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Optimal Strengthening in RC Hollow Slab Bridges Using External Prestressing  

Park, Kyung-Sik (경북대학교 건축토목공학부)
Choi, Se-Hyu (경북대학교 건축토목공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.13, no.6, 2009 , pp. 204-211 More about this Journal
Abstract
In this study, the optimal method is applied to strengthening of RC hollow slab bridges using external prestressing. The Queen-post and King-post shapes are considered to find the effective tendon configurations. In order to achieve the objective rating factor, the optimal configurations and tendon forces are obtained by using the Sequential Unconstrained Minimization Technique (SUMT). The object function for optimal strengthening is constituted with the dimensionless function of material costs. The constraints are formulated by design specification and the rating factor. The validity of this study is presented by the analysis of the results of strengthening of the RC hollow slab bridges.
Keywords
External prestressing; RC hollow slab bridge; Optimal strengthening;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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