Seismic simulation analysis of a nuclear reactor building using observed earthquake records

In this paper, to verify the effectiveness of dynamic response analysis technique, simulation analyses using observed records of five different earthquakes are performed for the reactor building of Unit 6 of the Fukushima Daiichi Nuclear Power Plant. A sway-rocking model (SR model) with embedment effect is adopted for the analyses. The model properties of the structure and soil springs are estimated by using the results of the forced vibration test. The soil properties are estimated by referring to the observed records of free field and the soil test data. The flow of the process for establishing the model properties is shown