Analysis of seismic response control for long-span cable-stayed bridge under traveling wave input
In order to study the influence of traveling wave effect on control effectivenessof seismic mitigation for cable-stayed bridge. The vibration-suppressed effectiveness ofsemi-active control and passive control for a long-span floating cable-stayed bridge iscalculated and analyzed with its three dimensional finite element model. The seismicresponses of cable-stayed bridge under traveling wave input are calculated. Semi-activecontrol and passive control can get good control efficiency for the most seismic responses ofthe cable-stayed bridge, but they can make some seismic responses including axial force ofthe beam lager. The seismic inputs with different frequency spectrums evidently influenceseismic responses of the cable-bridge and vibration-suppressed effectiveness of the controlmethods. Semi-active control is better than passive control with most damping force allalong for vibration-suppressed effectiveness of the integer seismic responses after travelingwave effect considered. Traveling wave effect can make bad influence on the beam ofcable-bridge, but can be propitious to bridge tower. Bad influence of traveling wave effecton vibration-suppressed effectiveness of the two control methods is not remarkable.
cable-stayed bridge traveling wave effect vibration-suppressed effectiveness semi-active control passive control
QI Xingjun LI Xiaojun
Associate Professor, School of Civil Engineering, Shandong Jianzhu University, Jinan, China Professor, Institute of Engineering Mechanics, China Earthquake Administration, Harbin, China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）