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剛および柔飛翔体の斜め衝突によるRC構造物の局部損傷評価

Evaluation of local damage to reinforced concrete structure subjected to oblique impact of rigid and soft missiles

西田 明美  ; Kang, Z.   ; 坪田 張二

Nishida, Akemi; Kang, Z.; Tsubota, Haruji

飛翔体の衝突に関する研究の多くは垂直衝突が主であり、特に飛翔体の斜め衝突に関する鉄筋コンクリート(RC)版の局部損傷の既往実験データはほとんどみられない。そこで本研究では、数値解析により飛翔体の斜め衝突によるRC版の局部損傷を評価することとした。これまで、Suganoらが実施した飛翔体による既往局部損傷実験結果の再現解析を実施し、解析モデル・解析手法を検証している。本発表では、妥当性の確認された解析モデルおよび解析手法を用いて、飛翔体の衝突によりRC版に生じる局部損傷等に係る飛翔体の剛性および衝突角度の影響について検討した結果を報告する。

Many researches have been performed for evaluating local damage to reinforced concrete (RC) structures caused by perpendicular impacts of rigid projectiles. Up to now, few impact tests oblique to the target structures have been carried out. This study has been conducted with the purpose of proposing a new formula for evaluating the local damage caused by oblique impacts based on previous experimental and simulation results. In this paper, the results of simulation analyses for evaluating the local damage to a RC panel subjected to normal and oblique impacts by missiles, by using the analytical method that was validated using the results of previous impact experiments. Based on the results of these numerical analyses, the effects of the rigidity of the missile as well as the impact angle on the local damage to the target structures are clarified.

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