Large-scale steel and concrete combined hollow anti-slide pile and its construction method

Abstract

The invention relates to geotechnical engineering, in particular to a large-dimension steel and concrete combined hollow anti-slide pile and a construction method thereof. The large-dimension steel and concrete combined hollow anti-slide pile comprises a plurality of pile sections which form a square framework by virtue of steel products, wherein concrete covers the inner side and the outer side of the square framework; the steel products are exposed from the upper end and the lower end of the concrete at the inner side; the pile sections are stacked up and down; a connecting point is formed between the steel products of upper and lower adjacent pile sections; and the connecting point is provided with a secondary concrete layer. The large-dimension steel and concrete combined hollow anti-slide pile provided by the invention is mounted in stages in a hole forming process, the mounted pile sections can be used as a protective structure, and are also used as one part of an anti-slide engineering pile, so that the construction speed is shortened, and the materials are saved; and the large-dimension steel and concrete combined hollow anti-slide pile has greater bending rigidity and better structure ductility, so that greater anti-slide bearing capacity can be obtained when the wall thickness is relatively small.

Description

technical field [0001] The invention relates to geotechnical engineering, in particular to a large-size steel and concrete combined hollow anti-slide pile. Background technique [0002] In geotechnical engineering, the rock and soil will produce sliding deformation under the action of additional load, self-weight, water, earthquake, etc. In order to eliminate these deformations, some anti-sliding structures will be used. One of the commonly used anti-sliding structures is anti-sliding piles. The sliding pile can use the part anchored in the stable rock and soil as its fixed end, use its material strength to ensure that it will not be damaged under load, and use its large cross-sectional size to obtain a certain rigidity, so as to ensure that it is under load. There will be no large deformation under it, so as to ensure the stability of the landslide mass. [0003] The cross-sectional size of the currently used anti-slide piles is usually more than 2m. The material is basica...

AI Technical Summary

Problems solved by technology

The deficiencies of the existing reinforced concrete solid anti-slide piles are five points: first, the hole wall may collapse under various loads and effects during the artificial hole forming process, so it is necessary to support while forming the hole, which will affect The construction progress; second, the pile must be filled with concrete when the hole is formed to the pile bottom elevation, which also affects the construction progress; third, the solid reinforced concrete anti-sliding pile is analyzed from the basic principles of material mechanics, and a certain The materials within the range can’t play a role and waste materials; fourth, if a pile-anchor composite structure is to be made, the anchor head must be on the outside of the pile; fifth, prefabricated structures cannot be used, and industrial production of structures cannot be realized

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