[2011] Ultimate strength reliability analysis of corroded steel-box girder bridges > Selected Papers

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Selected Papers

[2011] Ultimate strength reliability analysis of corroded steel-box gi…

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Thin-Walled Structures, vol.49, no.1, pp.157-166, January 2011

Ultimate strength reliability analysis of corroded steel-box girder bridges

Author(s): Y. Sharifi and J.K. Paik

Abstract :
Structural reliability theory is a useful tool for estimating the risks associated with deteriorating structures. The aim of this study is to develop and demonstrate a procedure for the assessment of box girder bridge ultimate strength reliability with the degradation of plate members due to general corrosion taken into account. A probabilistic model for ultimate steel-box girder strength is established on the basis of an analytic formula that considers corrosion-related, time-dependent strength degradation. The study involves the selection of representative structures, formulation of limit state functions, development of resistance models for corroded steel-box girders, development of load models, development of a reliability analysis method, reliability analysis of the selected bridges and development of the time-dependant reliability profiles, including deterioration due to corrosion. The results of this study can be used for the better prediction of the service life of deteriorating steel-box girder bridges and the development of optimal reliability-based maintenance strategies.

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