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| Analysis of the random responses to earthquake of the subsoil-base-interaction isolated system |
| Revised:June 11, 2003 |
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| DOI：10.7511/jslx20052051 |
| KeyWord:soil-structure,isolation,random response |
| ZOU Li-hua~ |
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| Abstract: |
| With the impact of subsoil on structure modeled by a spring-viscous restraint, the random responses to earthquake of the base-isolated system is analyzed in this paper, with the earthquake excitation simulated as a smooth random process and the subsoil taken as an isotropic elastic semi-space. The influences of the site soil and damping of the isolating floor on structural responses to earthquake are discussed respectively. The result indicates that the properties of the subsoil have a direct impact on the isolated system, which is much smaller than that on the non-isolated system. |
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