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The Optimum Design for PSC Box Girder Bridges Considering Friction Coefficient and Material Strength  

Kim, Ki Wook (The Ohio-state University)
Publication Information
Journal of Korean Society of Steel Construction / v.18, no.2, 2006 , pp. 181-189 More about this Journal
Abstract
This study analyzes the effects of the curvature friction coefficient, the wobble friction coefficient, and the increased strength of concrete, reinforced tendon on optimum de signs by using the optimum-design program, to minimize the cost of a PSC box girder bridge using the full staging method. The objective of this study is to find a proper tendon for the friction coefficient, and thereafter, to indicate the direction of the study development about tendons and to indicate the direction of a study on the increased strength of used materials. This program used the SUMT procedure and Kavlie's extended-penalty function to allow infeasible design points in the process. Powel's direct method was used in searching design points, and the gradient approximate method was used to reduce the design hours.
Keywords
Optimum design; PSC Box-girder; SUMT; Friction coefficient;
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