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

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 proceeding › Conference 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 language	English
Title of host publication	Bridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management
Pages	2710-2715
Number of pages	6
Publication status	Published - 2010 Dec 1
Event	5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010 - Philadelphia, PA, United States Duration: 2010 Jul 11 → 2010 Jul 15

Other

Other	5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010
Country/Territory	United States
City	Philadelphia, PA
Period	10/7/11 → 10/7/15

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality
Building and Construction
Architecture

Cite this

Reliability based design optimization of steel box girder bridge under corrosion attack. / Son, N. V.; Jeong, M. C.; Kim, S. H. et al.
Bridge Maintenance, Safety, Management and Life-Cycle Optimization - Proceedings of the 5th International Conference on Bridge Maintenance, Safety and Management. 2010. p. 2710-2715.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Son, NV, Jeong, MC, Kim, SH & Kong, JGS 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. 2710-2715, 5th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2010, Philadelphia, PA, United States, 10/7/11.

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AB - 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.

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

Abstract

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ASJC Scopus subject areas

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