基于电磁弹式索力传感器的悬索桥短吊索索力检测  

Application of Elasto-Magneto-Electric(EME)Sensor for Short Suspender Cable Force Measurement in Suspension Bridge

作　　者：沈伟 张伟山 魏巍 段元锋[2] 段元昌 SHEN Wei;ZHANG Weishan;WEI Wei;DUAN Yuanfeng;DUAN Yuanchang(Hubei Communications Investment Detection Co.,Ltd.,Wuhan 430050,China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;Monitoring and Control Hangzhou Co.,Ltd.,Hangzhou 310030,China)

机构地区：[1]湖北交投智能检测股份有限公司,武汉430050 [2]浙江大学建筑工程学院,杭州310058 [3]杭州健而控科技有限公司,杭州310030

出　　处：《结构工程师》2024年第3期145-152,共8页Structural Engineers

基　　金：国家重点研发计划(2019YFE0112600);国家自然科学基金(52378318、52361165658);浙江省自然科学基金(LHZ23E080003)。

摘　　要：采用传统索力测试方法进行短吊索索力测试的精度难以满足工程需求。本文以棋盘洲长江公路大桥悬索桥荷载试验为工程依托,提出基于磁弹原理及磁电效应的电磁弹式索力传感器检测吊索索力的方法,并与有限元分析结果以及频率法、应变法测试结果进行对比。结果表明,试验标定误差小于±2%,在荷载试验中,传统索力测试方法对吊索的测量误差偏大,采用电磁弹式索力传感器更为准确地测量了短吊索索力,解决了短吊索索力的测量难题。荷载试验的吊索索力测试结果表明,索力增量的测试值与分析值偏差小于±5%,实际索力的测试值与分析值偏差小于±4%。The accuracy of traditional cable force testing methods for short suspension cables is unable to meet engineering requirements.This paper proposed the elasto-magneto-electric(EME)sensor with the magnetoelastic principle and magnetoelectric effect to complete the cable force monitoring of short suspenders,based on the suspension bridge load test of Qipanzhou Yangtze River Highway Bridge.The measurement results obtained from EME sensor were compared with the finite element analysis value and the measurement results from the traditional cable force sensor.The results show that experimental calibration error of EME sensor is less than±2%,in the loading test,the measurement error of the traditional cable force sensor for the short suspender is relatively large,and the EME sensor can more accurately measure the increment of the cable force,which breaks through the difficulty of measuring the cable force of the short suspender.The results of the suspension cable force measurement with the EME sensor in the load test show that the deviation between the test value and the analysis value of cable force increment in field load test is less than±5%,and the deviation between the actual cable force test value and its analysis value is less than±4%.

关 键 词：电磁弹索力传感器 悬索桥吊索 荷载试验 索力检测 

分 类 号：U446[建筑科学—桥梁与隧道工程] U448.25[交通运输工程—道路与铁道工程]