First，through a pile-soil interaction shaking table model, this paper simulates the liquefaction process of saturated
sands and measures the strain of a pile，which provides test data for numerical calculation；Second，based on the p-y relationship
of degraded soil，pseudo static method and Winkler foundation beam model are used to simulate the pile bending moment
during the liquefaction of saturated sands，through the pseudo static calculation results and the experimental results contrast
analysis，it is considered that the numerical simulation result is established when the reduction coefficient of inertial force
at the pile top is 0.6.