Based on exploration and taking soil in situ of sea

and soil mass dynamic behavior test research indoors

the residual deformation of revetment structure of a large-scale sea reclamation and land stretch project under earthguake action was analyzed.At first

the dynamic characteristics and residual deformation of foundation soil under complex stress state was researched by resonant column test and numerical simulation methods.Based on this

the change of shear modulus ratio and damping ratio of soil sample with shear strain were obtained.Then through analysis of relationship between residual deformation and vibrational times

and data arrangement and fitting by using Shen Zhujiang′s model

the fitting parameters of Shen Zhujiang′s model were given.Finally

residual deformation rule of revetment structure under earthquake action are obtained

i.e.for different acceteration time histories

the horizontal residual deformation is from 0.07 mto0.66 m

the vertical residual deformation is from 0.035 mto 0.31 m.The deformation exists mainly at both side revetment and the soil layer is mainly sand soil layer.The research findings of this paper may give a reference to relevant seismic design and foundation deformation analysis of sea reclamation and land stretch projects.