ANALYSIS ON THE NONLEAR EARTHQUAKE RESPONSE OF TWO-LAYER DOUBLE-COLUMN SUBWAY STATION STRUCTURE

摘要

The nonlinear earthquake response of two-layer double-column subway station built in Nanjing city is analyzed by ABAQUS finite-element software. In this numerical analysis, the nonlinear characteristics of soil under cyclic loading are modeled by a dynamic nonlinear constitutive model founded by authors which is implemented in ABAQUS software. The nonlinear characteristics of concrete under cyclic loading are modeled by plastic-damage constitutive model founded by Jeeho Lee. The analysis results indicate that there are obviously seismic stress centralization phenomena in those junctions of side walls versus level boards and level boards versus columns. Especially, in the junction of side wall versus medial board and columns versus top or bottom boards. The junctions of subway station should be reinforced for strong earthquakes.