Prefabricated dewatering pipe pile in building foundation pit and its application method

Abstract

The invention relates to a prefabricated dewatering pipe pile in a building foundation pit and a method for using the same. The prefabricated dewatering pipe pile is hollow and cylindrical and includes a pipe wall and a conical pile point. The upper part of the pipe wall is arranged with a plurality of water-permeable piles at intervals. hole. A filter cartridge is provided inside the prefabricated downwater pipe pile, and the upper end of the filter cartridge is open and the lower end is closed. The method for using the prefabricated dewatering pipe piles includes the following steps in turn: (1) prefabricated prefabricated dewatering pipe piles; (2) determining the total number and arrangement spacing of the prefabricated dewatering pipe piles; (3) installing the prefabricated dewatering pipe piles, and (4) put submersible pump and water outlet pipe in the prefabricated downwater pipe pile; (5) stop submersible pump pumping, clear hole, pour cement mortar, and part of cement mortar penetrates outwards through the permeable hole and connects with all Describe the consolidation of soil outside the prefabricated downfall pipe pile. The invention shortens the construction period of the pipe well, and at the same time, the prefabricated downwater pipe pile is changed into an uplift pile, and the anti-floating performance of the prefabricated downwater pipe pile is improved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a prefabricated downwater pipe pile in a building foundation pit and a method for using the same. Background technique [0002] In related technologies, the well-point dewatering method is a method of artificially lowering the groundwater level. Since the well-point dewatering method is suitable for construction environments with high groundwater levels or large precipitation, deep foundation excavation, and unstable pit walls, currently Widely used in earthworks. Before the excavation of the foundation pit, the wells are drilled around the foundation pit and the well point pipes are buried. The workload of the dewatering construction is heavy, and the well point pipes are discarded after the dewatering is completed, resulting in a waste of resources. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide prefab...

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Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide prefabricated dewatering pipe piles in building foundation pits and their use methods, to solve the technical problems of heavy dewatering construction workload, and waste of resources caused by the waste of resources after the well point pipes are discarded after the dewatering of the foundation pit is completed.

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