Abstract
In connection with the practical project of Kunminglu station of Tianjin subway Line 3 in soft soil sites, the finite element method model based on soil-structure interaction was established by using ANSYS program. Additionally, this paper analysed the static calculation and the dynamic interaction system of underground soil-structure, obtained the acceleration time histories of seismic response, and concluded that what are mechanical characteristics of subway station structure under the static and dynamic load. Possible damage to subway station brought about seismic response and seismic weak links of subway station structure under the action of horizontal earthquake is analyzed.
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