Seismic Response Analysis Of Large Span PC Continous Beam Bridge

Our country is an earthquake-prone area. In recent years, multiple large Earthquake happened in our country in succession, which bring about the serious destruction of road infrastructure. As an important part of the road, bridge plays a key role in the whole line. If bridge is not open to traffic because of the destruction of earthquake, it will break off the whole line and impede the rescue work, thus affect the lives and safety seriously.The most universal bridge type in the practical project is long-span continuous bridge, which have a large proportion in the land. Therefore, the probability of the destruction is greater when the earthquake happens. Thence, the analysis and research for its seismic performance is particular important.Based on the background of the Baisha Bridge, which located in the Luxi Ring Road, G309 National Highway, Xiangxi Autonomous Prefecture.After a brief narration and summary for the current bridge seismic analysis for the engineering background, I have selected two type of analysis method which is widespread at the present in the practical seismic analysis to carry out seismic analysis for engineering background. The main reached content as follows:1.Through the professional finite meta-analysis software(Midas/civil) for civil structure, I set up the finite mata-propulsion computational model for the Baisha Bridge, and consider under the premise of a high-rising structure interaction on the analysis of its dynamic characteristics.2.According to the design of earthquake intensity, the dissertation have an analysis of seismic reflection spectrum on the basis of the confined meta-model of Baisha Bridge, so as to discuss the impact on bridge structure of different design parameter.3.The input of seismic waves according to the seismic design intensity. Under the consistent motivation of the finite meta-model of Baisha Bridge, the time history analysis of earthquake should be carried on. Moreover, its results should be contrasted with the results of the response spectrum analysis.