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Experimental Study for Ultimate Behavior of Steel Cable Stayed Bridge Under Construction

실험을 통한 시공 중 강사장교의 극한거동 연구

  • Lee, Kee Sei (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kim, Seung Jun (Texas Transportation Institute, Texas A&M University) ;
  • Choi, Jun Ho (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kang, Young Jong (School of Civil, Environmental and Architectural Engineering, Korea University)
  • Received : 2011.09.28
  • Accepted : 2012.12.06
  • Published : 2012.12.27

Abstract

The girders of cable stayed bridge are subjected to not only the bending moments but also additional compressive axial forces due to the horizontal components of cable forces. Because of these axial forces, the stiffness of girder can be decreased, and this problem should be considered especially for under-construction model rather than the full model. Korean domestic design specification suggests the linear elastic eigen value analysis for the stability problem of cable stayed bridges. However, this method cannot be applied to the under construction model because various geometric nonlinear characteristics cannot be considered. Therefore, in this study, 3 models which are assumed to be constructed by balanced cantilever will be considered experimentally and analytically to analyze the behavior of steel cable stayed bridges.

Acknowledgement

Grant : 강사장교의 좌굴안정성 평가기법개발

Supported by : 고려대학교

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