3次元実形状モデルを用いた高温工学試験研究炉の原子炉建家と排気筒の衝突解析

Evaluation of impact with high temperature engineering test reactor using realistic model of stack and reactor building

小野 正人 ; 藤原 佑輔 ; 松本 哲郎*; 飯垣 和彦 

Ono, Masato; Fujiwara, Yusuke; Matsumoto, Tetsuro*; Iigaki, Kazuhiko

これまでの竜巻起因の飛来物に対する原子炉建家の健全性評価は、単純な形状の飛来物に対する経験式を用いて、飛来物の貫入、裏面剥離、貫通といった局所的な破壊モードを予測している。しかしながら、現実的には原子炉建家の周辺には排気筒等の複雑な形状の建物・構築物があり、それらが原子炉建家に衝突するおそれがあるものの、従来の評価式では複雑な形状の飛来物に対する評価は困難である。そこで本研究では、複雑な形状の飛来物の衝突を想定し、原子炉建家の健全性を評価する手法を検討した。

Integrity confirmation for buildings against collisions of projectiles has been conducted to evaluate collisions between a projectile with simple shape and a wall using empirical formulas. It is a matter of fact, there is a possibility that structures with complex shape such as stack may collide with a reactor building. However, there were not so many studies of collisions between structures with complex shape and buildings in the literature. Impact evaluation was carried out using reactor building and stack with real shape and adequate physical property. It was found that ceiling of reactor building was not damaged by the collision, confirming that there was no effect inside of reactor building.