Dynamic Loading of Highway Bridges

by Radhey K. Gupta, Lect. in Civ. Engrg.; The Papua New Guinea University of Tech., Lae, Papua New Guinea,; formerly, Teaching Fellow at the Univ. of New South Wales, Kensington, Australia,

Serial Information: Journal of the Engineering Mechanics Division, 1980, Vol. 106, Issue 2, Pg. 377-394

Document Type: Journal Paper


Single span highway bridges of composite construction are idealized as beams as well as an orthotropic plate. A standard HS-20-44 highway vehicle is represented by a planar, two axle, sprung mass system with a frictional device. The response equations are derived in terms of the natural modal coordinates of the bridge and of displacement coordinates of the vehicle. The bridge dynamic loadings due to the initial bounce of the vehicle and in combination with the braking of the vehicle are investigated for symmetric as well as eccentric loading of the vehicle.

Subject Headings: Dynamic loads | Highway bridges | Vehicle loads | Infrastructure construction | Bridge-vehicle interaction | Composite bridges | Composite construction | Vehicles

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