Near fault pile group foundation disaster prevention and reduction structure and construction method thereof

Abstract

The invention provides a near fault pile group foundation disaster prevention and reduction structure which comprises a pile group foundation, double-row partition walls composed of cement mixing piles, soil layer anchor cables and a fine sand belt; the pile group foundation is arranged in an overlying soil layer of a fault footwall and is easily threatened by deformation and failure caused by movement of a fault; the double-row partition walls are arranged between the pile group foundation and a movement dipping fault, and adjacent cement mixing piles are tightly arranged and are inserted into the overlying soil layer to a certain depth; the soil layer anchor cables penetrate through the pile group foundation, one ends of the soil layer anchor cables are driven into a stabilized soil layer, and the other ends of the soil layer anchor cables are anchored on the cement mixing piles, close to one side of the pile group foundation, of the partition wall; and the fine sand belt is used forsubstituting soil bodies between the double-row partition walls. The structure can adopt effective disaster prevention and reduction measures aiming to the existing building which is arranged nearbythe movement dipping fault and adopts the pile group foundation.

Description

technical field [0001] The invention relates to disaster reduction measures for pile group foundations near faults, in particular to a disaster prevention and reduction measure and implementation method for a double-row separation wall composed of cement mixing piles for pile group foundations near faults. Background technique [0002] The dislocation of the fault during the earthquake may lead to the rupture of the overlying soil of the bedrock, resulting in the fracture and damage of the pile foundation of the building near the surface rupture zone. There is currently a lack of targeted disaster reduction measures for the pile foundation near the active fault. Special attention. How to block the deformation and development of the overlying soil through reasonable isolation technology and reduce the damage caused by fault activities to the pile foundation of building groups can become an important research direction for disaster prevention and mitigation near faults. Cont...

AI Technical Summary

Problems solved by technology

[0002] The dislocation of the fault during the earthquake may lead to the rupture of the overlying soil of the bedrock, resulting in the fracture and damage of the pile foundation of the building near the surface rupture zone. There is currently a lack of targeted disaster reduction measures for the pile foundation near the active fault. Special attention

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