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Resonance of a Prestressed Concrete Bridge Under Trains

 Resonance of a Prestressed Concrete Bridge Under Trains
Autor(en):
Beitrag für IABSE Conference: Bridges and Structures Sustainability - Seeking Intelligent Solutions, Guangzhou, China, 8-11 May 2016, veröffentlicht in , S. 212-220
DOI: 10.2749/222137816819258474
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By considering the vertical-horizontal interations, this paper investigates the effect of the prestress on the vibration of the bridge subjected to high-speed trains. Lagrange’s equations are adopt...
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Bibliografische Angaben

Autor(en):
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Conference: Bridges and Structures Sustainability - Seeking Intelligent Solutions, Guangzhou, China, 8-11 May 2016
Veröffentlicht in:
Seite(n): 212-220 Anzahl der Seiten (im PDF): 9
Seite(n): 212-220
Anzahl der Seiten (im PDF): 9
Jahr: 2016
DOI: 10.2749/222137816819258474
Abstrakt:

By considering the vertical-horizontal interations, this paper investigates the effect of the prestress on the vibration of the bridge subjected to high-speed trains. Lagrange’s equations are adopted to obtain the finite element equations of motion for the train-bridge coupling system, where the horizontal-vertical interaction is represented by an equivalent stiffness, and the effect of high-order displacements is expressed by an equivalent load. The proposed method is validated by a simply supported bridge, and the results show that due to the effects of horizontal-vertical interactions, the horizontal prestress forces can enlarge the vertical displacements of the bridge at resonance, while the vertical vehicular loads can cause the bridge vibration in horizontal direction.

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