排桩内支撑基坑典型失稳原因及处理对策分析

Analysis on Typical Instability Causes in Row Piles Internal Bracing System and Treatment Countermeasures

排桩内支撑支护结构是软土地区建筑工程中常用的一种基坑支护结构型式。从设计和施工2方面对影响排桩内支撑支护结构稳定的因素进行了分析,并结合某基坑工程破坏实例,对排桩内支撑支护结构典型失稳原因进行了分析探讨,提出了处理对策。开挖结果表明处理措施安全有效。

The row piles internal bracing system is commonly used in soft-soil area for foundation excavation retaining and protection. This paper analyzes the key factors in the design and construction,which affect the stability of this system. And based on a failure case of foundation pit engineering,the typical instability causes in row piles internal bracing are discussed with treatment countermeasures put forward. The excavation results show that the treatment is effective and safe.