Development of seismic isolation device for sodium fast reactor plant, 4; Assembly test of 3D isolation device

Yukawa, Masaki*; Morobishi, Ryota*; Yamamoto, Tomohiko  ; Hirayama, Tomoyuki*; Yokoi, Shinobu*

A half-scale combined test specimen was fabricated for a three-dimensional seismic isolation device in which thicker laminated rubber bearing and disc spring units are arranged in series, and a static loading test was carried out by simultaneous loading in both the horizontal and vertical directions. The test results demonstrated that this three-dimensional seismic isolation device maintained the specified design performance and smooth operation, and the device concept was established.