緩衝材として砕石を設置した実規模RC製ロックシェッドの重錘落下衝撃実験に基づいた弾性衝撃挙動

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  • Elastic impact behavior of a full-scale RC rock-shed with gravel cushion under falling-weight impact loading
  • カンショウザイ ト シテ サイセキ オ セッチ シタ ミノル キボ RCセイ ロックシェッド ノ ジュウ スイ ラッカ ショウゲキ ジッケン ニ モトズイタ ダンセイ ショウゲキ キョドウ

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In order to accumulate basic knowledge for establishing the rational performance-based impact resistant design procedures of RC rock-sheds, the consecutive falling-weight impact test of full scale RC rock-shed with 90 cm thick gravel cushion was conducted. In this test, impact response behavior of the rock-shed from the elastic region was investigated by falling-weight impact test. From this study, following results were obtained: 1) Lame's constant of gravel cushion used as cushion material may be about 4,000 ∼ 10,000 kN/m2, it may be influenced by the compacting intensity and the flexural stiffness of the roof slab at the loading point; 2) in the case of loading at the central position, sectional forces may be also subjected to the roof slab, side wall and column for both sides; and 3) in the case of edge loading, sectional forces tend to be larger than the case of central loading.

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