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Initial Equilibrium State Analysis of Cable Stayed Bridges Considering Axial Deformation  

Kim, Je Choon ((주)대우건설)
Chang, Sung Pil (서울대학교 지구환경시스템 공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.14, no.4, 2002 , pp. 539-547 More about this Journal
Abstract
The study proposed the initial equilibrium state analysis method that considers axial deformation, in order to accurately determine the initial shape of a cable-stayed bridge. Sepecifically, the proposed method adopted the successive iteration method. In order to evaluate appropriate initial cable force introduced in the initial equilibrium state analysis, parametric studies were performed and a useful linear analysis method proposed. The geometrically nonlinear static behaviors of cable-stayed bridges were considered, using three-dimensional frame element and elastic catenary cable element. The usefulness and applicability of the analytic method proposed in this study were demonstrated using numerical examples, including a real cable-stayed bridge. The algorithm, is applicable in cases wherein axial deformation is not adopted in the fabrication camber, or final cable force is adjusted to eliminate construction and fabrication errors occurring during construction.
Keywords
Cable Stayed Bridge; Initial Equilibrium State; Axial Deformation; Cable Force; Successive Iteration Method;
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