反射波法在检测软土基桩完整性中的应用  

The Application of Reflected Wave Method in Integrity Detection of Foundation Pile in Soft Soil

作　　者：王炜 黄殿武[2] 高金良[2] 熊厚仁[2] Wang Wei;Huang Dianwu;Gao Jinliang;Xiong Houren(Zhejiang Xingyuan Construction Co.,Ltd.,Jiaxing,Zhejiang 314003;College of Civil Engineering and Architecture,Jiaxing University,Jiaxing,Zhejiang 314001)

机构地区：[1]浙江兴远建设有限公司,浙江嘉兴314003 [2]嘉兴学院建筑工程学院,浙江嘉兴314001

出　　处：《嘉兴学院学报》2022年第6期113-116,135,共5页Journal of Jiaxing University

基　　金：2020嘉兴市科技计划项目(2020AD10014)。

摘　　要：基于一维应力波理论的反射波检测技术原理,锤击桩顶会产生下行的透射波和上行的反射波并在桩内传播,因桩的密度、弹性模量及截面变化等会导致桩顶接收的反射波信号不同,通过分析反射波信号可以估计桩身长度,判断缺陷性质,以某工程的完整桩、轻微缺陷桩和断桩的三种典型反射波形为例进行分析,结果表明,完整桩的反射波信号曲线是连续光滑且有明显的桩底反射.According to the principle of reflected wave detection technology based on one-dimensional stress wave theory,hammering on a pile top will generate downward transmitted waves and upward reflected waves propagating through the pile.The reflected wave signals received on the pile top vary with the density,elastic modulus and cross-section.Therefore,by analyzing the reflected wave signals,we can estimate pile length and judge defect characteristics.The three typical reflection waves generated by an intact pile,a slightly defective pile and a broken pile are used as examples for analysis.The results show that an intact pile can be determined by a continuous and smooth reflected wave signal curve and strong reflection signals from the bottom of the pile.

关 键 词：桩基工程 基桩检测 反射波法 完整性分析 

分 类 号：TU473.1[建筑科学—结构工程]