Seismic Response Analysis Of Ground Anchored Three-towaer Four-span Suspension Bridge

In recent years, with China’s rapid economic development, both engineering theory and construction techniques of bridge traffic engineering have gained rapidly development. The frequent occurrence of earthquake around the world ask for more earthquake-resistance analysis of modern large span bridges. Ground anchored three-tower four-span suspension bridge emerges as a new form in China. This paper took the being built ground anchored three-tower four-span suspension bridge in China for example with a series of seismic analysis and provided useful suggestions and opinions for earthquake-resistance design.This paper briefly introduced the development history and overview of the suspension bridge at home and abroad, and then introduced the impact of the earthquake on the bridge in recent years. Then it introduced the long-span bridge structure earthquake-resistance analysis method, the characteristics of suspension bridge, and the suspension bridge nonlinear analysis methods.In this paper, Professional finite element software MIDAS/civil2010are adopted to model the Yingwuzhou Bridge in Wuhan calculating the dynamic characteristics, and then was used to do the earthquake-resistance analysis with the response spectrum method, the dynamic uniform excitation time-history method, and the non-uniform excitation time-history method. The results of date of the analysis ara compared to draw a series of conclusions.