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Dynamic Responses of Light-Rail Train and Viaduct Bridge System

Zhang Mi;Xia He;Feng Aijun(Department of Civil Engineering,Northern Jiaotong University,Beijing 100044)  
In this paper,a simplified method is proposed to study the dynamic impacts of a moving light-rail train on viaduct bridge and the vibration effects of the surrounding bases. The 2-D dynamic model of train-bridge'system is established,by which the dynamic loads on the piers by the moving train are obtained.The 2-D dynamic model of pier-foundation-base'system is then adopted to analyse the vibration responses of the surrounding bases and the foundations. By a real example,the influences are studied of the train-bridge system on surrounding bases in shallow and pile foundations.
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