Non-linear vehicle-bridge-wind interaction model for running safety assessment of high-speed trains over a high-pier viaduct

In order to properly study the high-speed traffic safety on a high-pier viaduct subject to episodes of lateral turbulent winds, an efficient dynamic interaction train-bridge-wind model has been developed and experimentally validated. This model considers the full wheel and rail profiles, the frictio...

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Bibliographic Details
Published in:Journal of sound and vibration 2018-04, Vol.419, p.63-89
Main Authors: Olmos, José M., Astiz, Miguel Á.
Format: Article
Language:English
Subjects:
Computer simulation
Dynamic interaction
Finite element analysis
Finite elements model
High piers
High speed rail
High-speed railway
Interaction models
Numerical analysis
Numerical methods
Piers
Rails (railroad)
Traffic safety
Traffic speed
Train-bridge systems
Trains
Turbulence
Turbulent wind
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Summary:In order to properly study the high-speed traffic safety on a high-pier viaduct subject to episodes of lateral turbulent winds, an efficient dynamic interaction train-bridge-wind model has been developed and experimentally validated. This model considers the full wheel and rail profiles, the friction between these two bodies in contact, and the piers P-Delta effect. The model has been used to determine the critical train and wind velocities from which the trains cannot travel safely over the O'Eixo Bridge. The dynamic simulations carried out and the results obtained in the time domain show that traffic safety rates exceed the allowed limits for turbulent winds with mean velocities at the deck higher than 25 m/s. •Nonlinear wind-train-bridge dynamic interaction model considering wheel-rail contact theory.•Running safety assessment of high-speed trains over a laterally flexible viaduct.•Train lateral resonances have been detected when crosswinds are acting on the viaduct.•Train travel unsafe when the acting turbulent winds have mean velocities higher than 25 m/s.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2017.12.038