[3C07-09] Seismic PRA 1

[3C08] Improvement of fragility evaluation method on seismic PRA

(5)Study on building fragility evaluation considering nonlinear dynamic analysis

*Akira Ota¹, Takeshi Ugata¹, Masatoshi Okada², Hiroyuki Yamada³, Katsumi Ebisawa³ (1. TAISEI, 2. YONDEN, 3. CRIEPI)

Keywords:Fragility evaluation, Dynamic nonlinear, Seismic response analysis, FEM

In order to contribute to the more realistic seismic fragility evaluation, the authors proposed a fragility evaluation method considering the dynamic nonlinear response of the building, and confirmed the feasibility of the method on actual plants by trial evaluation.In this report, we evaluated the floor response of equipment requiring fragility evaluation in the high acceleration region by seismic response analysis model (FEM model of ground and foundation + lumped mass model of building) that can be evaluated more realistically. In addition, we investigated the influence of building dynamics nonlinearity on the fragility evaluation and confirmed the feasibility of this method.