Dynamic Effect of a Moving Truck on a Culvert
Publication: Journal of Bridge Engineering
Volume 17, Issue 2
Abstract
The dynamic interaction between a moving truck and a long span reinforced concrete culvert is studied for different truck velocities. The numerical simulation method presented in this paper is based on discretizing the culvert, surrounding soil, and roadway, using a plane strain finite element model (FEM) along with a seven-degrees-of-freedom FEM mass-spring-damper model for the truck. The time-variable coupled dynamic system is solved in a step-by-step manner using Newmark’s integration scheme. Results are presented for different parameters, including truck velocity, truck-culvert frequency ratio, damping ratio, road surface roughness, and roadway material. For the culvert under consideration, the results indicate that the road surface roughness has a significant influence on the dynamic impact factor relative to the displacement at the crown of the culvert. This influence is further magnified by variations in truck frequency, culvert damping coefficient, and truck velocity.
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Acknowledgments
The study reported in this paper was supported by a grant from the National Nature Foundation of China (Grant No. NNSFC50868007) and by the Kentucky Transportation Center at the University of Kentucky. The writers would like to express their appreciation for this support.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 17 • Issue 2 • March 2012
Pages: 382 - 388
Copyright
© 2012 American Society of Civil Engineers.
History
Received: May 18, 2010
Accepted: Feb 28, 2011
Published online: Mar 4, 2011
Published in print: Mar 1, 2012
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