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Closing Step Analysis in Cable-Stayed Bridges to Produce Initial Equilibrium Condition  

Park, Yong Myung (부산대학교 토목공학과)
Yun, Jae Sun (부산대학교 토목공학과)
Cho, Hyun Jun (부산대학교 토목공학과)
Park, Chung Gon (부산대학교 토목공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.19, no.2, 2007 , pp. 191-199 More about this Journal
Abstract
This paper presents a closing method for a cable-stayed bridge erected by the free cantilever method to produce the initial equilibrium configuration at the final construction stage. To realize the initial equilibrium condition in cable-stayed bridge by the cantilever method, compatibility conditions for vertical displacements, rotational angles, and axial displacements at the closing section of both side girders should be satisfied. In this paper, it was shown that it can be accomplished by using some applicable loads during construction such as the pull-up force of the derrick crane, some cable tension forces, and jacking force at the pylon. The proposed method was applied to a construction stage analysis of a sample bridge to demonstrate its validity, and it was acknowledged that the tower was considerably affected by the compatibility condition for axial displacement in the closing step.
Keywords
cable-stayed bridges; cantilever method; closing analysis; displacement compatibility conditions; tower;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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