A Method of Computing Impact and Fatigue Life in the Railway Steel Girder Bridge
Ton‐Lo Wang
Abstract
Ton‐Lo Wang
Abstract
The purpose of this paper is to investigate the dynamic interactions between an steel girder bridge and a moving freight train. A non-linear, 100-ton, freight car vehicle model and a 70-ft (21.38 m), simply supported, steel deck girder bridge model were used in this study. Equations of motions for the vehicle, the bridge, and the bridge/vehicle interactions are also presented. The track irregularities on the approach and the bridge were generated from power spectral density functions for Federal Railroad Administration (FRA) Class 4 track. Either zero or two percent of the critical bridge damping was assumed for the bridge.
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The purpose of this paper is to investigate the dynamic interactions between an steel girder bridge and a moving freight train. A non-linear, 100-ton, freight car vehicle model and a 70-ft (21.38 m), simply supported, steel deck girder bridge model were used in this study. Equations of motions for the vehicle, the bridge, and the bridge/vehicle interactions are also presented. The track irregularities on the approach and the bridge were generated from power spectral density functions for Federal Railroad Administration (FRA) Class 4 track. Either zero or two percent of the critical bridge damping was assumed for the bridge.
Key concepts: Bridge (graph theory), Structural engineering, Deck, Track (disk drive), Engineering, Girder, Bridge deck, Mechanical engineering