Mitigation of Resonance for High Speed Train-bridge Systems Considering Overhanging Beam Effects

L.Y. Liu; J.D. Yau; F. Zeng; W.D. Wang

doi:10.6180/jase.2016.19.3.03

Mitigation of Resonance for High Speed Train-bridge Systems Considering Overhanging Beam Effects

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

Download Citation: ||https://doi.org/10.6180/jase.2016.19.3.03

ABSTRACT

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.

Keywords: High Speed Rail, Interaction Dynamics, Overhanging Beam, Resonance, VBI Dynamics, Vibration Reduction

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