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The wind-vehicle-bridge coupling dynamic analysis of three tower suspension bridge

WANG Liu,GUO Xiang-rong (School of Civil Engineering,Central South University,Changsha 410075,China)  
Taking Wenzhou Oujiang bridge as an example,a vehicle-bridge dynamic analysis model under wind load was estabilished considering both the influence of the average wind load and fluctuating wind load.Based on the principle of total potential energy with stationary value in elastic system and the "set in right position" rule for formulation of system matrixes,the bridge system spatial vibration equation was derived.By using computer simulation method,the bridge dynamic response and train running performance were calculated and analyzed in detail when trains run through the bridge,and the results provided a theoretical basis for dynamic design on three tower susention bridge.
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