Abstract:Referring to the site classification principles in the code for seismic design for buildings, China, site categories for the stations selected from Kik-Net, Japan, were determined.Using the current equivalent linear programs, Shake2000 and LSSRLI-1, for site seismic response analysis, the peak acceleration, response spectra, and shear strain were calculated for different site categories.The calculated results for the different site categories were compared and the calculation discrepancy between Shake2000 and LSSRLI-1 was obtained for the different site categories.In addition, the numerical results were compared to those of real seismic records.The analytical results show that the nonlinearity of the soil dynamic modulus ratio, damping ratio, and site categories have a significant influence on the calculation results.For class I and II sites, the calculated results by Shake2000 and LSSRLI-1 were similar for most cases, while for class III and IV sites, the calculated results by Shake2000 and LSSRLI-1 were similar for the majority of the cases.With respect to real seismic records, the results by SHAKE2000 are better than those by LSSRLI-1, especially for class III and IV sites.For strong nonlinear soil, the results by SHAKE2000 are noticeably better than those by LSSRLI-1.Preliminary analysis indicates that the difference in the calculated results by SHAKE2000 and LSSRLI-1 is due to the difference in the calculated shear strains.
