An improved substructure shaking table test method was proposed in this paper to simulate the long-period seismic response of tall buildings approximately.The amplification effect of mass and rubber device installed at the bottom of substructure was used to break through the acceleration input limit of conventional shaking table test.The new input ground motion of substructure model was back-derived through the definition of convolution between the transfer function and the target acceleration response of whole structure.The linear seismic time-history response analysis of whole structure model with twenty-storeys and substructure model with two storeys were established respectively based on SAP2000 finite element analysis software.Compared with the response subjected to different earthquake

the results show that the target acceleration response of substructure model agrees well with that of whole structure model.The research results have some reference meaning for the space scale and load application of earthquakesimulating shaking table test

and provide a new research method for simulating the long-period seismic response of tall buildings.