声波透射法和反射波法在混凝土灌注桩缺陷检测中的对比研究  

The Research on Concrete Filling Pile Defect Detection by the Analysis and Comparison of Ultrasonic Transmission Method and Reflected Wave Method

作　　者：余安[1] 汤洪志[1] 刘朋梅 张亮[1] 周阳权 

机构地区：[1]东华理工大学勘察设计研究院,江西抚州344000

出　　处：《工程地球物理学报》2015年第1期111-116,共6页Chinese Journal of Engineering Geophysics

摘　　要：超声波透射法和低应变反射波法是桩基检测中重要的两种方法。通过研究非金属超声波透射法采集的声学参数和低应变反射波法的反射波波形的变化,可以得到混凝土中介质的变化情况,从而达到判断基桩完整性的目的。本文对实测两根混凝土灌注桩的数据、波形曲线进行对比分析,确定所检测桩的缺陷类型,并总结了两种方法优劣性。进一步证明,在较长的灌注桩中结合使用这两种方法,可以准确有效地避免缺陷漏检,保证了基桩完整性检测的精度,为后续的工作提供了有效依据。Ultrasonic transmission method and low strain reflected wave method are two important methods of pile foundation inspection.By studying of the nonmetal acoustic parameters of ultrasonic transmission method and the waveform variations of low strain reflected wave method,the variations of concrete media are gotten,which could help us detect the integrity of foundation pile.This paper makes some comparing analysis of the measured data of two concrete filling pile and wave curve to determine defect types of the piles,and then summarizes the relative merits of the two methods.Further studies confirm that we can effectively and accurately avoid the defect leak by use a combination of two methods in a long pile.Meanwhile,it ensures the reliability and accuracy of the integrity evaluation and provides effective evidence for following development works.

关 键 词：超声波透射法 低应变反射波法 波形曲线 缺陷 

分 类 号：P631.5[天文地球—地质矿产勘探]