| Title |
A Simplified Analysis Method for Determining an Optimized Initial Shape of Cable-Stayed Bridges |
| Authors |
정명락(Jung, Myung Rag) ; 박세웅(Park, Se Woong) ; 민동주(Min, Dong Ju) ; 김문영(Kim, Moon Young) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.6.0947 |
| Keywords |
간략해석법;사장교;무응력길이법;초기형상해석;기하비선형 유한요소법 Simplified analysis method;Cable-stayed bridge;Unstrained length method;Initial shape analysis;Geometrically nonlinear finite element method |
| Abstract |
A simplified analysis method is first proposed in order to determine an optimized initial shape of cable-stayed bridges including all unstrained element lengths without using complicated nonlinear FE analysis. The unstrained-length based FE method is then presented using the unstrained lengths by the simplified analysis. To demonstrate validity and accuracy of the proposed method, Incheon bridge model having the fabrication camber is constructed and initial shaping analysis is performed using the presented method and commercial finite element analysis program, MIDAS. Resultantly it is shown that the initial solutions by the proposed algorithm are well optimized and in good agreement with those by MIDAS except for axial displacements of the main member. |