L. Y. Liu1, J. D. Yau This email address is being protected from spambots. You need JavaScript enabled to view it.2, F. Zeng3 and W. D. Wang3
1School of Railway Tracks and Transportation, East China Jiao Tong University, Nanchang, P.R. China 2Department of Architecture, Tamkang University, New Taipei City, Taiwan 251, R.O.C. 3School of Civil Engineering and Architecture, East China Jiao Tong University, Nanchang, P.R. China
Received: December 11, 2015 Accepted: March 19, 2016 Publication Date: September 1, 2016
Short overhanging beams usually exist at both ends of a simply supported bridge. As a train passes through the overhanging beams of the bridge at high speeds, the overhanging beams would be subjected to intensive vibrations, from which the dynamic response of the train-bridge system would be built up. To mitigate the amplified response of the train-bridge system due to the overhanging beam effects, an end rotational spring to restrain the relative rotations is equipped between the free ends of the adjacent beams. By the vehicle-bridge interaction finite element analysis, the numerical studies indicated that the overhanging beams play a key role in amplifying the response of the train-bridge system. Even so, the proposed end restraints can reduce the amplified response of the VBI system significantly.
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