Improvement of Multi-layer Heat Balance Model of Snow on Roofs for the Predicting and Evaluating Roof Snow

• Project/Area Number: 25871085
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Architectural environment/Equipment; Building structures/Materials
• Research Institution: Hokkaido Research Organization
• Principal Investigator: Abe Yuhei 地方独立行政法人北海道立総合研究機構, 建築研究本部北方建築総合研究所, 研究員 (70614147)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 屋根雪 / 数値モデル / 水分移動モデル

Outline of Final Research Achievements

In this study, we conducted snowmelt experiments, and we clarified occurrence and transport of snowmelt water in the snow. Moreover, we conducted a survey of roof snow on an actual building with a pitched roof, and we obtained basic data necessary for developing a numerical model. Considering water transport in the snow, we developed a numerical model that can predict roof snow on a pitched roof, and we clarified the validity of it.

Research Products

• [Presentation] 雪質の違いを考慮した屋根雪の融雪係数 (2015)
  • Author(s): 阿部佑平，高倉政寛
  • Organizer: 雪氷研究大会（2015・松本）
  • Place of Presentation: 信州大学（長野県松本市）
  • Year and Date: 2015-09-16
• [Presentation] 建物の熱的影響と気象条件による雪質の変化を考慮した屋根積雪多層熱収支モデルの開発 その6 勾配屋根を有する実建物の屋根雪観測 (2014)
  • Author(s): 阿部佑平，堤拓哉
  • Organizer: 雪氷研究大会（2014・八戸）
  • Place of Presentation: 八戸工業大学（青森県八戸市）
  • Year and Date: 2014-09-21