Numerical Simulation of Partial-Depth Precast Concrete Bridge Deck Spalling
Publication: Journal of Bridge Engineering
Volume 17, Issue 3
Abstract
This paper describes the results of numerical simulations performed to investigate the spalling mechanism observed in several partial-depth precast prestressed concrete (PPC) bridge decks. Corrosion-induced cracking of prestressed steel reinforcement and panel butting were modeled using 2D finite element analysis to examine the nature of crack propagation that triggers the spalling effect observed. A parametric study was carried out on the basis of field observations from several bridges. FEM results showed that spalling is sensitive to side and bottom cover, and spacing of reinforcement attributable to bridging cracks. Findings indicate that the spalling mechanism is triggered by the presence of a critical bridging crack.
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Acknowledgments
This project is funded by the Missouri Department of Transportation (MoDOT) and the National University Transportation Center (NUTC) at Missouri University of Science and Technology (Missouri S&T). The funding is gratefully acknowledged.
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Information
Published In
Journal of Bridge Engineering
Volume 17 • Issue 3 • May 2012
Pages: 528 - 536
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Nov 27, 2010
Accepted: Jul 12, 2011
Published online: Jul 14, 2011
Published in print: May 1, 2012
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