超声波反射法检测基桩嵌岩深度研究  

Research on Ultrasonic Reflection Method for Detecting the Depth of Rock Embedding in Foundation Piles

作　　者：洪丽凡 陈尧 伏学 孟照辉 HONG Lifan;CHEN Yao;FU Xue;MENG Zhaohui(Shenzhen Building Safety and Construction Quality Testing and Appraisal Center,Shenzhen 518052,China)

机构地区：[1]深圳市房屋安全和工程质量检测鉴定中心,深圳518052

出　　处：《广东土木与建筑》2024年第12期123-126,共4页Guangdong Architecture Civil Engineering

摘　　要：利用超声波在桩身及桩周土、岩传播速度不同的特性,基于反射波的极性变化判断强风化围岩与中风化围岩界面位置,进而得出基桩的嵌岩深度,为嵌岩桩入岩深度的检测提供了一个检测思路和方法,并经过了具体工程实践,取得了较理想的成果。By utilizing the different propagation speeds of ultrasound in the pile body and surrounding soil or rock,based on the polarity change of reflected waves would determined the position of the interface between strongly weathered and moderately weathered surrounding rock.Final,this method can determineand the rock embedding depth of the foundation pile.This method provides a detection idea for the depth of rock embedding piles,and has achieved ideal results through specific engineering practice.

关 键 词：桩基 超声波法 阻抗 嵌岩深度 

分 类 号：TU753[建筑科学—建筑技术科学]