（1 黑龙江大学建筑工程学院， 哈尔滨 150086; 2 广西科技大学鹿山学院土木工程系， 柳州 545616）

［摘要］基于Snow Fork雪特性分析仪对屋盖表面及地面积雪密度进行精细化实测研究，详细考察雪厚度、温度、沉积时间等因素对积雪密度的影响规律。此外，对双坡屋盖不均匀分布特性进行实测研究，并与《建筑结构荷载规范》（GB 50009—2012）进行对比。通过地面和屋面雪荷载特性实测研究表明，建筑屋面积雪密度大于地面积雪密度；不同厚度位置积雪密度大小不同，中间积雪层的积雪密度较大，上层和下层积雪密度较小。一天不同时间内中午的积雪密度较大。通过双坡屋盖模型实测研究发现，对于相邻两个屋盖，屋盖迎风面雪荷载分布系数较背风面分布系数小。利用所进行积雪密度和双坡屋盖雪分布特性研究有助于明确屋盖表面雪荷载大小，为工程设计提供建议。

［关键词］雪荷载； 积雪密度； 实测研究； 双坡屋盖

中图分类号：TU119+.21， TU312+.1文献标识码：A文章编号：1002-848X(2018)01-0032-04

Study on snow distribution characteristics and snow density of double-slope roofs

Chen Wenjie1, Li Pei2, Li Fanghui1

(1 Architectural Engineering Institute, Heilongjiang University, Harbin 150086, China; 2 Department of Civil Engineering, Deer Mountain College of Guangxi University of Science and Technology, Liuzhou 545616, China)

Abstract:Based on Snow Fork snow characteristic analyzer, the density of snow on roof surface and ground was measured and studied at the field in detail. The effects of snow thickness, temperature and deposition time on snow density were investigated in detail. In addition, the uneven distribution characteristics of double-slope roof was measured, studied at the field and compared with that in Load code for the design of building structures (GB 50009—2012). The study on the snow load characteristics on ground and roof shows that the density of snow on building roof is larger than that of ground; the snow density is different at different thickness locations, and the snow density of the middle snow layer is larger and the snow density of the upper and lower layers is smaller. The snow density at noon is great during different time of the day. According to the field measurement study of the double-slope roof model, the distribution coefficient of the snow load on the windward side of the roof is smaller than the distribution coefficient of the leeward surface for two adjacent roofs. The study of the snow density and the snow distribution characteristics of the double-slope roof helps to clarify the snow load on the roof surface and provides suggestions for engineering design.

Keywords:snow load; snow density; field measurement study; double-slope roof

*国家重点研发计划“智能型临时支撑安全技术与装置研究及示范项目（2016YFC0802004)。

作者简介：陈文洁，硕士研究生，Email：2572826904@qq.com。