基于集成算法的混凝土中钢筋直径涡流检测  

Eddy current testing method for diameter of steel bar in concrete based on integrated algorithm

作　　者：王硕 李冶 李子新 WANG Shuo;LI Ye;LI Zixin(Jiangmen Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Jiangmen 529000,China)

机构地区：[1]广东电网有限责任公司江门供电局,江门529000

出　　处：《无损检测》2025年第4期56-63,共8页Nondestructive Testing

基　　金：安徽省重点研究与开发计划项目(202104a05020078)。

摘　　要：在智能电网基建建设中,钢筋混凝土质量关系到智能变电站、输电线路等工程的安全。而钢筋混凝土结构稳固的条件之一是所使用钢筋的直径是否符合标准。为了实现混凝土中钢筋直径的无损检测,提出了基于随机森林-支持向量机Stacking集成算法的钢筋直径涡流检测方法。首先,分析了混凝土中钢筋直径涡流检测原理;其次,建立了钢筋直径涡流检测有限元模型,设计了钢筋直径涡流动态检测试验过程并获得涡流检测信号,然后进行了数据预处理;最后,采用基于随机森林-支持向量机的Stacking集成算法,构建了混凝土中钢筋直径预测算法。对于不同规格的钢筋混凝土制品进行仿真验证,结果表明该方法具有效性和准确性。In the construction of smart grid infrastructure,the quality of reinforced concrete is related to the safety of smart substations,transmission lines and other projects.One of the conditions for the stability of reinforced concrete structures is whether the diameter of the steel bars used meets the standard.In order to achieve nondestructive testing of the diameter of concrete steel bars,a concrete steel bar diameter eddy current testing method based on the random forest support vector machine stacking ensemble algorithm was proposed.Firstly,the principle of eddy current testing for steel bar diameter in concrete was analyzed using eddy current testing technology;Secondly,a finite element model for eddy current detection of steel bar diameter was established,and the experimental process of dynamic eddy current detection of steel bar diameter was designed to obtain eddy current detection signals and perform preprocessing;Finally,a stacking ensemble algorithm based on random forest support vector machine was used to construct a prediction algorithm for concrete steel bar diameter.Simulation verification was conducted on reinforced concrete specimens of different specifications,and the experimental results showed the effectiveness and accuracy of this method.

关 键 词：混凝土 钢筋直径 涡流检测 随机森林 支持向量机 集成算法 

分 类 号：TM937[电气工程—电力电子与电力传动] TG115.28[金属学及工艺—物理冶金]