Safety and Stability of Light-Rail Train Running on Multispan Bridges with Deformation
Publication: Journal of Bridge Engineering
Volume 21, Issue 9
Abstract
This study investigated the safety and stability of light-rail trains that run on multispan simply supported bridges (MSSBs) and have experienced some settling and girder deformation caused by both foundation settlement and girder deflection/camber. A three-dimensional dynamic nonlinear finite-element model for a light-rail train track–MSSB interaction system, which took into account rail irregularities, girder deformation, wheel–rail contact, and coupling effects, was developed. A case study analyzed a four-car light-rail train rolling on a MSSB, and the relationships between the girder deformation and running performance under various speeds were obtained. The results indicate that speed is the dominant factor that contributes to the safety and stability of the light-rail train when girder deformation is present. In addition, the influence of girder deformation was found to be greater on safety than on stability. In real applications, it is recommended to pursue advanced monitoring and evaluation techniques for safe operation of light-rail train systems.
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Acknowledgments
This research is supported by the National Youth Science and Technology Innovation Talents Program, China; the Jiangsu Province Natural Science Foundation (Grant BK20151092), China; the Graduate Researcher and Innovation Plan Project for the Regular Institution of Higher Learning in Jiangsu Province (Grants CXLX13_102 and CXZZ12_0108), China; and the State Foundation for Studying Abroad, China. This support is gratefully acknowledged.
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Published In
Journal of Bridge Engineering
Volume 21 • Issue 9 • September 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 16, 2015
Accepted: Feb 11, 2016
Published online: Mar 11, 2016
Discussion open until: Aug 11, 2016
Published in print: Sep 1, 2016
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