Investigation of wind-induced vibration of cable-stayed bridges based on field measurements
With the increase of large-span bridges,the wind-resistant performance of bridges has attracted more and more attention.Based on long-term field measurements,this paper presents the monitoring results of wind characteristics and wind-induced vibration of two large-span cable-stayed bridges in China,namely,Donghai Bridge and Shanghai Yangtze River Bridge,both of which have a central span larger than 400 m.The following findings are presented:(1)the wind direction frequencies at sites of both bridges demonstrate the characteristics of the subtropical monsoon climate in Shanghai;(2)the wind data recorded by structural health monitoring systems are easily disturbed by the bridge structure itself,thereby leading to a greater turbulence along the bridge axis;(3)the wind-induced vertical/torsional vibration of the girder of cable-stayed bridges could exhibit an approximately quadratic curve relation with the 10-min mean wind speed;(4)although high wind dominates the lateral vibration of the girder of cable-stayed bridges,it may exert less influence on the girders vertical and torsional vibrations as compared to heavy-duty traffics.This study serves as a field evidence for the wind-resistant research of bridges in similar environmental and operational conditions.
Bridge wind effect vibration structural health monitoring
Yi ZHOU Limin SUN Wenwen WANG
Department of Civil Engineering,University of Science & Technology Beijing,Beijing 100083,China State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,Ch Qinghai Local Railway Construction Investment Co.,Ltd.,Xining 810008,China
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
1230-1236
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）