Prefabricated sleeve pipe pile capable of eliminating friction force of swelling-shrinking soil layer, and construction method thereof

Abstract

The invention discloses a prefabricated sleeve pipe pile capable of eliminating the friction force of a swelling-shrinking soil layer, and a construction method thereof, belongs to the field of civilconstruction engineering, and aims at solving the technical problems of small pile diameter, high construction difficulty, low bearing capacity, limited application range and the like in an existing sleeve pipe pile. The prefabricated sleeve pipe pile capable of eliminating the friction force of the swelling-shrinking soil layer comprises an outer sleeve pipe, an annular supporting plate and a steel ball, wherein a prefabricated upper pile body is arranged in the outer sleeve pipe, the steel ball is filled into the upper part of the prefabricated upper pile body, and the lower end of the steelball is supported by the annular supporting plate; and the outer sleeve pipe and the prefabricated upper pile body are located in the swelling-shrinking soil layer, a prefabricated lower pile body isarranged at the lower end of the prefabricated upper pile body, and the prefabricated lower pile body is arranged in a stabilized soil layer. According to the prefabricated sleeve pipe pile capable of eliminating the friction force of the swelling-shrinking soil layer, and the construction method thereof, the side friction force of the upper section of the prefabricated pile is isolated by the outer sleeve pipe, and an outer sleeve pipe shell is capable of moving along with the swelling-shrinking soil layer, so that the harmful deformation caused by the changed side friction resistance is dissipated; and the lower section is located in the stabilized soil layer, and the friction force and the end-bearing force of the stabilized soil layer can be adequately utilized, so that the needed bearing capacity is provided for an upper structure.

Description

technical field [0001] The invention belongs to the field of civil construction engineering, and in particular relates to a casing prefabricated pile for eliminating the frictional force of swelling and shrinking soil layers. Background technique [0002] my country has a vast territory, complex engineering geology, expansive soil, saline soil, collapsible loess, and permafrost are widely distributed, and foundation soil diseases occur frequently, causing buildings to not be used normally. For this reason, the construction party spent a huge amount of money to deal with it, but the common foundation treatment methods were difficult to work, causing huge economic losses to the construction party. Therefore, for expansive soil, saline soil, collapsible loess, frozen soil, and strong corrosion foundation diseases, reasonable treatment measures should be taken to change the stress mode of the superstructure and equipment foundation, reduce or eliminate the deformation of the fou...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a casing prefabricated pile that eliminates the friction force of the swelling and shrinking soil layer, so as to solve the technical problems of the existing casing piles such as small pile diameter, difficult construction, low bearing capacity, and limited application range.

Images