In order to confirm the impact resistant performance of large-scale RC slabs with two opposite edges simply supported, the single and consecutive falling-weight impact tests were conducted by varying absorbing materials. Here two kinds of absorbing material were applied; sand cushion; and crushed gravel cushion. The slab without absorbing system was also tested as control slab. The consecutive impact loading tests were conducted from elastic region up to the ultimate state of the slabs. From this study, following results were obtained: 1) the failure mode can be shifted from punching shear failure type to flexural failure type by applying sand cushion and/or crushed gravel cushion; 2) the absorbing performance of sand cushion is superior to that of crushed gravel cushion; and 3) sand cushion can more widely disperse the impact force than crushed gravel cushion.
2辺支持大型RCスラブに関する重錘落下衝撃実験
JSE57A_1181_2011.pdf
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