低应变法桩身完整性检测工程实例分析

Analysis of the Pile Integrity Test Project with Low Strain Method

论文通过大直径钻孔灌注桩和突变地层中预制管桩的两个实例,总结了低应变法检测中出现共性问题。不能明确桩身完整性类别时,要结合岩土工程勘察报告、设计图纸、施工记录、监理日志等资料来进行综合分析;同时根据实际情况采用静载法、钻芯法、高应变法、开挖、孔内摄像等方法进行验证检测,才能有效避免误判,得出准确的检测结论。

Based on two examples of large-diameter bored piles and prefabricated pipe piles in abrupt formations,this paper concludes that when common problems occur in the detection of the low strain method and pile integrity test is indeterminate,it is necessary to combine geotechnical engineering surveys design drawings,construction records,supervision logs and other materials to comprehensive analyses;meanwhile,according to the actual situation,static load method,core drilling method,high strain method,excavation,in-hole camera and other methods should be used for verification and inspection. The above analysis and verification of various methods can effectively avoid misjudgments and draw accurate detection conclusions.