Dynamic and Impact Behavior of Half-Through Arch Bridges
Publication: Journal of Bridge Engineering
Volume 10, Issue 2
Abstract
The objective of this paper is to present the results of an investigation of the dynamic and impact characteristics of half-through arch bridges with rough decks caused by vehicles moving across them. Seven arch bridges modeled as three-dimensional structures with overall span lengths ranging from are analyzed. The American Association of State Highway and Transportation Officials Specifications HS20-44 truck is the applied vehicle loading used in the analysis and is simulated as a three-dimensional, nonlinear vehicle model with 11 degrees of freedom. Truck components include the body, suspension, and tires. The bridge deck surface is assumed to have a “good” surface roughness and is simulated using a stochastic process (power spectral density function). The effect on impact factors of span length, rise-to-span ratio, and vehicle speed is discussed. The results of the analyses show that the impact factors of bending moment and axial force will not exceed 0.4 and 0.25, respectively. The proposed impact equations are simple and conservative and can be used in the design of half-through arch bridges.
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Acknowledgments
The writer would like to express his sincere appreciation to John Previte, P.E., for his assistance during this study.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 10 • Issue 2 • March 2005
Pages: 133 - 141
Copyright
© 2005 ASCE.
History
Received: Feb 20, 2003
Accepted: Dec 9, 2003
Published online: Mar 1, 2005
Published in print: Mar 2005
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