一、引言混凝土桩是建筑物的一种常用基础。由于原地灌注桩的不利施工条件和打入桩的强力冲击等因素,常会出现质量问题。为检测桩基质量的各种检测方法相继提出,其中无损检测方法对工程桩无破坏,且简便易行,正日益受到人们的重视。本文简要介绍应用于桩基无损检测的弹性波反射法。 I. Introduction Concrete piles are a common foundation for buildings. Due to the unfavorable construction conditions of in-situ cast-in-place piles and the strong impact of broken piles, quality problems often occur. Various detection methods for detecting the quality of pile foundation have been proposed successively. Among them, the non-destructive testing method has no damage to the engineering pile and is simple and easy to carry out. Therefore, people are paying more and more attention to it. This article briefly introduces the elastic wave reflection method applied to the nondestructive testing of pile foundations.