| Title |
Analytical Study of Ultimate Behavior of Steel Cable-stayed Bridges |
| Authors |
김승준(Kim, Seungjun) ; 임석빈(Im, Seok-Been) ; 이기세(Lee, Kee-Sei) ; 강영종(Kang, Young-Jong) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.2A.085 |
| Keywords |
강사장교;비선형해석;등가 트러스요소;보-기둥효과;극한거동 steel cable-stayed bridge;nonlinear analysis;equivalent truss element;beam-column effect;ultimate behavior |
| Abstract |
This paper presents an investigation on the ultimate behavior of steel cable-stayed bridges using nonlinear finite element analysis method. Cable-stayed bridges exhibit various geometric nonlinearities as well as material nonlinearities, so rational nonlinear finite element analysis should be performed for investigation of the ultimate behavior. In this study, ultimate behavior of steel cable-stayed bridges was studied using rational ultimate analysis method. Nonlinear equivalent truss element and nonlinear frame element were used for modeling the cable, girder and mast. Moreover, refined plastic hinge method was adopted for considering the material nonlinearity of steel members. In this study, the 2-step analysis method was used. Before live load analysis, initial shape analysis was performed in order to consider the dead load condition. For investigation of the ultimate behavior of steel cable-stayed bridges, analysis models which span length is 920.0 m were used. Radiating type and fan type were considered as the cable-arrangement types. With various quantitative evidences such as load-displacement curves, deformed shapes, locations of the yield point or region, bending moment distribution and so on, the ultimate behavior of steel cable-stayed bridges was investigated and described in this paper. |