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Abstract According to the limitation of existed methods used to analyze the earthquake response of soil-structure dynamic interaction，the nonlinear static and dynamic coupling interaction of soil-underground structure theory and calculation model are developed. Based on the model，the earthquake response and damage mechanism of subway station with two layers and three spans are analyzed，respectively. The research results show that：(1) Under the static and dynamic coupling loadings，the damage orders of subway station members are obtained in detail. The lower surface of middle slab near to the lateral wall is damaged firstly；and the severely damages take place on the ends of middle columns. The lower surface of the top slab near to the lateral wall，the upper surface of bottom slab on the side span，and the upper surface of top slab near to the middle column are damaged in turns. (2) As a whole，the ends of middle columns and the bottoms of lateral walls are damaged more easily and severely. The members of subway station are almost damaged by tensioning or compressing respectively when weak earthquake ground motion is inputted. However，when the earthquake ground motion become stronger，these members are damaged by tensioning and compressing simultaneously. (3) At the same time，the subway station may be damaged more easily and severely by near field earthquake.
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Received: 20 May 2010
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2011, Vol. 30 
