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（1 黑龍江大學(xué)建筑工程學(xué)院， 哈爾濱 150086; 2 廣西科技大學(xué)鹿山學(xué)院土木工程系， 柳州 545616）

［摘要］基于Snow Fork雪特性分析儀對(duì)屋蓋表面及地面積雪密度進(jìn)行精細(xì)化實(shí)測(cè)研究，詳細(xì)考察雪厚度、溫度、沉積時(shí)間等因素對(duì)積雪密度的影響規(guī)律。此外，對(duì)雙坡屋蓋不均勻分布特性進(jìn)行實(shí)測(cè)研究，并與《建筑結(jié)構(gòu)荷載規(guī)范》（GB 50009—2012）進(jìn)行對(duì)比。通過(guò)地面和屋面雪荷載特性實(shí)測(cè)研究表明，建筑屋面積雪密度大于地面積雪密度；不同厚度位置積雪密度大小不同，中間積雪層的積雪密度較大，上層和下層積雪密度較小。一天不同時(shí)間內(nèi)中午的積雪密度較大。通過(guò)雙坡屋蓋模型實(shí)測(cè)研究發(fā)現(xiàn)，對(duì)于相鄰兩個(gè)屋蓋，屋蓋迎風(fēng)面雪荷載分布系數(shù)較背風(fēng)面分布系數(shù)小。利用所進(jìn)行積雪密度和雙坡屋蓋雪分布特性研究有助于明確屋蓋表面雪荷載大小，為工程設(shè)計(jì)提供建議。

［關(guān)鍵詞］雪荷載； 積雪密度； 實(shí)測(cè)研究； 雙坡屋蓋

中圖分類(lèi)號(hào)：TU119+.21， TU312+.1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

*國(guó)家重點(diǎn)研發(fā)計(jì)劃“智能型臨時(shí)支撐安全技術(shù)與裝置研究及示范項(xiàng)目（2016YFC0802004)。

作者簡(jiǎn)介：陳文潔，碩士研究生，Email：2572826904@qq.com。