非線形3次元FEMによる原子力発電所建屋のひずみエネルギーに基づくフラジリティ評価の試み

概要

論文の詳細を見る
The probabilistic safety assessment (PSA) is important for nuclear power buildings in Japan because the risk of the occurrence of seismic ground motions beyond the design seismic level cannot be denied. In this paper, the building fragility of the seismic PSA was evaluated using a three-dimensional nonlinear FEM building model considering soil-structure interaction and basemat uplift behavior. The response analyses were conducted increasing the input acceleration up to 3500 Gal, until the damage of the building reached the ultimate condition. Although the shear strain of the building is used for the fragility index in general, the consumed strain energy was investigated for the index to consider the effect of the vertical seismic motion in addition to the horizontal motion. As a result, it is considered that the energy index could be an applicable option for seismic PSA estimation in the future.
一般社団法人日本建築学会の論文
2011-03-25