EXPERIMENTAL STUDY ON THE SNOW REMOVAL FROM MEMBRANE STRUCTURE : Part 1 An analysis on effects of snow slip and snow melting by. hot air

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  • 積雪寒冷地における集成材膜ドームの膜上積雪処理法に関する実験的研究 : その1 実験用膜ドームの概要および自然落雪と温風融雪の効果に関する解析
  • 積雪寒冷地における集成材膜ドームの膜上積雪処理法に関する実験的研究-1-実験用膜ドームの概要および自然落雪と温風融雪の効果に関する解析
  • セキセツ カンレイチ ニ オケル シュウセイザイ マク ドーム ノ マク ジョ

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Abstract

The test membrane structure was constructed with the glued laminated wood for structure use, in liyama city, that is extraordinary sonwy area in Japan. Snow removal experiments were practiced in natural conditions, in winter season of 1991-1992, and the characteristics of wood were investigated. We obtained the following results. ( 1 ) Two patterns of snow slip manners were certified. The first pattern was named as the whole slip-type. Snow at the bottom of roof was broken loose, and after few minutes, the whole snow on the roof was slipped down in a moment. The other pattern was named as the part slip-type. Many cracks were occured on the drifted snow, and the snow pieces were slipped down in step by step. ( 2 ) The method used in snow melting was useful to reduce the snow on the membrane. The efficiency was obtained by the heat quantities absorbed into the snow. ( 3 ) The glued laminated wood was suited for the structure material in snowy and cold area.

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