在役桩基完整性检测技术研究进展

Research progress in detection technology of in-service pile foundation integrity

由于在役桩基存在承台、桩帽、盖梁等上部结构,现有桩基完整性检测技术难以实施应用,在役结构桩基完整性检测仍是一个世界级的技术难题。针对该难题,双速度法、超震波法、弯曲波法、旁孔透射法、电磁波CT法、动力荷载法等各种检测技术被提出。本文简要介绍了各检测技术的基本原理,结合工程实例中应用的效果,综合论述了各种检测技术的优缺点以及应用范围,以期为检测人员找出可行的检测技术,更好地服务工程实践。

Due to the existence of upper structures as pile caps and bent caps etc.,it is difficult to implement and apply the existing pile foundation integrity detection technology which is a world-wide technical challenge.In view of this problem,various pile detection techniques have been proposed,such as double velocity method,ultraseismic method,bending waves method,parallel seismic method,electromagnetic wave CT method,dynamic load method.The fundamentals of each pile detection technology are briefly introduced in this paper,and based on the application effect of engineering examples,the advantages and disadvantages of each detection technology and its application range are described comprehensively,so as to find out feasible detection technologies for inspectors in engineering practice.