一、前言钻孔灌注桩是桥梁工程及高层建筑常用的基础形式。由于钻孔桩需要就地灌注大量水下混凝土,且施工中影响因素较多,稍有不慎,极易产生断桩、夹层、颈缩、孔洞等事故。因此,如何以较简便的方式检测钻孔灌注桩的混凝土灌注质量和各种隐患,是当前亟待解决的问题。近年来,桩的检测技术已有较大发展,目 I. Preface Bored piles are common forms of bridge engineering and high-rise buildings. Because of the need to pour a large number of underwater drilling bored concrete, and the construction of more influential factors, a little careless, extremely easy to produce broken piles, mezzanine, necking, holes and other accidents. Therefore, how to detect the concrete pouring quality and various hidden dangers of the bored piles in a relatively simple way is an urgent problem to be solved. In recent years, the pile detection technology has been greatly developed