气候变化领域集成服务门户(CCPortal): Wind tunnel test of wind-induced snowdrift on stepped flat roofs during snowfall

CCPortal

DOI	10.1007/s11069-020-04188-1
	Wind tunnel test of wind-induced snowdrift on stepped flat roofs during snowfall
	Wang J.; Liu H.; Chen Z.; Ma K.
发表日期	2020
ISSN	0921030X
起始页码	731
结束页码	752
卷号	104 期号:1
英文摘要	Snow distribution on a building surface is uneven due to the complicated drift movements of snow grains affected by the wind. Therefore, an accurate estimation of the snow distribution on a building’s roof is essential in protecting its structure. The existing wind tunnel tests of snow distribution on roofs do not consider the influences of falling snow, resulting in deviations between the test results and the actual snow distribution. In this study, a wind tunnel test method considering the snow falling process was proposed to simulate the irregular snow distribution on stepped flat roofs during snowfall. Based on the test data, the variation rule of snow distribution on the stepped flat roof with different test methods and conditions is summarized. (1) The results of the conventional snow erosion test, which neglected the influences of falling snow, deviated from the existing measurement results. (2) The test results of the proposed method with varying wind speeds and grain sizes met the double-linear or triple-linear rule, which conformed to the measurement results. (3) The initial snow significantly influenced the snow distribution on the front of the lower roof on windward side but only slightly affected the snow distribution on the other locations. The research conclusions could provide significant contributions to the actual engineering design. © 2020, Springer Nature B.V.
关键词	Snow distribution Snowdrift Snowfall Stepped flat roofs Wind tunnel test
英文关键词	grain size; induced response; roof; snow cover; spatial distribution; wind tunnel; wind velocity
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205983
作者单位	State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China; Department of Civil Engineering, Tianjin University, Tianjin, China; The Spatial Research Center, Guizhou University, Guiyang, China; Key Laboratory of Coast Civil Structure and Safety, Ministry of Education (Tianjin University), Tianjin, China; Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin, China
推荐引用方式 GB/T 7714	Wang J.,Liu H.,Chen Z.,et al. Wind tunnel test of wind-induced snowdrift on stepped flat roofs during snowfall[J],2020,104(1).
APA	Wang J.,Liu H.,Chen Z.,&Ma K..(2020).Wind tunnel test of wind-induced snowdrift on stepped flat roofs during snowfall.Natural Hazards,104(1).
MLA	Wang J.,et al."Wind tunnel test of wind-induced snowdrift on stepped flat roofs during snowfall".Natural Hazards 104.1(2020).