Recyclable foundation pit support pipe pile and application and recovery method thereof

Abstract

The invention discloses a recyclable foundation pit support pipe pile and an application and recovery method thereof. The recyclable foundation pit support pipe pile is characterized by comprising two semicircular hollow steel tubes. The axial section of each semicircular hollow steel tube is provided with alternating rectangular teeth and grooves. The rectangular teeth of the two semicircular hollow steel tubes are respectively provided with pinholes, the pinholes with coinciding center lines allow long pins to axially penetrate the rectangular teeth for fixation when the two semicircular hollow steel tubes are abutted to form the steel pipe pile. The application and recovery method includes the steps of determining the position of the pipe pile in a foundation pit, making a drilled hole, abutting the two semicircular hollow steel tubes into the steel pipe pile, placing the pipe pile into the drilled hole, constructing a foundation of the foundation pit, recovering the steel pipe pile after construction, and the like. The recyclable foundation pit support pipe pile and the application and recovery method thereof have the advantages that defects of the prior art are overcome, foundation pit supporting structures are recycled, engineering cost is reduced, engineering cycle is shortened, damage of the foundation of the foundation pit is avoided, and the recyclable foundation pit support pipe pile is highly practical.

Description

technical field [0001] The invention relates to a foundation pit support pipe pile, more specifically, the invention relates to a recyclable foundation pit support pipe pile suitable for building construction and subway station foundation pit engineering and its use and recovery method. Background technique [0002] Because the foundation pit is a temporary project, basically after the construction of the lower foundation is completed, the supporting piles on the side of the foundation pit wall have lost their effect. And present foundation pit project, mainly adopts two kinds of construction methods of bored pile and concrete pile-anchor structure. There are following defects in these two kinds of construction methods respectively: [0003] (1) For bored piles, the piles are not recyclable, and each construction requires drilling and pouring, which increases the construction period and inevitably brings huge waste of economic costs; [0004] (2) For the concrete pile-anch...

AI Technical Summary

Problems solved by technology

[0003] (1) For bored piles, the piles are not recyclable, and each construction requires drilling and pouring, which increases the construction period and inevitably brings huge waste of economic costs;

[0004] (2) For the concrete pile-anchor structure, not only the piles are difficult to recycle, but also the steel sheet piles in the pile-anchor structure are easy to loosen the soil at the bottom of the pile during the pile pulling process, so that the construction of the superstructure has been completed. damage to foundations;

[0005] (3) If the concrete pile-anchor structure is used in a hard soil layer, the pile extraction process is not only the soil mass at the bottom of the loose pile, but the more serious problem is that the surrounding soil layer is destroyed.

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