Static And Dynamic Characters Analysis On Through Concrete-filled Steel-tabular Arch

In recent years, our country economy stability increases and the scientific technology develops quickly, more investment is put into the fundamental facilities, we accomplish a lot of great construction of bridges and a large improvement also be made in bridge construction technology. With the high capacity, strong spanning abiltiy, good seismic behavior and convenience of construction, Concrete-filled steel tubular (CFST) arch bridge develops rapidly and is a quickest-developing structure of bridge, which was built sincel990.As a kind of new bridge-style, Concrete-filled steel-tubular arch bridge are used more and more extensive in the field of bridge building, so the analysis on it is more and more importment.Based on Through Concrete-filled Steel-tabular Arch, the thesis discuss and analyze it's static and dynamic behavior with large-scale FEM software. The paper contains three parts:(1)Simulate all kinds of the loads in construction stage and the system change of bridge, the shrinkage, creep, differences of full temperature and part temperature, forced condition in the stage of operation.Above all,having a fulling calculation about the static behavior of the bridge.(2) Calculate the strcutural self-vibration characteristics. Then the seismic response characteristics calculated by the means of the response spectrum analysis and the time history analysis, and have the analysis and comparison between different seismic waves under the direction of structural response.(3) The stability of the bridge was calculated, and discusses the stability factor and instability mode of the bridge in different conditions.