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土木工程中的无损检测技术应用
              土木工程中的无损检测技术应用

              DOI:10.11973/wsjc240528



                                   斜拉桥索的全截面漏磁检测




                                      张艺潇 ,季子扬 ,高智超 ,严 宽 ,王一澄 ,王钰珏                    2
                                                             1
                                            1
                                                     2
                                                                              1
                                                                     1
                 (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)
                       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。
                       关键词:斜拉桥索;漏磁;全截面检测

                       中图分类号:TG115.28      文献标志码:A    文章编号:1000-6656(2025)04-0001-07

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


                            ZHANG Yixiao , JI Ziyang , GAO Zhichao , YAN Kuan , WANG Yicheng , WANG Yujue 2
                                                            1
                                        1
                                                                                    1
                                                                      1
                                                2
                      (1. College of Mechanical & Energy Engineering, Beijing University of Technology, Beijing 100124, China;
                      2. School of Information and Science Technology, Beijing University of Technology, Beijing 100124, China)
                      Abstract: 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.
                      Key words: cable-stayed bridge cable; magnetic flux leakage; full-section detection


                  斜拉桥索是桥梁结构中用来支撑桥面板的斜拉                          断丝等问题,给桥梁安全带来隐患。
              钢索,作为桥梁的重要受力部件,斜拉桥索的状态关                                斜拉桥索直径一般在50 mm以上, 长度在100 m
              乎桥梁整体的安全。作为长期服役的部件,其容易                            以上。如何对斜拉桥索进行缺陷检测一直是桥梁运
              因雨水渗入老化破损的护套表面而出现内部腐蚀、                            行维护中的工程技术难题。漏磁检测法是斜拉桥

                                                                索损伤检测的有效手段。桥索在被磁化的过程中,
                 收稿日期:2024-11-08                                缺陷位置与无缺陷位置钢索的磁导率相差较大,使
                 基金项目:北京工业大学星火基金重点项目(XH-2024-01-8)
                                                                得磁力线在缺陷处发生泄漏形成漏磁场,通过磁敏
                 作者简介:张艺潇(2004—),男,本科,主要从事测控技术与仪器
                                                                元件对被测部位进行扫查即可获取缺陷信息 。俄
                                                                                                         [1]
              研究工作
                 通信作者:王钰珏,wangyujue@bjut.edu.cn                 罗斯INTRON PLUS公司研发的钢索无损检测装
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                                                                                         2025 年 第 47 卷 第 4 期
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