Experimental study on impact resistant behavior of Rahmen-slab type RC structures and its numerical simulations

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  • 小型RCラーメンスラブ模型の耐衝撃挙動に関する重錘落下衝撃実験と数値解析的検討

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Abstract

In this paper, in order to establish performance-based impact resistant design procedure for rockfall protection galleries, falling-weight impact test of small size Rahmen-slab type RC structures is conducted and these impact resistant behaviors are investigated. Also, to establish the prediction method for accumulated damage and residual load-carrying capacity of the RC structures under consecutive impact loading, 3D FE analysis method is proposed and its applicability is discussed by comparing with the experimental results. From this study, following results are obtained: (1) the Rahmen-slab type RC structures reach the ultimate state in punching shear failure mode under impact loading; and (2) the accumulated damage of the structures can be rationally evaluated by using distributions of impact force, displacement crack patterns obtained from the numerical analysis with the proposed method.

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