617 発電用新型炉へ適用する 3 次元免震システムの研究 : 二重金属ベローズ : その 1

概要

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The authors proposed a new simple 3-dimensional seismic isolator concept for a commercial fast breeder reactor (FBR) building. The isolator consists of common reliable industrial parts, metallic bellows and lead rubber bearing (LRB). Air pressurized metallic bellows is for vertical isolation and LRB is for horizontal. The isolation frequencies are 0.5Hz for horizontal and 0.56Hz for vertical respectively. The maximum vertical displacement to absorb is 400mm and the vertical load of 9807kN should be supported per each isolator. A conceptual design was performed for these design requirements and a scale model test was carried out to confirm the feasibility of the concept.
2002-09-13