| Title |
Construction Stage Analysis of Cable-Stayed Bridges Using the Unstrained Element Length Method |
| Authors |
박세웅(Park, Se Woong) ; 정명락(Jung, Myung Rag) ; 민동주(Min, Dong Ju) ; 김문영(Kim, Moon Young) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.6.0991 |
| Keywords |
시공단계 해석;사장교;무응력길이법;유한요소해석;초기형상해석 Construction stage analysis;Cable-stayed bridge;Unstrained length method;Finite element analysis;Initial shape analysis |
| Abstract |
The propose of this study is to demonstrate how efficiently and accurately the construction stages of cable-stayed bridges are analyzed using the unstrained length method (ULM) in which all unstrained element lengths are determined from a simplified analytical method (Jung et al., 2015). A forward analysis of cable-stayed bridges using the commercial FEA program, MIDAS is sequentially carried out considering the lack of fit force but the ULM is able to analyze a intermediate construction stage directly by taking the corresponding unstrained lengths of the construction stage model simply. The closing load step analysis is achieved by loading the pavement and counter weight forces in reverse. An Incheon bridge model is analyzed using the present ULM and the commercial program, respectively, and the two analysis results are compared. |