Application method of novel post-tensioned pre-stress soil blocking pile

Abstract

A novel application method of post-tensioned prestressing retaining pile is characterized in that after getting rid of a distance sleeve, the end of a bond-free stranded wire of the retaining pile structure is connected with a metal anchor head which is formed by squeezing and connecting a metal sleeve and the bond-free stranded wire without distance sleeve; the bond-free stranded wire in the retaining pile is isolated by the distance sleeve and cement freestone concrete; the whole stranded wire in the sleeve is packed by the cement freestone concrete; the bond-free stranded wire is colligated on a constructional steel bar cage and is combined with pouring concrete to form a concrete retaining pile after being arranged in a hole; when reaching the designed tension intensity value, the concrete enforces prestressing force to the retaining pile and uses a special anchor device for anchoring so as to improve the soil resisting ability of the retaining pile. The obvious progress and beneficial effects lie in improving the reinforcement arrangement of the concrete retaining pile, reducing the configuration of ordinary bearing steel bars in the retaining pile by using high-intensity stranded wire, thus greatly enhancing the soil resistance ability of the retaining pile to a large extent without increasing the structure size and achieving the purpose of reducing engineering cost and constructing conveniently.

Description

technical field [0001] The invention relates to a soil retaining pile in civil engineering, in particular to an application method of a novel post-tensioned prestressed soil retaining pile. Background technique [0002] In the known technology, using reinforced concrete retaining piles to support slopes or foundation pits is a commonly used support method. The soil pressure can achieve the engineering purpose of stabilizing the soil around the slope and foundation pit. [0003] Reinforced concrete retaining piles are composed of steel bars and concrete, and the retaining piles cast on site can be divided into mechanical hole-forming piles and manual hole-digging piles. The mechanical hole is mostly made of mud retaining wall. After the hole is made to the design depth, the hole is cleaned, the steel cage is placed, and the downpipe is poured with concrete to form a pile; the manual digging is mostly made of fine stone concrete wall. Reinforcement cages and pouring concrete...

AI Technical Summary

Problems solved by technology

This kind of reinforced concrete retaining pile, which has been widely used for a long time and formed on site, has the disadvantage that the strength of the steel bars used is restricted, and a large amount of reinforced concrete is often required to meet the design requirements.

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