斜拉桥索的全截面漏磁检测  

Full-section magnetic flux leakage detection of cable-stayed bridge cables

作　　者：张艺潇 季子扬 高智超 严宽 王一澄 王钰珏[2] ZHANG Yixiao;JI Ziyang;GAO Zhichao;YAN Kuan;WANG Yicheng;WANG Yujue(College of Mechanical&Energy Engineering,Beijing University of Technology,Beijing 100124,China;School of Information and Science Technology,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学机械与能源工程学院,北京100124 [2]北京工业大学信息科学技术学院,北京100124

出　　处：《无损检测》2025年第4期1-7,共7页Nondestructive Testing

基　　金：北京工业大学星火基金重点项目(XH-2024-01-8)。

摘　　要：斜拉桥索是桥梁结构中用来支撑桥面板的斜拉钢索,作为桥梁的重要受力部件,斜拉桥索的状态关乎桥梁整体的安全。作为长期服役的部件,其容易因雨水渗入老化破损的护套表面而出现内部腐蚀、断丝等问题,给桥梁安全带来隐患。漏磁检测法是斜拉桥索内部检损的有效手段,基于研发的斜拉桥索漏磁检测系统,对斜拉桥索缺陷进行了检测。首先,利用直流励磁方式对索体表层多处凹槽缺陷进行了漏磁检测,测试了护套破损对检测信号的影响。然后,使用直流与脉冲组合励磁方式对多处表层缺陷与内部缺陷进行漏磁检测,实现了桥索的全截面缺陷检测与定位。该研究可为斜拉桥索缺陷检测的工程应用提供参考。The cable-stayed bridge cables are used to provide structural support for the bridge panel.As a critical force component of the bridge,the condition of these cables is intricately linked to the overall safety and integrity of the structure.Due to prolonged service,they are susceptible to internal corrosion and wire breakage caused by rainwater infiltration into aging and damaged sheath surfaces during operation,thereby posing a significant safety risk for the bridge.The magnetic flux leakage(MFL)method serves as an effective approach for detecting internal damage in cable-stayed bridges.This study employed a developed MFL system specifically designed for cable-stayed bridges to conduct defect detection tests.Firstly,the DC excitation method was employed to detect grooves on the cable body surface,and the impact of sheath breakage on the MFL signal was examined.Subsequently,surface and internal defects were inspected using the combined DC and pulse excitation techniques to detect defects and localize cable-stayed bridges.This research could offer valuable insights for engineering applications related to cable defect detection.

关 键 词：斜拉桥索 漏磁 全截面检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]