夯实水泥土桩桩身完整性探地雷达检测技术试验研究  

Experimental Study of the Ground Penetrating Radar Monitoring on the Integrity of Tamping Soil Cement Pile

作　　者：王海东[1] 张梦[1] 邓继平 罗杰[3] 杨献章 廖春芳 

机构地区：[1]湖南大学建筑安全与节能教育部重点实验室,湖南长沙410082 [2]湖南省交通建设质量安全监督管理局,湖南长沙410116 [3]湖南省交通科学研究院,湖南长沙410015 [4]湖南省郴宁高速公路建设有限公司,湖南郴州423000

出　　处：《湖南大学学报（自然科学版）》2012年第3期6-10,共5页Journal of Hunan University:Natural Sciences

基　　金：湖南省自然科学基金资助项目(07JJ5098);湖南省交通科技计划资助项目(200808);湖南省建设科技计划资助项目(07-22)

摘　　要：针对复合地基柔性桩基桩身完整性难以检测的实际工程问题,提出了组合天线阵方式的探地雷达检测技术.通过对6根夯实水泥土桩桩长和桩身缺陷检测试验研究发现,桩长检测的最大平均相对误差为5.10%,桩身缺陷位置检测相对误差为5.45%,表明采用此技术对复合地基柔性桩基桩身完整性进行测定具有足够的可靠性,满足工程需要.通过对龄期、配合比、含水率和天线选择等影响因素的分析,得到了这些参数对检测质量的影响规律,并据此为工程应用提出了相应合理建议.The combination of antenna array detection method of ground penetrating radar was put forward to solve the actual engineering problem that is difficult to monitor the integrity of the flexural pile composite foundation. The experiments of the lengths and defects of six tamping soil cement piles have shown that the maximum average relative error of pile lengths is 5.10% and the relative error of the pile position of defects is 5.45%. The results have indicated that there is enough reliability to determine the pile integrity by using the GPR method,which can meet the engineering needs. Furthermore, the age of cement, the ratio between soil and cement, moisture content were studied, and corresponding proposals for actual projects were presented.

关 键 词：复合地基 夯实水泥土桩 桩身完整性 探地雷达 检测 

分 类 号：TU91[建筑科学—建筑理论]