Intercomparison of analysis methods for seismically isolated nuclear structures (KAERI HLRB and CRIEPI Isolated Rigid Mass Mock-Up)

The combined shear and compression behaviors of the KAERI HLRB made of MRPRA rubber and the shaking responses of the CRIEPI isolated rigid mass mock-up are analyzed. For FEM analyses of KAERI HLRB, three kinds of strain energy density functions of the ABAQUS program are used as constitutive law for rubber with hyperelastic characteristics. The analysis results are compared with test results, depending on the constitutive models. The simulation results for the shaking table tests of the CRIEPI rigid mass mock-up supported by scaled lead rubber bearings are obtained by ABAQUS time history analyses. In the analysis, the linear and bilinear hysterisis models simulating the behaviors of the rubber bearing are used. (author)