Reliability based design optimization of steel box girder bridge under corrosion attack

N. V. Son, M. C. Jeong, S. H. Kim, Jun g Sik Kong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the method to solve reliability based design optimization (RBDO) of steel box girder bridge using computer program which is developed by integrating Matlab optimization toolbox and reliability analysis subroutine. Moreover, the effect of environmental agents is considered in terms of modeling the uniform corrosion phenomena which reduced the ultimate and service capacity in the structural lifetime. All reliability constraints are formulated in term of ultimate and service limit state functions according to AASHTO code. The general procedure of optimization analysis is proposed and applied to the simply support steel box girder bridge with reinforced concrete slab. In the optimization process, the steel box girder is represented by a number of deterministic design variables including the depth of girder, the thickness of web, top flange, and bottom flange. Sensitivity analysis is performed for investigation the effect of span length and target reliability index level on the optimum solution.

Original languageEnglish
Title of host publicationBridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management
Pages2717-2722
Number of pages6
Publication statusPublished - 2010 Dec 1
Event5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010 - Philadelphia, PA, United States
Duration: 2010 Jul 112010 Jul 15

Other

Other5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010
CountryUnited States
CityPhiladelphia, PA
Period10/7/1110/7/15

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ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Building and Construction

Cite this

Son, N. V., Jeong, M. C., Kim, S. H., & Kong, J. G. S. (2010). Reliability based design optimization of steel box girder bridge under corrosion attack. In Bridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management (pp. 2717-2722)