Dynamic Response of High-Speed Railway Bridge Decks with Beams Transverse to the Direction of the Track
Publication: Journal of Bridge Engineering
Volume 19, Issue 11
Abstract
Railway bridge decks are frequently constructed using a concrete slab supported by transverse beams, which in turn are connected to the main longitudinal supporting elements: arches, trusses, and so on. This is a structural design whose dynamic behavior often experiences excessive accelerations. Despite the frequent occurrence of this dynamic behavior, no studies have been completed that examine this dynamic response and the variables that cause it. This study proposes that reduced longitudinal stiffness is the cause of excessive vertical accelerations often exhibited by these decks. The study further proposes that increased stiffness in this direction, achieved by incorporating longitudinal beams connected to the underside of the slab, for example, greatly improves this structural design’s dynamic behavior.
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Information
Published In
Journal of Bridge Engineering
Volume 19 • Issue 11 • November 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 5, 2013
Accepted: Mar 4, 2014
Published online: Apr 10, 2014
Discussion open until: Sep 10, 2014
Published in print: Nov 1, 2014
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