低应变法浅部缺陷信号的分析处理及应用  

Analysis and Treatment and Application of Superficial Defect Signal of Low Stress Method

作　　者：阳亮 陈松 李宏涛 YANG Liang;CHEN Song;LI Hongtao(Guangzhou Guangjian Construction Engineering Testing Center Co.,Ltd.,Guangzhou Guangdong 510405,China;Guangdong Province Building Health Monitoring and Safety Early Warning Engineering Technology Center,Guangzhou Guangdong 510405,China)

机构地区：[1]广州广检建设工程检测中心有限公司,广东广州510405 [2]广东省建筑物健康监测与安全预警工程技术中心,广东广州510405

出　　处：《工程质量》2024年第12期42-47,共6页Construction Quality

摘　　要：基于低应变法的弹性应力波在一维杆件中传播理论,介绍了浅部缺陷影响基桩低应变检测结果的理论基础,从理论分析层面提出正确判断桩身质量的技术要点。结合工程实例,对常见的低应变法浅部缺陷异常信号产生原因进行了分析和处理,通过开挖观察、钻芯和声波透射法等予以验证,结果证明了浅部缺陷信号对低应变检测结果的影响,为合理利用低应变检测技术进行基桩质量检测提供参考。Based on the theory of elastic stress wave propagation in one dimensional rod by low stress method,the theoretical basis of shallow defects affecting the detection results of foundation pile is introduced,and the technical points of correctly judging the quality of pile body are proposed from the theoretical analysis level are presented.Combined with engineering examples,the causes of common low stress method shallow defect abnormal signal is analyzed and processed,through the excavation observation,drilling core and acoustic wave penetration method,the results prove the influence of shallow defect signal on low strain detection results,provide reference for base pile quality detection of low strain detection technology.

关 键 词：基桩 低应变法 检测 浅部缺陷信号 

分 类 号：TU473.16[建筑科学—结构工程]