Pile tube well dewatering device adopting PC construction method

Abstract

A PC construction method pile tube well dewatering device comprises a steel pipe, a steel plate, a water pumping pipe, a limiting frame, a water pump, a drill bit and a motor, the steel pipe is of a cylindrical structure, the two sides of the steel pipe are fixedly connected with the steel plate to form a PC construction method pile body structure, the upper end of the steel pipe is welded to the limiting frame, and a plurality of water permeable holes are formed in the lower end of the steel pipe; the upper end of the water pumping pipe is connected with the water pump, the water pumping pipe is installed in the steel pipe through the limiting frame, the drill bit is installed at the bottom of the water pumping pipe, and the motor is arranged in the lower end of the water pumping pipe and connected with the drill bit. On the basis of a traditional PC construction method pile, the excavation water pumping device is combined, effective dewatering and water stopping around the foundation pit are achieved, and the excavation water pumping device is particularly suitable for the stratum environment with high water permeability and facilitates improvement of safety and stability of foundation pit construction.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of bridge foundation pit construction relates to a PC method pile pipe well precipitation device. BACKGROUND

[0002] In the process of foundation pit construction, especially the construction of bridge pier foundation pit, the problem of accumulated water in the foundation pit has always been one of the important factors affecting the construction progress and quality. Especially in the stratum with strong permeability, the groundwater seepage phenomenon is more serious. If the water level in the foundation pit cannot be effectively controlled, not only will it increase the difficulty of construction, but also may cause safety hazards such as foundation pit collapse. Therefore, the foundation pit dewatering and water stopping measures have become one of the key links to ensure the smooth construction.

[0003] The traditional foundation pit dewatering method includes open drainage method and well point dewatering method, but under complex hydrogeological conditions, it is often difficult to achieve efficient dewatering effect. As a commonly used foundation pit supporting structure, PC method pile can form an effective water stopping barrier around the foundation pit, but its water stopping effect is limited in the stratum with strong permeability, and it cannot directly solve the problem of accumulated water in the foundation pit. Therefore, it is necessary to further optimize the structure on the basis of the existing PC method pile technology, increase the dewatering function, and improve its adaptability under complex geological conditions to ensure the safety and efficiency of construction. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a PC method pile pipe well precipitation device, which realizes effective dewatering and water stopping around the foundation pit on the basis of the traditional PC method pile, especially suitable for the stratum environment with strong permeability, which helps to improve the safety and stability of the foundation pit construction.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A PC method pile pipe well precipitation device, comprising a steel pipe, a steel plate, a water pumping pipe, a limiting frame, a water pump, a drill bit and a motor, the steel pipe is a cylindrical structure, the steel pipe is fixedly connected with the steel plate on both sides to form a PC method pile main body structure, the upper end of the steel pipe is welded with the limiting frame, and the lower end of the steel pipe is provided with a plurality of water permeable holes; the upper end of the water pumping pipe is connected with the water pump, the water pumping pipe is installed in the steel pipe through the limiting frame, the bottom of the water pumping pipe is provided with the drill bit, and the motor is arranged in the lower end of the water pumping pipe; the motor is connected with the drill bit.

[0007] Further, the lower end of the water pumping pipe is provided with a water filter membrane.

[0008] The utility model discloses a beneficial effect mainly shows: have the characteristics of realizing effective precipitation and water stop in the extremely strong water-permeable foundation pit around, the lower part of steel pipe pile is provided with water-permeable hole, is provided with water pump inside, realizes timely and continuous precipitation's function through water pump. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural diagram of PC method pile pipe well precipitation device.

[0010] Figure 2 It is a structural diagram of excavation system.

[0011] Figure 3 It is a structural diagram of precipitation system.

[0012] The figure mark is: 1 is steel pipe, 101 is water-permeable hole, 2 is steel sheet, 3 is water pump, 301 is filter membrane, 4 is spacing frame, 5 is water pump, 6 is underground water, 7 is soil body, 8 is drill bit, 9 is motor. DETAILED DESCRIPTION

[0013] The utility model will be further described below in connection with the drawings.

[0014] Reference Figure 1 A kind of PC method pile pipe well precipitation device, including steel pipe 1, steel sheet 2, water pump 3, spacing frame 4, water pump 5, drill bit 8 and motor 9,

[0015] The steel pipe 1, for cylindrical structure, both sides are welded with steel sheet 2, form PC method pile main structure, and its detailed structural features are as shown in Figure 1 The existing device, so it is not further described;

[0016] The steel pipe 1 upper end is welded with spacing frame 4, and lower end is provided with multiple water-permeable holes 101;

[0017] The water pump 3 upper end is connected with water pump 5, and the whole is through spacing frame 4, and is installed in the inside of steel pipe 1, as shown in Figures 2-3 The water pump 3 lower end is provided with filter membrane 301, and drill bit 8 is installed at bottom;

[0018] The motor 9 is arranged in the inside of water pump 3 lower end, and is connected with drill bit 8;

[0019] In combination with embodiment, the specific construction process of the present application is as follows:

[0020] (1) first, steel pipe 1 is welded with steel sheet 2, forms PC method pile main structure, installs in actual foundation pit construction specified position, and underground water 6 will penetrate into the soil body 7 in steel pipe 1 through water-permeable hole 101;

[0021] (2) then, spacing frame 4 is welded on the upper end of steel pipe 2.

[0022] (3) Then, the water pump 5 is connected to the upper end of the suction pipe 3, the motor 9 is installed inside the lower end of the suction pipe 3, and the drill bit 8 is installed at the bottom of the suction pipe 3 and connected to the motor 9;

[0023] (4) Then, the suction pipe 3 is installed inside the steel pipe 3 through the limiting frame 4, the motor 9 is started, and the drill bit 8 is excavated to the deep part of the soil body 7;

[0024] (5) Finally, after the drill bit 8 drives the connected suction pipe 3 to excavate to the target depth, the water pump 5 is started, a negative pressure is formed inside the suction pipe, the underground water 6 in the soil body 7 is pumped out, and the degree of blockage of the suction pipe 3 is reduced through the water filter membrane 301, so as to realize the effective dewatering and water stopping functions around the extremely strong water permeable foundation pit.

[0025] The content described in the embodiments of the present specification is only a list of implementation forms of the utility model concept, and is only for the purpose of description. The protection scope of the utility model should not be regarded as being limited to the specific forms described in the embodiments, and the protection scope of the utility model also extends to the equivalent technical means that can be thought of by those skilled in the art according to the utility model concept.

Claims

1. A PC method pile pipe well dewatering device, characterized in that: The device includes a steel pipe, a steel plate, a water pump, a limit frame, a water pump, a drill bit and a motor. The steel pipe is a cylindrical structure. Both sides of the steel pipe are fixedly connected to the steel plate to form the main structure of the PC pile. The upper end of the steel pipe is welded to the limit frame, and the lower end of the steel pipe is provided with multiple water holes; the upper end of the water pump is connected to the water pump, and the water pump is installed inside the steel pipe through the limit frame. A drill bit is installed at the bottom of the water pump, and the motor is arranged inside the lower end of the water pump, and the motor is connected to the drill bit.

2. A PC method pile pipe well dewatering device according to claim 1, characterized in that: A water filter membrane is provided at the lower end of the water pumping pipe.

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