建築物における雪庇の成長過程について

概要

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In heavy snowy region, snow cornices on roofs are serious problem of the architectural planning and structural calculation of snow load. Drifting snow frequently occurs on roofs in dry snow regions. Consequently snow accumulation on roofs increases especially on the leeward side. The authors studied snow cornices as regards the growing process of a cornice on buildings, the development of a cornice concerning the snowdrift on roofs. We carried out field observation of snow cornices and measuring of the snow depth distribution on buildings with flat roof in Asahikawa, Hokkaido, Japan. The following results were obtained. (1) Snowdrifts nearby parapet on the leeward side have a great effect on growing process of a snow cornice. (2) When snowdrifts are over parapet height, snow cornices are formed. (3) Snow cornice elongating hangs down by self-weight, and then another snowdrift deposits it. (4) Snow cornice is grown by the heavy snowfall (10cm/day) with mean wind speed exceeded 3m/s.
日本雪工学会の論文
2006-01-01