On the Dynamic Response of Bridges by Oscillating Vehicles on Rough Surfaces

by P. Gross, Technical Univ of Munich, Germany,
R. Rackwitz, Technical Univ of Munich, Germany,

Document Type: Proceeding Paper

Part of: Structural Safety and Reliability


The spectral theory is applied to the response of bridges under a Poissonian stream of vehicles moving with constant speed over the bridge. The vehicles are modeled as oscillators with random masses, the bridge surface as a Gaussian process with given spectral density. It is found that the surface roughness can produce non-negligible additional loads but, for normal road traffic, no dynamic interaction between vehicles and bridge need to be considered.

Subject Headings: Bridge-vehicle interaction | Oscillations | Dynamic response | Vehicles | Pavement surface roughness | Hydraulic roughness | Dynamic loads | Vehicle loads

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