高速铁路CFG桩质量检验及通病防治研究

摘要

在试桩阶段,通过低应变检测、开挖进行验证,直观确定缺陷桩的类型,研究了在不同地质施工中出现各种异常情况下,造成CFG桩缺陷的原因,以确定并完善合理的施工工艺标准,加强质量控制,从而确保CFG桩成桩质量。%This paper verifies low strain inspection and excavation at pile testing stage,visually determines the categories of failure pile,and studies causes of CFG pile failures under different geology and construction condition that turns up various abnormality,so as to determine and perfect rational construction technology criteria and to strengthen quality control.As a result,it determines the CFG pile quality.