Nonlinear seismic response analysis of an embedded reactor building based on the substructure approach |
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| Authors: | M Hasegawa T Ichikawa S Nakai T Watanabe |
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| Affiliation: | 1. School of Geosciences and Info-Physics, Central South University, South Lushan Road, Changsha 410083, China;2. Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen 518055, China;4. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education, School of Geoscience and Infophysics, Central South University, Changsha 410083, China;5. Hydro-China Xibei Engineering Corporation, Institute of Geophysical Exploration, Xi''An 710043, China;6. National Engineering Research Center of High-speed Railway Construction Technology，Changsha 410075, China;7. Institute of Geophysics and Geomatics, China University of Geosciences 388 Lumo Road, Wuhan, Hubei 430074, China |
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| Abstract: | A practical method to calculate the elasto-plastic seismic response of structures considering the dynamic soil-structure interaction is presented. The substructure technique in the time domain is utilized in the proposed method. A simple soil spring system with the coupling effects which are usually evaluated by the impedance matrix is introduced to consider the soil-structure interaction for embedded structures. As a numerical example, the response of a BWR-MARK II type reactor building embedded in the layered soil is calculated. The accuracy of the present method is verified by comparing its numerical results with exact solutions. The nonlinear behavior and the soil-structure interaction effects on the response of the reactor building are also discussed in detail. It is concluded that the present method is effective for the seismic design considering both the material nonlinearity of the nuclear reactor building and the dynamic soil-structure interaction. |
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