磁测井法在检测灌注桩钢筋笼长度中的应用  

Application of Magnetic Logging Method in Estimating the Length of Reinforcement Cage of Cast-in-Place Concrete Piles

作　　者：刘俊江 袁金兴 张烨 王月香[1] LIU Junjiang;YUAN Jinxing;ZHANG Ye;WANG Yuexiang(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011;2.Suzhou Zhongzheng Testing Co.Ltd.,Suzhou,215011)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011 [2]苏州中正检测有限公司,江苏苏州215011

出　　处：《土工基础》2024年第5期865-867,共3页Soil Engineering and Foundation

基　　金：苏州市2021年建设科技发展计划项目(苏建函科[2021]295号文)。

摘　　要：磁测井法是检测灌注桩钢筋笼长度的常用方法,利用该检测技术可为存疑桩长或桩端部钢筋笼异常情况的判别提供重要依据。通过介绍磁测井法的基本工作原理和地下钢筋笼完整性测定方法,结合苏州某新建工程,对获取到的灌注桩钢筋笼磁异常曲线进行分析,检测结果证实了使用磁测井法在检测灌注桩钢筋笼长度领域的可行性和准确性,以及在工程监管领域的可推广性。The magnetic logging is a common method for measuring the length of steel reinforcement cage of the cast-in-place piles.The detection principle is to analyze the magnetic anomaly curve around the pile based on the distribution characteristics of the magnetic field around the pile to estimate the length of the entire steel reinforcement cage.The detection curve of the steel reinforcement cage with a good integrity is uniform and stable,and there will be reflected signals when passing through the pile bottom.Therefore,the detection method can provide an important basis for the identification of the abnormality of the steel reinforcement cage at the suspected pile length or pile end.By introducing the basic working principle of the magnetic logging method and measuring the integrity of the underground steel reinforcement cage,and combining with a new construction project in Suzhou,the magnetic anomaly curve of the steel reinforcement cage of the cast-in pile was analyzed.The test results confirmed the feasibility and accuracy of using the magnetic logging method in measuring the length of the steel reinforcement cage of the cast-in place pile,as well as its feasibility in the field of engineering testing and quality assurance.

关 键 词：磁测井法 钢筋笼长度 灌注桩 准确性 可推广性 

分 类 号：TU473[建筑科学—结构工程]