拱形屋面风致积雪分析

张冰; 张延年; 蒋坤

doi:10.13204/j.gyjzG20122210

拱形屋面风致积雪分析

doi: 10.13204/j.gyjzG20122210

张冰¹,
张延年^1,2,
蒋坤²

1. 吉林建筑科技学院土木工程学院, 长春 130114;
2. 沈阳建筑大学土木工程学院, 沈阳 110168

详细信息

作者简介:
张冰,女,1971年出生,高级工程师。电子信箱:760981581@qq.com

计量
- 文章访问数: 61
- HTML全文浏览量: 15
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2020-12-22
- 网络出版日期: 2022-04-24

Analysis of Wind-induced Snow Cover on Arched Roof

1. School of Civil Engineering, Jilin University of Architecture and Technology, Changchun 130114, China;
2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

摘要

摘要: 为掌握拱形屋面积雪分布情况，降低其风雪灾害，通过对积雪现场进行调查，根据积雪实际分布与灾害情况，利用Fluent软件，建立拱形屋面的风致积雪分析模型，考虑空气相相对速度、空气相速度、空气相相对角速度、雪密度等影响因素，模拟拱形屋面风致积雪分布。通过分析，找出影响屋面积雪沉积的主要因素，建立风雪效用湍流模型，进而对拱形屋面积雪产生的压强统计数据开展详细分析，提出拱形屋面积雪不均匀分布系数取值的建议，以弥补我国现行规范对积雪均匀分布系数取值考虑较充分，对不均匀分布系数取值考虑不足的情况。
- 拱形屋面 /
- 屋面积雪分布系数 /
- Fluent /
- 风致积雪分析模型 /
- 不均匀分布系数
Abstract: In order to determine snow cover distribution exactly, reduce the snow and wind disasters, the field survey of snow cover distribution of building was carried out. By using the software Fluent, the numerical models of wind-induced snow cover on arched roof were set up considering air-phase relative velocity, air-phase velocity, air-phase relative angular velocity, snow density and other factors to simulate the distribution of wind-induced snow cover on arched roof. By analyzing the data, the main factors affecting the snow cover distribution on the roof were found out, the turbulence model of wind and snow effect was established, and the statistical data of the pressure generated by the snow cover on the arched roof was analyzed in detail, and suggestion of the value of the uneven distribution coefficient of the snow cover on the arched roof was proposed, in order to make up for the situation that the current norms in China have more adequate consideration for the value of the uniform distribution coefficient of snow cover, but inadequate consideration for the value of the uneven distribution coefficient.
- arched roof /
- snow cover distribution coefficient of roof /
- Fluent /
- wind-induced snow cover distribution model /
- uneven distribution coefficient

HTML全文

参考文献(15)

[1]	张延年,王元清,张勇. Gumbel分布的基本风压计算与分析[J]. 土木建筑与环境工程,2012, 34(2):27-31.
[2]	张延年,张勇,王元清.辽宁省基本雪压的计算与分析[J].华南理工大学学报,2010,38(9):108-112.
[3]	中华人民共和国住房和城乡建设部.建筑结构荷载规范:GB 50009-2012[S].北京:中国建筑工业出版社,2012.
[4]	肖艳,杨易.FAE方法在屋盖结构雪荷载研究中的应用[J].土木工程与管理学报,2018,35(4):146-151 ,157.
[5]	颜卫亨,杜书朝,刘时楚,等.落地四房屋表面风致雪漂移效应分析[J].应用力学学报,2018,35(6):1227-1233 ,1416-1417.
[6]	肖艳,杨易.拱形屋盖结构不平衡雪荷载的模拟研究[J].工程力学,2018,35(10):152-159.
[7]	张延年,王元清,石永久.大跨度轻钢结构风雪灾害原因与实例分析[J].沈阳建筑大学学报(自然科学版),2011, 27(2):272-280.
[8]	TOINAGAG Y,TSUBASA O,AKASHI M.CFD modeling of snowdrift around a building:An overview of models and evaluation of a new approach[J].Building and Environment,2011,46:899-910.
[9]	ZIAD B,HRVOJE J. Two-way coupled Euleriam-Eulerian simulations of drifting snow with viscius treatment of the snow phase[J].Journal of Wind Engineering and Industrial Aerodynamics,2017.DOI: 10.1016/j.jweia.2017.07.006.
[10]	康路阳,周晅毅,顾明.考虑积雪休止角的屋面积雪漂移数值模拟方法[J].同济大学学报(自然科学版),2016,44(1):11-15.
[11]	周晅毅,谭敏海,晏克勤,等.风致积雪重分布的拉格朗日方法与现场实测研究[J].工程力学,2017,34(2):21-27.
[12]	徐枫,周高照,肖仪清,等.建筑屋盖表面及其周围积雪分布研究[J].振动与冲击,2018,37(13):92-99.
[13]	LIU M M, ZHANG Q W, FAN F, et al. Expenriments on natural snow distribution around simplified building models based on air snow-wind combined experimental facility[J].Journal of Wind Engineering & Industrial Aerodyna,2018,173:1-13.DOI: 10.1016/j.jweia.2017.12.010.
[14]	ZHU F, YU Z X, ZHAO L, et al.Adaptive-mesh method using RBF interpolation:A time-marching analysis of steady snow drifting on stepped flatroofs[J].Joumal of Wind Engineering & Industrial Aerodyna,2017,171:1-11.DOI: 10.1016/j.jweia.2017.09.008.
[15]	SUN X Y,HE R J, WU Y. Numerical simulation of snowdrift on membrane roof and the mechanical performance under snow loads[J].Cold Regions Science and Technology,2018,150:15-24.