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http://dx.doi.org/10.7734/COSEIK.2014.27.6.643

Evaluation of Reliability Index of Governing Load Combination for Design of Cable Supported Bridge Members  

Paik, Inyeol (Department of Civil and Environmental Engineering, Gachon University)
Yoon, Taeyong (Department of Civil and Environmental Engineering, Gachon University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.27, no.6, 2014 , pp. 643-651 More about this Journal
Abstract
In this paper the reliability analyses of the cable-supported bridge design code which is recently issued in Korea are performed and the results are presented. Governing load combinations for the member design and the statistical properties of the main members are introduced and the analysis is performed using an example cable-stayed bridge for which the design is performed following the load and resistance factors defined in the design code. The reliability analysis shows the target reliability index can be achieved by applying load and resistance factors and the application of the resistance modification factor can enhance the reliability level if the importance of the bridge needs to be increased. The sensitivity analysis reveals that decreasing uncertainty of the cable strength is critical for obtaining the target reliability index. The study results show that the design using the load and resistance factors of the code can achieve the target reliability indexes for the design of cable supported bridge.
Keywords
cable-supported bridge; limit state design; target reliability; load and resistance factor; resistance modification factor; sensitivity analysis;
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