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Seismic response of underground structure in liquefiable soils was analyzed by means of fully coupled dynamic finite element
method. The soils were simulated by a cyclic mobility constitutive model, which is developed at the base of modified Cam-Clay
model with some concepts such as stress induced anisotropy, over-consolidation and structure. It is verified that the constitutive
model can perfectly described the dynamic character of both liquefiable sand and non-liquefiable clay. Special emphasis was
given for the influence of thickness of liquefiable soil on the seismic response. Results showed that soils at both sides
of the structure flowed toward the bottom of the underground structure with the occurrence of liquefaction, which led to the
uplift of structure. The uplift of underground structure increased with the increasing of thickness of liquefiable soils. 相似文献
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