Vibrations of two shallow cables with a cross-tie
Connecting neighboring cables by cross-ties to formulate a cable network is known as the most promising strategy for vibration control of long cables in cable stayed bridges.Understanding the system dynamics and optimizing the cross-tie parameters for best performance are still challenging owing to the system complexity.Most of the existing studies have been conducted based on the taut cable model.However,dynamics of long cables is affected by the sag effect which can impair the control effect largely.To investigate such effect,an analytical method based on the linear shallow cable theory is developed in this paper.Particularly,a twin cable system with a viscoelastic cross-tie is investigated in details.Focus is placed on the system modes which are affected by the cable sag.The sag induced coupling vibrations of the cable segments and the sag effect on the modal coupling and veering of the cable systems are demonstrated by parametric analysis.
Shallow cables free vibration vibration control modal analysis sag effect
Dongxiao Hong Limin Sun Lin Chen
Department of Bridge Engineering,Tongji University,Shanghai 200092,PR China Department of Bridge Engineering,Tongji University,Shanghai 200092,PR China;State Key Laboratory for
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
1148-1158
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）