Full-scale impact load tests on shock-absorber to strengthen a snow-shed against rockfall

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  • 既設スノーシェッドの落石補強用緩衝体の実規模落錘衝突実験
  • キセツ スノーシェッド ノ ラクセキ ホキョウヨウ カンショウタイ ノ ジツ キボラクスイ ショウトツ ジッケン

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Abstract

<p>A snow-shed is primarily designed against not a rockfall but an avalanche, and yet it is sometimes exposed to a rockfall. In order to strengthen the roof slab of existing snow-sheds against the rockfall, using a shock absorber seems to be effective. However sand cushion which is usually used as a shock absorber for a rock-shed is too heavy for structural members of a snow-shed. Of course enlarging the slab thickness is not also valid due to increasing selfweight considerably. Shock absorbers composed of EPS-blocks, corrugated steel plates and stiffened rectangular steel-pipes were examined under weight-fall tests in this study. It is found that the employed absorber is lightweight and effective for strengthening existing snow-sheds against a rockfall.</p>

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