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http://dx.doi.org/10.11112/jksmi.2010.14.4.102

Reliability-Optimal Design Method of High-Speed Railway Bridges Based upon Expected Life-Cycle Cost  

Lee, Woo-Sang (한국스마트구조시스템연구원)
Bang, Myung-Seok (충주대학교)
Han, Sung-Ho (충남대학교 토목공학과)
Lee, Chin-Ok (충남대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.14, no.4, 2010 , pp. 102-110 More about this Journal
Abstract
The reliability evaluation may be a efficient method for estimating of the quantitative structural safety considering the effect of uncertainties included in high-speed railway bridges. The expected life-cycle cost(LCC) based upon the reliability evaluation will reasonably offer the safety level and design criteria of high-speed railway bridges. Therefore, this study determined the expected life-cycle cost and optimal design method of high-speed railway bridges on the basis of the result of the numerical analysis and reliability evaluation. For this, after creating various design method based upon the standard design of high-speed railway bridges, the numerical analysis is conducted on each of the alternative design methods. The reliability evaluation by the design strength limit state function is conducted considering the effect of external uncertainties on the basis of the numerical analysis result. The expected life-cycle cost of high-speed railway bridges is calculated on the basis of the reliability evaluation result by each of the alternative design methods. Also, the optimal design method is determined using the calculated expected life-cycle cost. In addition, The result of reliability evaluation and expected life-cycle cost of optimal design method are examined considering the effect of internal uncertainties. It is expected that the result of this study can be used as a basic information for the systematic safety evaluation and optimal structure design of high-speed railway bridges.
Keywords
High-Speed Railway Bridges; Reliability Assessment; Design Strength Limit State Function; Safety Level; Expected Life-Cycle Cost; Optimal Design;
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Times Cited By KSCI : 2  (Citation Analysis)
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