Vibration of Suspension Bridges under Vehicular Movement
Publication: Journal of Structural Engineering
Volume 120, Issue 3
Abstract
A continuum analysis for determining the flexural‐torsional vibration of suspension bridge under vehicular movement is presented. The dynamic analysis duly considers the nonlinear bridge‐vehicle interactive force, eccentricity of vehicle path, surface irregularity of the bridge pavement, cable‐tower connection and end conditions for the stiffening girder. The surface irregularity of the bridge pavement is considered as a stationary random process characterized by a power spectral density function (PSDF) of the surface irregularity. The irregular profile of the bridge pavement is synthetically generated from the PSDF using Monte Carlo simulation technique. The analysis makes use of normal mode theory and calculates the response in time domain utilizing an iterative scheme and a few closed‐form expressions. The responses are obtained and compared for three types of vehicle models, namely, 3‐D, 2‐D, and single sprung mass system. A parametric study is also conducted to investigate the influence of some important bridge and vehicle parameters on the dynamic behavior of the bridge.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 3 • March 1994
Pages: 681 - 703
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jan 20, 1993
Published online: Mar 1, 1994
Published in print: Mar 1994
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