| Title |
Effects of Geometric Characteristics on the Ultimate Behavior of Steel Cable-stayed Bridges |
| Authors |
김승준(Kim, Seungjun) ; 신도형(Shin, Do Hyoung) ; 최병호(Choi, Byung Ho) ; 강영종(Kang, Young Jong) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6A.327 |
| Keywords |
강사장교;비선형해석;등가 트러스요소;보-기둥효과;극한거동 steel cable-stayed bridge;nonlinear analysis;equivalent truss element;beam-column effect;ultimate behavior |
| Abstract |
This study presents the effects of various geometric properties on the ultimate behavior of steel cable-stayed bridges. In general, cable-stayed bridges are well known as a very efficient structural system, because of those geometric characteristics, but at the same time, the structure also shows complex structural behavior including various nonlinearities which significantly affect to the ultimate behavior of the structure. In this study, the effects of various geometric properties of main members on the ultimate behavior under specific live load cases, which had been studied in previous studies, were investigated using a rational analytical method. In this parametric study, sectional dimensions of main members were considered as main geometric parameters. For the rational ultimate analysis under specific live load cases, the 2-step analysis method, which contains initial shape analysis and live load analysis, was used. As the analysis model, 920.0 m long steel cable-stayed bridges were used and two different types of cable arrangement were considered to study the effect of the cable arrangement types. Through this study, the effects of various geometric properties on the characteristics of the ultimate behavior of steel cable-stayed bridges were intensively investigated. |