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 (1 同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室， 上海 200092； 2 黑龍江大學(xué)建筑工程學(xué)院， 哈爾濱 150086)

［摘要］雪荷載是低矮屋蓋的重要設(shè)計荷載，風(fēng)雪的聯(lián)合作用對結(jié)構(gòu)的破壞較為嚴(yán)重。對地面及典型屋蓋表面的雪密度進(jìn)行實(shí)測研究，具體考察了溫度、雪厚度、沉積時間等因素對雪密度的影響規(guī)律，并對各影響因素進(jìn)行了詳細(xì)分析。此外，對平屋蓋、拱形屋蓋上雪荷載的沉積和分布特征進(jìn)行實(shí)測，并與中國、美國、歐洲等國家荷載規(guī)范中相關(guān)條款對比分析，為雪荷載實(shí)用計算方法的確定提供依據(jù)。

［關(guān)鍵詞］雪密度; 實(shí)測; 低矮屋蓋; 分布特征; 荷載規(guī)范

中圖分類號：TU312      文獻(xiàn)標(biāo)識碼：A      文章編號：1002-848X(2014)17-0095-06

Field measurement study of the snow load

Zhou Xuanyi 1, Li Fanghui2, Gu Ming 1, Meng Fan2

 (1 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 2 Heilongjiang University, School of Architectural Engineering, Harbin 150086, China)

Abstract: The snow load is an important design load for the low-rise roof, and the structures are seriously destroyed under the coupled action of wind and snow loads. The field measurement studies were carried out on the snow densities on the ground and typical roof. The effect laws of temperature, snow depth and depositing time on the snow density were observed and analyzed in detail. In addition, depositions and distribution characteristics of snow loads on the flat and arched roofs were measured and compared with relevant provisions of the load codes in China, USA and European countries, which provided basis for the determination of the practical calculating method of the snow load.

Keywords: snow density; field measurement; low-rise roof; distribution characteristics; load code

*國家自然科學(xué)基金項(xiàng)目(50608060)。

作者簡介：周晅毅，博士生導(dǎo)師，Email:zhouxytj@mail.#edu.cn。

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