低应变法检测PHC桩身缺陷的新认识

通过宁德国际会展中心桩基工程的低应变法检测事例,提出了反射波形上出现与入射波反相反射波并不一定仅是土层反应,断桩也可能导致低应变波形出现明显的反相反射波,进而对该桩基质量进行全面分析、评价,对桩基检测结果作出判断。

A New Opinion of Detecting the Deficiency of PHC Piles by the Low Strain Method

Based on the applied results of detecting the pile foundation of the Ninde International Convention Center by the low strain method, it is considered that the reflected waves of phase opposition with incident waves are not always at the bottom of the reactivity by soil layers, the broken piles can also result in obvious reflected waves of the reversed phase in the low strain waveshape, for which it can carry out overall analysis and evaluation of the quality of the pile foundation and form a judgement of detecting results of the pile foundation.