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- W2099191566 abstract "In numerical dynamic analyses of railway bridges, the ballast is either considered as an additional mass or modeled using a mass-spring-damper system between the bridge deck and the sleepers. In both cases, the influence of the ballast on the natural frequencies of the bridge is neglected. However, a research project at the Division of Structural Engineering and Bridges at KTH has shown that the ballast may influence significantly the first natural frequency of bridges. To consider that aspect, a new finite beam element model has been developed. The main feature of the element is that the effect of the ballast is introduced through a non-linear longitudinal stiffness associated to the slip at the interface between the bridge and the ballast. This simple element can be used to model accurately the vertical vibrations in bridges, which allows a better prediction of the fatigue life." @default.
- W2099191566 created "2016-06-24" @default.
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- W2099191566 date "2012-08-20" @default.
- W2099191566 modified "2023-09-27" @default.
- W2099191566 title "The Non-Linear Influence of Ballast on the Vibrations of Railway Bridges" @default.
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- W2099191566 doi "https://doi.org/10.4203/ccp.99.103" @default.
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