Mitigation of Wind-Rain-Induced Cable Vibration in Cable-Stayed Bridges:Measurement Error
Recent advances in structural and construction technologies have enabled engineers to use the cable efficiently in relatively large structures such as long span cable-stayed bridges.It appeared that many factors and phenomena can generate cable vibration.The cables usually possess low damping and are therefore prone to many vibration problems, even causing large displacement.The active control method has been introduced to control the cable vibration in the cable-stayed bridges.The active control method is an effective method to suppress cable vibrations by adjusting the cable tension which is varied with time.This approach utilizes the axial motion of cables supported by an actuator installed at the anchorage to produce a time-varying force in the cable.To synthesize the feedback control signal, the cable vibration is measured by an optical tracking sensor attached at the mid-span cable.The studies are carried out to investigate the measurement error features of the control method as a design guideline.
Cable-stayed bridge Cable vibration Measurement Active control Error
Ling Yun Wang
College of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,Shanghai,China
国际会议
上海
英文
1630-1633
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）