单孔地震法在高速公路桥墩基桩检测中的应用与研究  

The research and application of single hole seismic method in test of highway piled foundation

作　　者：王俊 刘成 肖长安 雷宛[2] 

机构地区：[1]中国电建集团昆明勘测设计研究院有限公司,昆明650051 [2]成都理工大学环境与土木工程学院,成都610059

出　　处：《物探化探计算技术》2017年第5期684-690,共7页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：简要介绍了单孔地震法在高速公路桥墩基桩桩身完整性检测中的应用,根据现场情况建立了相关的二维地球物理模型,用波动力学原理进行地震波正演,将正演的地震波响应特征作了总结。讨论分析了"有桩无桩、桩身长度、桩身完整性"等三个桩基无损检测问题,区别于以往笼统的将地震记录的时间-深度曲线的变化归于桩基破损的推测,分析了造成时间-深度曲线的变化的原因,明确几种情况下桩基单孔地震记录的特征,用模型响应指导了解释工作,提高了桩基检测工作的质量和检测结果评定的可靠性。This paper briefly introduces the application of single hole seismic method in high pier foundation pile integrity detection.According to the situations,the authors establish several two-dimensional geophysical models related which based on the wave dynamics principle of seismic wave to summarize the response characteristics of the pile foundation damage.The authors also discuss and analyze three nondestructive detection pile foundation problems considering whether there is a pile foundation,pile length,pile integrity.The authors show clearly characteristics of several cases of single pile hole seismic record.Different from the past which regard the change of time and depth curves as pile breakage.Using the model response guiding the interpretation work could improve the reliability of pile foundation detection quality and evaluation of test results.

关 键 词：单孔地震法 桩基无损检测 二维模型 地震波正演 

分 类 号：P631.4[天文地球—地质矿产勘探]