Design and analysis on composite structural system of single-column elevated station

Elevated station with single column and long cantilever is widely used in the urban traffic hub as an integrated system of building and bridge. Composite structure design and structural optimizing were conducted, with the issues of structure modelling, components analysis and seismic performance. Finite element analysis models were built by the software of MIDAS. GEN and MSC. MARC respectively for response spectrum design and dynamic elasto-plastic time history analysis. The results indicate that the fiber model based on the secondary development of MSC. MARC is very applicable to the composite structure modeling as an accurate and efficient tool to simulate the non-linear behavior of composite structure subjected to earthquake action. In addition, the weight of the composite station structure can be reduced for the light weight components, resulting in reducing seismic action, improving seismic performance and achieving cost-effective structural design objective.