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《Earthquake Resistant Engineering and Retrofitting》 2009-04
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Effects of Elastic Cables and Dampers on Lateral Seismic Performance of Cable-stayed Bridge

Feng Yun-cheng,Yan Bin,Mu Zong-jun(The First Highway Design and Survey Institute of China Co.,Ltd.,Xian 710075,China)  
Based on seismic isolation principles,lateral elastic cables are set on the joint of girder and tower,and the lateral fluid viscous dampers are set on the joint of girder and abutment.The effects of lateral cables and dampers on cable-stayed bridge are studied afterwards by using the nonlinear time-history analysis method.The results indicate that seismic responses of key sections could be properly reduced by rationally choosing elastic cables.Neither of fixed system and sliding system is an appropriate lateral anti-seismic system.Seismic performance of abutments and its pile foundations could be improved with dampers.However,seismic responses of towers and its pile foundations could be increased,and relative displacements between girder-end and abutment-top would appear by using sliding system with dampers.
【CateGory Index】: U448.27
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