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预应力混凝土结构开裂检测用弱磁传感器的研发与应用

黎亮亮, 郑荣国, 吴军武, 张军, 涂高鹏, 董亚波, 毛江鸿

黎亮亮, 郑荣国, 吴军武, 张军, 涂高鹏, 董亚波, 毛江鸿. 预应力混凝土结构开裂检测用弱磁传感器的研发与应用[J]. 无损检测, 2023, 45(8): 38-41. DOI: 10.11973/wsjc202308007
引用本文: 黎亮亮, 郑荣国, 吴军武, 张军, 涂高鹏, 董亚波, 毛江鸿. 预应力混凝土结构开裂检测用弱磁传感器的研发与应用[J]. 无损检测, 2023, 45(8): 38-41. DOI: 10.11973/wsjc202308007
LI Liangliang, ZHENG Rongguo, WU Junwu, ZHANG Jun, TU Gaopeng, DONG Yabo, MAO Jianghong. Development and application of weak magnetic sensor for prestressed concrete structure cracking detection[J]. Nondestructive Testing, 2023, 45(8): 38-41. DOI: 10.11973/wsjc202308007
Citation: LI Liangliang, ZHENG Rongguo, WU Junwu, ZHANG Jun, TU Gaopeng, DONG Yabo, MAO Jianghong. Development and application of weak magnetic sensor for prestressed concrete structure cracking detection[J]. Nondestructive Testing, 2023, 45(8): 38-41. DOI: 10.11973/wsjc202308007

预应力混凝土结构开裂检测用弱磁传感器的研发与应用

基金项目: 

国家自然科学基金资助项目(51820105012)

浙江省交通投资集团科技研发项目(202006)

详细信息
    作者简介:

    黎亮亮(1983-),男,本科,工程师,主要从事桥梁工程施工技术的研究与应用工作

    通讯作者:

    张军, E-mail:zj@nit.zju.edu.cn

  • 中图分类号: TG115.28

Development and application of weak magnetic sensor for prestressed concrete structure cracking detection

  • 摘要: 预应力混凝土结构广泛应用于公路和铁路桥梁建设中。受收缩徐变、荷载和温度等因素影响,混凝土在长期服役过程中可能会发生开裂,导致钢筋锈蚀或服役性能的劣化。已有的人工巡检和光纤传感等方法监测混凝土开裂时存在时效性和可靠性低等问题。基于漏磁效应和应力致磁化效应,研发了预应力混凝土结构开裂弱磁传感器并进行了可靠性分析和工程应用。结果表明,该弱磁传感器具有较高的灵敏度和可靠性,初步监测结果已得到大桥管理部门的证实,该系统可以实现对预应力混凝土开裂的实时、长期和自动化监测。
    Abstract: The prestressed concrete structure is widely used in the construction of highway and railway bridges. Under the influence of shrinkage and creep, load, and temperature, concrete may crack during long-term service, leading to deterioration of service performance such as steel corrosion. The existing methods such as manual inspection and fiber optic sensing have problems with low timeliness and reliability monitoring concrete cracking. Based on the magnetic leakage effect and stress induced magnetization effect, the author developed a weak magnetic sensor for cracking prestressed concrete structures and conducted reliability analysis and engineering applications. The results indicate that the weak magnetic sensor ha good sensitivity and reliability, and the preliminary monitoring results confirmed by the bridge management department. The system can achieve real-time, long-term, and automated monitoring of prestressed concrete cracking.
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出版历程
  • 收稿日期:  2022-07-30
  • 刊出日期:  2023-08-09

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