guide pipe, seepage is concentrated and guided to the device place concentrated pumping, and in slot, flow guide pipe, plugging device, gap place do corresponding waterproof measures, reach final water diversion, water stop effect.

[0022] The side of the steel pipe flower barrel 1 is provided with a plurality of water seepage strips 101 in a hollow shape, and the water seepage strips 101 are distributed in a spaced manner.

[0023] The steel plate water stop wing 2 includes an upper steel plate water stop wing 201 and a lower steel plate water stop wing 202, and both the upper steel plate water stop wing 201 and the lower steel plate water stop wing 202 are in the shape of a thin circular ring; the upper steel plate water stop wing 201 is welded to the top of the steel pipe flower barrel 1; the lower steel plate water stop wing 202 is welded to the bottom of the steel pipe flower barrel 1; and the inner diameters of the upper steel plate water stop wing 201 and the lower steel plate water stop wing 202 are equal to the outer diameter of the steel plate water stop wing 2.

[0024] An expansion water stop ring 3 is mounted to the inner side of the top of the steel plate water stop wing 2; when not subjected to water pressure, the outer diameter of the expansion water stop ring 3 is slightly smaller than the inner diameter of the steel pipe flower barrel 1; when water pressure acts on the water stop ring, the water stop ring expands, the outer diameter increases, and thus the inner wall of the steel pipe flower barrel 1 is tightly combined, achieving the water stop effect.

[0025] A steel plate plugging plate 4 is welded to the top of the steel plate water stop wing 2, and the steel plate plugging plate 4 is in the shape of a thin circular ring; the outer diameter of the steel plate plugging plate 4 is equal to the inner diameter of the top of the steel pipe flower barrel 1.

[0026] Embodiment 2

[0027] The process flow of the plugging device for deep foundation pit penetration construction cooperation local falling drainage is as follows:

[0028] The construction process of the plugging device penetrating the construction of the local drainage and the construction of the plugging device is as follows:

[0029] Embodiment 3

[0030] The construction process of the plugging device penetrating the construction of the local drainage and the construction of the plugging device is as follows:

[0031] (1) The plugging device and the guide pipe are manufactured: the diameter of the plugging device and the guide pipe and the number of side wall openings are determined according to the size of the foundation pit, the diameter of the guide pipe and the water seepage.

[0032] (2) The drainage groove 5 is excavated: according to the water seepage, the drainage groove 5 is excavated in the middle of the side wall of the foundation pit or the pile cap, and the drainage groove 5 is excavated along the side wall to the plugging device at the bottom of the foundation pit or the pile cap.

[0033] (3) The drainage groove 5 and the guide pipe are laid in the drainage groove 5: the water-stopping material is laid in the drainage groove 5, and the waterproof roll is laid after the water-stopping material is solidified.

[0034] (4) The guide pipe and the plugging device are installed: the guide pipe and the plugging device are placed in the pre-excavated drainage groove 5, and the water-stopping ring at the connection should be tightly sleeved.

[0035] (5) The waterproof concrete 6 is covered: the exposed surface of the pile cap and the drainage groove 5 is covered with the waterproof concrete 6, and the surface is smooth.

[0036] (6) The plugging device is waterproofed: the waterproof roll is laid around the plugging device, and the cold oil paste is used to reinforce and seal the edge of the pile head and the edge of the plugging device.

[0037] (7) The water pumping device is installed: the water pump and other water pumping devices are placed in the plugging device, and the accumulated water in the plugging device is pumped out at regular intervals.

[0038] The device can adjust the diameter, the number and the length of the device according to the size of the foundation pit, the diameter of the guide pipe and the water seepage, and is suitable for different intensities and depths of underground water and confined water seepage problems.

[0039] The detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

Claims

1. A plugging device for deep foundation pit insertion construction in cooperation with local water drainage reduction, characterized in that: The utility model provides a steel pipe flower cylinder (1), steel plate water stop wing board (2), expansion water stop ring (3) and steel plate sealing plate (4) are included, wherein: steel plate water stop wing board (2) includes upper steel plate water stop wing board (201) and lower steel plate water stop wing board (202), upper steel plate water stop wing board (201) is welded on the top of steel pipe flower cylinder (1), lower steel plate water stop wing board (202) is welded on the bottom of steel pipe flower cylinder (1), the inside of the top of steel plate water stop wing board (2) is installed with expansion water stop ring (3), the top of steel plate water stop wing board (2) is welded with steel plate sealing plate (4).

2. The plugging device for deep foundation pit penetration construction and local dewatering and drainage according to claim 1, characterized in that: The side of the steel pipe flower cylinder (1) is provided with a plurality of hollow water permeation strips (101), which are distributed in a spaced manner.

3. The plugging device for deep foundation pit penetration construction and local dewatering and drainage according to claim 1, characterized in that: The upper steel plate water stop wing board (201) and the lower steel plate water stop wing board (202) are both in the shape of a thin circular ring, and the inner diameter of the upper steel plate water stop wing board (201) and the lower steel plate water stop wing board (202) is equal to the outer diameter of the steel plate water stop wing board (2).

4. The plugging device for deep foundation pit penetration construction and local dewatering and drainage according to claim 1, characterized in that: The steel plate sealing plate (4) is in the shape of a thin circular ring, and the outer diameter of the steel plate sealing plate (4) is equal to the inner diameter of the top of the steel pipe flower cylinder (1).

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