横波负视速度法检测既有建筑下桩长的研究与应用  

Research and Application of Transverse Wave Negative Apparent Velocity Method in Pile Length Detection under Existing Buildings

作　　者：项诸宝 朱德兵[1,2] 赖虔林 高堤 朱涵 Xiang Zhubao;Zhu Debing;Lai Qianlin;Gao Di;Zhu Han(School of Geosciences and Info-Physics of Central South University;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education,School of Geoscience and Infophysics,(Central South University))

机构地区：[1]中南大学地球科学与信息物理学院,长沙市410083 [2]有色金属成矿预测与地质环境监测教育部重点实验室(中南大学),长沙市410083

出　　处：《勘察科学技术》2020年第3期58-64,共7页Site Investigation Science and Technology

摘　　要：该文介绍了横波负视速度法检测桩长的基本原理,利用最小相位子波和上下行横波反射序列褶积模型合成横波负视速度法的桩长检测信号,通过行波分离算法可以获得桩底反射波列的清晰信息,利用桩基横波波速信息提取桩长参数;结合桩基长度检测工程实例探讨了该技术的实用方法,并验证了有效性。横波负视速度法提高了工作效率,为既有建筑下桩长检测提供了一条可靠的解决途径。This paper introduces the basic principle of detecting the length of pile by transverse wave negative apparent velocity method.The pile length detection signal of transverse wave negative apparent velocity method is synthesized by the minimum phase wavelet and the upper and lower transverse wave reflection sequence convolution model.The clear information of pile bottom reflected wave sequence can be obtained by the traveling wave separation algorithm. The pile length parameters are extracted by transverse wave velocity information of the pile foundation. In accordance with the example of pile length detection engineering, the practical method of the technology is discussed, and its effectiveness is verified.The transverse wave negative apparent velocity method improves the work efficiency, and it provides a reliable solution for the detection of pile length under existing buildings。

关 键 词：既有建筑 桩长检测 横波负视速度法 行波分离 

分 类 号：TU473.16[建筑科学—结构工程]