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Vibrations of Short Span Railway Bridges for High Speed Lines
The physical model based on moving constant loads is widely used for the analysis of railway bridges. Nevertheless, this model is not well-suited for the study of short span bridges (L<=15-20 m), and the results it produces (displacements and accelerations) are much greater than those obtained experimentally. In this paper two factors are analysed which are believed to have an influence in the dynamic behaviour of short bridges. These two factors are not accounted for by the moving loads model and are the following: the distribution of the loads due to the presence of the sleepers and ballast layer, and the train-bridge interaction. Several numerical simulations have been performed in order to decide on their influence, and the results are presented and discussed herein.
Vibrations of Short Span Railway Bridges for High Speed Lines
The physical model based on moving constant loads is widely used for the analysis of railway bridges. Nevertheless, this model is not well-suited for the study of short span bridges (L<=15-20 m), and the results it produces (displacements and accelerations) are much greater than those obtained experimentally. In this paper two factors are analysed which are believed to have an influence in the dynamic behaviour of short bridges. These two factors are not accounted for by the moving loads model and are the following: the distribution of the loads due to the presence of the sleepers and ballast layer, and the train-bridge interaction. Several numerical simulations have been performed in order to decide on their influence, and the results are presented and discussed herein.
Vibrations of Short Span Railway Bridges for High Speed Lines
Museros Romero, Pedro (author) / Romero, M.L. (author) / Poy, A. (author) / Alarcón Álvarez, Enrique (author)
2000-01-01
Computational Civil and Structural Engineering | 5th. International Conference on Computational Structures Technology and 2nd. International Conference on Engineering Computational Technology | 06/09/2000-08/09/2000 | Leuven, Bélgica
Conference paper
Electronic Resource
English
DDC:
624
VIBRATIONS OF SHORT SPAN RAILWAY BRIDGES FOR HIGH SPEED LINES
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