CAJ | 학술논문

桩身钢筋笼长度是影响桩身受力性能的一个重要因素，但桩基础施工完毕后，属于隐蔽工程，其长度是否符合设计要求却难以验证。针对桩基中钢筋笼长度检测难的问题，探索一种能定量或半定量检测桩体中钢筋笼的长度、且不需要进行破坏性开挖的无损检测技术是关键。本文简述了利用高密度电法测量系统进行钢筋笼长度的无损检测（充电法检测）的基本原理及其方法，并结合实际工程实例予以说明。
장신강근롱장도시영향장신수력성능적일개중요인소，단장기출시공완필후，속우은폐공정，기장도시부부합설계요구각난이험증。침대장기중강근롱장도검측난적문제，탐색일충능정량혹반정량검측장체중강근롱적장도、차불수요진행파배성개알적무손검측기술시관건。본문간술료이용고밀도전법측량계통진행강근롱장도적무손검측（충전법검측）적기본원리급기방법，병결합실제공정실례여이설명。
Length of pile reinforcement cage is a key factor affecting the pile bearing performance .It is difficult ,however ,to verify whether its length complies with design requirements since the comple‐tion of pile foundation has made it concealed works .Thus a nondestructive quantitative or semi -quantitative testing technology is essential to detect its length without destructive excavation .In this study ,high density resistivity measurement system is put forward ,including basic principles ,meth‐ods and engineering applications for illustration .