A comprehensive traffic load model for bridge safety checking

Vibration analysis of beams with general boundary conditions traversed by a moving force

The dynamic response of a simply supported box girder bridge due to a vehicle moving across the span is presented. The effect of the randomly varying dynamic force generated by the vehicle moving over a rough bridge deck is considered in the analysis. A comparison is made of results obtained by modeling the vehicle and vehicle-pavement interaction as a single unsprung mass and as a concentrated time-dependent force. A statistical analysis of the results shows that peak impact factors for deflection, moments, and shear are considerably greater than those normally prescribed in bridge codes, especially when the vehicle is moving at high speeds. The effect of vehicle mass is also more significant at higher speeds.

Bridge vibrations due to vehicle moving over rough surface

Vibration of beams with general boundary conditions due to a moving harmonic load

Closure of "Bridge Vibrations Due to Vehicle Moving Over Rough Surface"

The random response of highway bridges under the passage of vehicles is studied. The Poisson process is used to represent the vehicular traffic and the bridge is idealized as a linear system. The probability density function and expected rate of threshold crossings of the bridge response are obtained.

Chi Chao Tung

Papers

Random response of highway bridges to vehicle loads