Comparative Study on Shaking Table Tests for a Pile–Nuclear Island Structure under Different Soil Conditions

In this paper, the shaking table tests of a Seismic–Soil–Pile–Superstructure Interaction (SSPSI) in medium-soft and hard base soil were carried out. Silted clay with unit weight 1.70 g/cm3 shear wave velocity 175 m/s was adopted to simulate soil, while composite obtained by adding 20% quicklime silted 1.75 300 tests. By inputting artificial seismic motion time history different amplitudes synthesized RG1.60 response spectrum commonly used nuclear power engineering models, dynamic interaction characteristics laws soil–pile–nuclear island structure compared, internal force deformation distribution pile foundation under ground conditions analyzed, site mechanism failure group described. The research results can provide reference for selection design plant.