ABSTRACT
ABSTRACT This paper presents a study of dynamic responses of underground structures based on “World Expo” underground structure in Shanghai. Analysis is performed using the open source finite element framework OpenSees. A typical section of four-storey thirteen-span “World Expo” underground structure is adopted to analyse by using dynamic time-history analysis. 2D Opensees numerical analysis model is performed to compare displacement and acceleration of each soil layer. Shear force, moment of structure components, such as side walls, beams, columns and slabs, are analyzed to obtain the seismic response pattern of the structure. FEA (finite element analysis) model with super-structure and FEA model without super-structure are built to compare different responses during seismic response.
