基于微波传输特性的混凝土杆塔钢筋腐蚀状态仿真分析  

Simulation Analysis on Corrosion State of Steel Bar in Concrete Tower Based on Microwave Transmission Characteristics

作　　者：黎鹏 张博明 王申华 蒋建红 林军 吴田 LI Peng;ZHANG Boming;WANG Shenhua;JIANG Jianhong;LIN Jun;WU Tian(Hubei Provincial Engineering Technology Research Center for Power Transmission Line,China Three Gorges University,Yichang 443002,China;College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,China;Wuyi Electric Power Supply Company,State Grid Zhejiang Electric Power Company,Jinhua 321200,China;Zhejiang Wuyi Electric Installation Engineering Co.,Ltd.,Jinhua 321200,China;Pujiang Electric Power Supply Company,State Grid Zhejiang Electric Power Company,Jinhua 322200,China)

机构地区：[1]湖北省输电线路工程技术研究中心(三峡大学),宜昌443002 [2]三峡大学电气与新能源学院,宜昌443002 [3]国网浙江省电力有限公司武义供电公司,金华321200 [4]浙江武义电气安装工程有限公司,金华321200 [5]国网浙江省电力有限公司浦江供电公司,金华322200

出　　处：《高电压技术》2025年第3期1158-1168,共11页High Voltage Engineering

基　　金：国家自然科学基金(51807110);电网环境保护国家重点实验室开放基金(GYW51201901076)。

摘　　要：钢筋混凝土杆塔作为电力输送的重要载体,在长期运行过程中,其内部钢筋容易受到环境影响而发生腐蚀现象,进而影响其机械强度。为探究高效实用的腐蚀评估手段,提出一种基于微波传输特性的混凝土杆塔钢筋腐蚀检测方法,开展了钢筋混凝土模型微波检测试验,通过试验与数值仿真结果的对比,验证了微波腐蚀检测数值模拟方法的有效性。建立了实际钢筋混凝土杆塔腐蚀微波检测数值仿真模型,分析了提离距离、波导放置方式以及频率等对检测结果的影响,从而确定最佳检测参数,并通过旋转扫描和移动扫描对杆塔不同腐蚀深度、长度和位置的检测效果进行了分析。研究结果表明:根据微波散射参量的变化规律,可以获得钢筋的腐蚀状态;透射系数变化量的峰值与腐蚀深度成正比,通过其峰值及幅值变化区域可以反映钢筋的腐蚀深度及长度。该研究可为混凝土杆塔内部钢筋腐蚀检测提供新方法。Reinforced concrete tower is an important carrier for power transmission.In the long-term operation process,the internal steel bars are prone to corrosion due to environmental influences,which in turn affects their mechanical strength.For purpose of exploring efficient and practical corrosion evaluation method,a corrosion detection method for reinforced concrete tower based on microwave transmission characteristics was proposed in this paper.The microwave detection test of reinforced concrete model was carried out,and the validity of the microwave corrosion detection numer-ical simulation method was verified by comparing the test with the numerical simulation results.The numerical simulation model of corrosion microwave detection for the actual reinforced concrete tower was established.The influ-ences of lift-off distance,waveguide placement and microwave frequency on the detection results were analyzed,and the optimal detection parameters were determined.The detection effects of towers corrosion with different depths,lengths and positions were analyzed by rotating scanning and moving scanning.The results show that the corrosion state of steel bar can be obtained according to the variation law of microwave scattering parameters.The peak value for the variation of transmission coefficient is proportional to the corrosion depth,and the corrosion depth and length can be reflected by its peak and amplitude variation area.The research can provide a new method for the corrosion detection of steel bars in concrete towers.

关 键 词：钢筋混凝土 杆塔 腐蚀检测 微波检测法 传输特性 

分 类 号：TU375[建筑科学—结构工程]