Cement mixing pile isolation arch wall preventing near-fault failure of pile foundation and method for cement mixing pile isolation arch wall

Abstract

The invention discloses a cement mixing pile isolation arch wall preventing the near-fault failure of a pile foundation and a method. The cement mixing pile isolation arch wall is located between thepile foundation and a bedrock fault and comprises a plurality of arch wall units arranged in the bedrock fault line direction and inserted into a still area of an overlying soil layer. Each arch wallunit is of a circular-arc-shaped wall body structure and comprises a plurality of cement mixing piles meshing with one another and arranged in a circular-arc shape, wherein the convex side of the circular-arc-shaped wall body structure is toward the bedrock fault. H-shaped steel is inserted in part of the cement mixing piles. The parts, higher than the cement mixing piles, of the inserted-in H-shaped steel are connected through top beams. According to the cement mixing pile isolation arch wall preventing the near-fault failure of the pile foundation and the method, aiming at the condition thatan activity tends to occur near the fault, effective isolation protection is conducted through an existing building of the pile foundation, and near-fault disasters in the seismic activity are reduced.

Description

technical field [0001] The invention relates to a cement mixing pile isolation arch wall for preventing pile foundation near-fault failure, which belongs to the subcategory of fixed building parts, underground or underwater structures, and the technical field of cement mixing pile isolation arch walls. Background technique [0002] During earthquake action, fault activity will cause permanent deformation of the overlying soil, cracking and dislocation of the surface rock layer or overlying soil, formation of cracks on the ground, movement, inclination or even failure of the building foundation, deformation, damage or even collapse of the superstructure , causing huge economic losses and casualties. Taking reasonable anti-seismic measures to ensure the safety of citizens' personal and property has always been the focus of earthquake engineering research. Numerous cases after earthquakes have shown that permanent surface deformation caused by active faults has caused serious ...

AI Technical Summary

Problems solved by technology

At present, there is a lack of reasonable and feasible protection measures and methods for pile foundation damage caused by bedrock inclined fault activities. How to effectively isolate the deformation of the overlying soil while avoiding damage to existing buildings has become the technical focus of disaster prevention and control measures near faults.

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