旁孔透射波法在长灌注桩桩长检测中的应用研究  

Application of Side Hole Transmission Wave Method In Pile Length Detection of Long Cast-in-Place Pile

作　　者：吴宝杰 董跃 黄永丰 李华超 WU Baojie;DONG Yue;HUANG Yongfeng;LI Huachao(Zhejiang Academy of Building Research&Design Co.,Ltd.,Hangzhou Zhejiang 310012,China;Zhejiang Construction Engineering Quality Inspection Station Co.,Ltd.,Hangzhou Zhejiang 310012,China)

机构地区：[1]浙江省建筑科学设计研究院有限公司,浙江杭州310012 [2]浙江省建设工程质量检验站有限公司,浙江杭州310012

出　　处：《工程质量》2023年第3期22-25,共4页Construction Quality

摘　　要：旁孔透射波法利用地震波在不同介质中传播速度、衰减系数的差异性来检测灌注桩桩长。对于长灌注桩,由于波的传播距离加大,对信号的信噪比要求较高。通过分析影响信噪比的因素,指导工程实践中长灌注桩桩长检测,取得较好的效果,能够有效检测长灌注桩桩长。The side hole transmission wave method uses the differences of seismic wave propagation velocity and attenuation coefficient in different media to detect the pile length of cast-in-place pile.For long cast-in-place piles,due to the increase of wave propagation distance,the signal-to-noise ratio of signals is required to be higher.By analyzing the factors affecting the signal-to-noise ratio,this paper guides the detection of long cast-in-place pile length in engineering practice,achieves good results,and can effectively detect the length of long cast-in-place pile.

关 键 词：旁孔透射波法 灌注桩 桩长 信噪比 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]