Lifetime Performance Analysis of Existing Reinforced Concrete Bridges. I: Theory
Publication: Journal of Infrastructure Systems
Volume 11, Issue 2
Abstract
In this first part of a two-part paper, a general methodology for lifetime performance analysis of existing reinforced concrete bridges is presented. The framework for the methodology is established by identifying four distinct categories: limit state equations, random variables, deterministic parameters, and constant coefficients. The limit state equations are derived by strictly adhering to the load and capacity formulas and requirements set forth in AASHTO specifications. Generality is pursued by establishing parametric limit state equations such that the formulas are applicable to any type of reinforced concrete bridge having similar superstructure components. The methods presented in this paper for reinforced concrete bridges are part of a larger study focusing on lifetime performance evaluation of multiple bridge types in an existing bridge network. For time-variant performance analysis, special emphasis is placed on the chloride penetration modeling in slab and girders. In the companion paper, the lifetime performance of reinforced concrete slabs and girders in an existing bridge network is investigated and results are presented for three bridges located in Colorado.
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Acknowledgments
The partial financial support of the U.S. National Science Foundation through Grant Nos. CMS-9506435 and CMS-0217290 is gratefully acknowledged. The support provided by the Colorado Department of Transportation is also gratefully acknowledged. The writers wish to thank Professor Ross B. Corotis for his useful remarks on different aspects of this paper. The opinions and conclusions presented in this paper are those of the writers and do not necessarily reflect the views of the sponsoring agencies.
References
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Information & Authors
Information
Published In
Journal of Infrastructure Systems
Volume 11 • Issue 2 • June 2005
Pages: 122 - 128
Copyright
© 2005 ASCE.
History
Received: Dec 23, 2002
Accepted: Feb 3, 2004
Published online: Jun 1, 2005
Published in print: Jun 2005
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