Application of Elasto-Magneto-Electric(EME)Sensor for Short Suspender Cable Force Measurement in Suspension Bridge
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％.
elasto-magneto-electric sensorssuspender cableloading testcable force measurement
国家科技期刊平台
NSTL
万方数据
