発電用新型炉に適用する3次元免震装置の開発; 油圧機構によるロッキング抑制機能をもつ3次元免震装置の開発

Development study on hydraulic three-dimensional seismic isolation system applied to advanced nuclear power plant; Development study on hydraulic rocking suppression system

島田 貴弘*; 大谷 章仁*; 岩本 浩祐*; 北村 誠司 

Shimada, Takahiro*; Otani, Akihito*; Iwamoto, Kosuke*; Kitamura, Seiji

高速増殖炉に適用する3次元免震装置として、油圧機構を用いたロッキング抑制装置の開発を進めている。本報告では、1/2サイズ試験体による耐圧試験を行い、想定される高圧下での摺動特性及び耐圧性を確認したことについて述べる。

Three dimensional seismic isolation devices have been developed for the base isolation system of the Fast Breeder Reactor that is an advanced nuclear power buildings. The developed seismic isolation system consists of the hydraulic type vertical springs with rocking suppression mechanism and the laminated rubber bearings for horizontal direction. In this paper, it is reported the frictional characteristics on high hydraulic pressure condition from the experiments on the 1/2 size of real device and the results of the seismic simulation on the real size building with isolation-device that has those characteristics.