Snowflake steel sheet piles and machining and construction method thereof

Abstract

The invention discloses snowflake steel sheet piles and a machining and construction method thereof. Each steel sheet pile comprises a pile body, supporting plates located at the upper end of the pilebody and a pile cap located at the top end of the pile body. The snowflake steel sheet piles are built in sections, and steel plates are laid on the steel sheet piles after building the snowflake steel sheet piles to enable pile groups to be connected integrally. Compared with the prior art, the snowflake steel sheet piles and the machining and construction method thereof have the advantages that(1) the bearing capacity of pile shafts is increased by the snowflake pile bodies; (2) the whole stiffness of the steel sheet piles is enhanced by an axisymmetric star design, and pile deformation iscontrolled effectively; (3) the arranging positions of the supporting plates conform to the law of stress diffusion of soil around the piles to be conductive to enabling the pile shafts to be stressed fully and enable the pile shafts to reach a small settlement; (4) the snowflake steel sheet piles are built at the bridge head of a highway bridge which is opened to traffic, the steel plates are laid at the tops of the piles, and differential settlement of the bridge head can be effectively controlled; and (5) the steel sheet piles are built in sand soil and soft soil areas by a crane, the steel plates are laid on the steel sheet piles, heavy machinery can enter quickly, the construction period is shortened, and the engineering efficiency is improved.

Description

technical field

[0001] The invention relates to steel sheet piles in geotechnical and geological engineering, in particular to snowflake-shaped steel sheet piles and their processing and construction methods. Background technique

[0002] The soft soil and sandy soil pile foundations in the bridge head transition section of the high-speed railway are subject to the loads from the bridge and other superstructures. The differential settlement between the subgrade and the bridge head directly affects the stability and safe operation of the high-speed railway line. Therefore, the differential settlement, especially for deep soft The post-construction settlement control effect of soil pile foundation determines the success or failure of high-speed railway construction to some extent. The reason for the large settlement is that the pile body cannot provide enough pile side resistance and pile end resistance, and the pile body cannot make full use of the bearing capacity of each so...

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