| At present, China is at the great development period of high-speed railway construction, the total mileage of the high-speed railway lines which are being built or to be built will reach 10,000 kilometers, due to the large-scale use of bridges instead of roads, the total length of bridges has reached 70% to 80% of the length of lines, and the majority of them are simply supported or continuous box-girder bridge. With the construction of a large number of passenger dedicated lines, the studies of various properties of railway bridge are increasing depth. China is a earthquake-prone county, Once the bridges which are considered as the lifeline projects are destroyed, the secondary disasters will aggravate, leading to more serious losses of life, property and economic. Therefore, analyzing the rule of seismic response of this kind of bridges is of great practical significance.In this thesis, the basic theory of seismic response analysis is introduced firstly, then, seismic response spectrum analysis and time-history analysis of BaHe Continuous Girder Bridge are performed, the main contents are: 1. In accordance with whether considering the Pile-Soil Interaction, establishing two sound space finite element models respectively; 2. Analyzing the free vibration characteristics of the two models respectively, and coming to the conclusion about the characteristics of the inherent period and vibration mode of structure; 3. With the method of response spectrum and dynamic time-history, analyzing the response of the bridge structure respectively under Uniform Excitation; 4. Analysis of the effect of the Pile-Soil Interaction on seismic response of bridges, and by comparation coming to some meaningful conclusions; 5. Contrasting the calculation result of response spectrum method and time-history analysis method, and summarizing the law.The analysis methods and achievements of this thesis may provide a reference for the seismic design of continuous girder bridge of passenger dedicated line.
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