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Vibration analysis of a steel truss bridge with random track irregularities under a moving train load

 Vibration analysis of a steel truss bridge with random track irregularities under a moving train load
Auteur(s): , ,
Présenté pendant IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014, publié dans , pp. 609-613
DOI: 10.2749/222137814814028142
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This paper deals with the dynamic response of a truss bridge under a single moving train. A planar finite element model of a train-bridge system is used. The train is divided into one-foot sprung ...
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Détails bibliographiques

Auteur(s):


Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014
Publié dans:
Page(s): 609-613 Nombre total de pages (du PDF): 5
Page(s): 609-613
Nombre total de pages (du PDF): 5
Année: 2014
DOI: 10.2749/222137814814028142
Abstrait:

This paper deals with the dynamic response of a truss bridge under a single moving train. A planar finite element model of a train-bridge system is used. The train is divided into one-foot sprung masses. The bridge is modelled as frame and truss elements. Vertical random track irregularities are generated by power spectrum density functions. The dynamic equations of motion of the train and the bridge are coupled by the shape constraints and contact forces. The interaction dynamic equation of motion is solved by the Newmark-beta and Newton-Raphson method. The dynamic response of a steel truss bridge with track irregularities under a KTX train is calculated as an example. The dynamic impact factors for different bridge nodes are evaluated and compared with different train speeds and track irregularities conditions.

Mots-clé:
pont en poutre en trellis