Seismic Response Analysis Of Subway Station Consider The Soil-structure Under The Conditions Of Dynamic Contact

China located in Europe and Asia and the Pacific Rim seismic belt, between the seismic belt is a wider distribution of seismic activity. So, China is a multi-earthquake country. In the region, more than 60% of the total area's defensive zone on the basic seismic intensity is above of 6 degree. More then 50% in 381 cities and more then 70 in 20 million people cities are above of 7 agree. Since this century, our country took place two strong earthquakes approximately every three years, at least one of them is a disaster. It is worth noting that in most parts of China's earthquake-prone areas, many cities are located in, And in the high-intensity earthquake regions, large-scale subway's construction is in only the past two decades, most of them have not been a major earthquake test.A long time, people generally felt that the ground floor of the structure bound by the surrounding soil, their damages in the earthquake is a very low percentage, so except in special circumstances, pepole believed that earthquakes on the ground floor of the structure has little effect. However, the January 17, 1995, southern Hyogo Prefecture in Japan occurred in the 7.2 Richter " Hanshin Earthquake". Subway station's damage on the Hanshin earthquake is much more serious than the tunnel. Among them, the large-scale subway station's middle columns damage are very serious: 35 columns completely crushed, exposure of reinforcing bars became into a song-like, the roof collapsed into a "M" type, leading to the top of ground subsidence, the maximum value reach to 2.5m, seriously impacted ground transportation. Hanshin earthquake caused the most severe damage to the Kobe city's underground structures such as the subway, underground parking, underground tunnel and the Commercial Street. Hanshin earthquake truly give a wake-up call to the Earthquake resistance study.Subway station as a result of large investment and large in scale, is the city's "lifeline". To reduce earthquake damage and loss, subway station caused by seismic design importance of States, the United States, Japan and other developed countries have studied on the Seismic Design of Underground Structures and carried out a series of practical seismic analysis method.In this paper, according to DU xiu-li and Liu ing-bo's revised theory of viscoelastic artificial boundary, using the ANSYS finite element analysis software, Considering the structure and the soil's dynamic contact's explicit finite element method, Proposed and the establishment of the Parameterized model, which is used to analyze subway station's Seismic response in single-phase medium. In the P wave and SV wave, the subway station seismic response considered the impact of Soil materials, station depth, high-span ratio, structure type and the thickness. Summarized and given the subway stations time-displacement reaction and deformation law in the earthquake, provided a basis for seismic design of MTR stations.