MULTI-SCALE FE MODELING TECHNIQUE AND ITS APPLICATION ON STEEL BOX GIRDER OF RUNYANG SUSPENSION BRIDGE
A reliable and applicable finite element (FE) model is the basis of the research works, but the traditional spine FE model of long span bridges can not satisfy the needs of structural health monitoring and condition assessment. Therefore, it is necessary to conduct multi-scale FE modeling orient to different research objectives and requirements. The Runyang Suspension Bridge (RSB) is taken as an example. In order to increase the accuracy of analysis results, a 3-dimensional whole FE model for the RSB is established with FE program ANSYS and the spatial submodel of the steel box girder is then particularly established. After the feasibility and superiority of the submodel method is demonstrated, the connection of the multi-scale models is realized based on the submodel method. On the basis of the analysis results from the whole model and the connection of these two models, the local stress of the steel box girder under various vehicle loads is calculated with the submodel method.The calculation values are proved to be accurate by the measurements of the field test, which shows that the efficiency and reliability of the multi-scale FE models and the connection technique with the submodel method. The results obtained in this paper can not only provide research basis for health monitoring and condition assessment of the RSB, but also have theoretic references for analyzing and designing the steel box girder of other long span bridges.
Suspension bridge Multi-scale Finite element (FE) modeling Steel box girder Submodel method
Hao Wang Ai-Qun Li Qi-fei Chen Tong Guo Chen Wang
College of Civil Engineering, Southeast University, Nanjing 210096, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
1684-1689
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）