飛翔体衝突を受けるRC構造物の衝撃応答評価

Evaluation on impact response of RC structures subjected to projectile impact

西田 明美  ; 永井 穣*; Kang, Z.   ; 坪田 張二

Nishida, Akemi; Nagai, Minoru*; Kang, Z.; Tsubota, Haruji

飛翔体衝突等が原子力施設内包機器へ与える影響評価に資するため、原子力施設建屋構造における衝撃波伝播特性の把握や衝撃応答挙動の解明を目的とする研究を開始した。飛翔体衝突を受ける鉄筋コンクリート(RC)構造物に関する既往実験結果の再現解析を実施してモデルや評価手法の妥当性を確認し、これら妥当性が確認されたモデルや評価手法を用いて原子力施設建屋の壁等の構造を模擬したRC構造物の衝撃応答解析を実施した。本発表では、飛翔体の剛性の違いが構造物の衝撃応答挙動に与える影響を評価し、得られた知見について述べる。

In order to contribute to the evaluation of influence of projectile impact to the interior component of nuclear facility, we have started research with purpose of grasping the properties of shock wave propagation in nuclear building and elucidating the impact response behavior of the structure. We conducted some impact response analysis and compared the results with the existing experimental data related to the RC panels subjected to projectile impact to confirm the validity of 3D FE model and numerical evaluation method. Then, the impact response of RC structure regarded as the wall structure, etc., of nuclear building was analyzed numerically using the validated 3D FE model and numerical evaluation method. In this paper, the influence of different stiffness of projectile on the impact response behavior of RC structure was investigated through the impact response analysis and the obtained knowledge from the results are presented.