In order to study the dynamic response of subway station structure subjected to surface ground explosion

a simplified model of airblast forces is demonstrated in detail. Whereafter

the improved concrete dynamic Cam-Clay model of soil and the concrete damaged plasticity constitutive model are used for the dynamic analysis of subway station when 100 kg TNT detonates on ground surface. Meanwhile

the influences of soil stiffness and buried depth on dynamic response of subway station are taken into consideration. Finally

the dynamic response of station structural subjected to far-field explosion wave is analyzed. The results show that

the central roof of station has small tension damage. When the buried depth is less than 5 m

the dynamic stress is larger. The smaller the covering soil stiffness is

the more energy of the explosion the covering soil absorb. As the frequency of the explosion waves is very larger

the dynamic stress of the station subjected to far-field explosion wave is smaller. The results will be benefit anti-explosion design of underground structures.