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http://dx.doi.org/10.11112/jksmi.2014.18.2.047

Reliability Analysis Model for Deflection Limit State of Deteriorated Steel Girder Bridges  

Eom, Jun-Sik (상지대학교 건설시스템공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.2, 2014 , pp. 47-53 More about this Journal
Abstract
The paper investigates the limit state of deflection for short and medium span steel girder bridges. Deflection depends on stiffness of steel girders and integrity of the reinforced concrete slab (composite action). Load and resistance parameters are treated as random variables. A probabilistic model is developed for prediction of the deflection. The structural performance can be affected by deterioration of components, in particular corrosion of steel girders. In addition, the creep of concrete can greatly influence the deflection of composite structures. Therefore, the statistical models for creep and corrosion of structural steel are incorporated in the model. Structures designed according to the AASHTO LRFD Code are considered. Load and resistance models are developed to account for time-variability of the parameters. Monte Carlo simulations are used to estimate the deflections and probabilities of serviceability failure. Different span lengths and girder spacing are considered for structures designed as moment-controlled and deflection-controlled. A summary of obtained results is presented.
Keywords
Structural reliability; Resistance model; Steel girder bridge; Limit state function;
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Times Cited By KSCI : 1  (Citation Analysis)
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