Performance Life Cost-Based Maintenance Strategy Optimization for Reinforced Concrete Girder Bridges
Publication: Journal of Bridge Engineering
Volume 18, Issue 2
Abstract
This paper presents a maintenance strategy optimization method for RC girder bridges by considering the performance indicators, service life and life cycle maintenance cost, as criteria. The condition and reliability indices are defined as performance indicators. The deteriorated processes of performance indicators with and without maintenance actions are described as multilinear models. The life cycle maintenance planning optimization of deteriorating bridges is formulated as a multiobjective problem to be solved by an improved nondominated sorting genetic algorithm with controlled elitism. The condition index, reliability index, service life, and life cycle maintenance cost of the bridge are considered as four separate objective functions. A simply supported RC girder bridge is analyzed as an application example to demonstrate the usefulness of the proposed procedure.
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Acknowledgments
The partial financial support of the National Nature Science Foundation of China (Grant No. 51178305) and the Key Projects in the Science and Technology Pillar Program of Tianjin (Grant No. 11ZCKFSF00300) is gratefully acknowledged. The opinions and conclusions presented in the technical note are those of the authors and do not necessarily reflect the views of the sponsoring organization.
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© 2013 American Society of Civil Engineers.
History
Received: May 27, 2011
Accepted: Nov 21, 2011
Published online: Nov 23, 2011
Published in print: Feb 1, 2013
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