Seismic response analysis of underground structures

Earthquake resistance design of underground structure and seismic safety evaluation is an important subject of urban disaster prevention and mitigation as the underground railuay develops rapidly.In order to study the affect of plane S waves on the structure,finite element software ABAQUS has been used to establish a typical subway station model.After analyzing the stress of each component intersection point,the following conclusions are got: the maximum stress occurs on the exterior wall,and the maximum stress of interior wall occurs at the intersection point of wall and floor.Component intersection points of column and floor,column and second floor,column and roof are the place that the maximum stress happens at,and the maximum stress of floor appears at intersection points of floor and two side walls.Therefore,more attention should be paid to these positions in the process of design and construction of underground struction.