建筑屋盖表面及其周围积雪分布研究

PDF(2927 KB)

振动与冲击 ›› 2018, Vol. 37 ›› Issue (13) : 92-99.

论文

建筑屋盖表面及其周围积雪分布研究

徐枫1，周高照1，肖仪清1，欧进萍1,2

作者信息 +

Snow distribution on surface of building roof and its surrounding

XU Feng1, ZHOU Gaozhao1, XIAO Yiqing1, OU Jinping1,2

Author information +

文章历史 +

摘要

准确预测建筑屋盖表面和建筑周围的积雪空间分布形式是防止雪灾发生的重要手段。本文基于 Euler-Euler 方法，假定空气相和雪相均为连续相，运用计算流体力学软件FLUENT17.0，采用 Mixture多相流模型和湍流模型模拟了立方体周围和高低屋盖表面的风致雪漂移。首先采用四组网格，以立方体为研究对象进行网格无关性验证；随后模拟了立方体周围风场并比较了迎风中线的平均风压系数，结果显示湍流模型与实测结果吻合较好；最后模拟了立方体周围和高低屋盖表面的积雪分布并与实测和风洞试验结果进行了对比，侵蚀、沉积趋势一致。

Abstract

Accurately predicting snow spatial distribution forms on roof surface of a building and its surrounding is an important means to prevent snow disasters. Based on Euler-Euler method, assuming that both air phase and snow one are a continuous phase, the mixture multi-phase flow model and the turbulence one were used to simulate wind snow drift around a building model by means of the computational fluid dynamics (CFD) software FLUENT 17.0. Firstly, taking a cube as the study object and using four groups of grid, the grid independence was verified. Then the wind field around the cube was simulated and the average wind pressure coefficients along the windward central line were compared, the results showed that the computational results of the k-kl-ω model agree well with those of the field measurement. Finally, the snow distributions around the cube and on the surfaces of a high roof and a low one were simulated, the results were compared with those of the field measurement and wind tunnel tests, it was shown that their erosion and deposition trends are consistent.

导出引用

徐枫1，周高照1，肖仪清1，欧进萍1,2. 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

XU Feng1, ZHOU Gaozhao1, XIAO Yiqing1, OU Jinping1,2. Snow distribution on surface of building roof and its surrounding[J]. Journal of Vibration and Shock, 2018, 37(13): 92-99

参考文献

[1] 张德海，南波，舒铮. 雪灾后某网架破坏分析及加固[J]. 沈阳建筑大学学报(自然科学版). 2010(01): 62-67.
ZHANG Dehai,NAN Bo,SHU Zheng.Theanalysis and reinforcement of rack damage after a snow disaster[J].Journal of Shenyang Architectural University (natural science edition).2010(01): 62-67.
[2] 郑治强，郑秀萍. 谈工业建筑设计中屋面雪荷载的堆积[J]. 工程建设与设计. 2008(08): 27-31.
ZHEN Zhiqiang,ZHEN Xiuping.The accumulation of roof snow load inindustrial building design[J].Engineering Construction and Design. 2008(08): 27-31.
[3] 张延年，王元清，石永久，等. 某网架结构厂房雪灾后安全性检测[J]. 沈阳建筑大学学报(自然科学版). 2009(05): 877-883.
ZHANG Yannian,WANG Yuanqing,SHI Yongjiu.A space truss structure safety testingafter the snow disaster[J].Journal of Shenyang Architectural University (natural science edition).2009(05): 877-883.
[4] 顾明，黄友钦，赵明伟. 风雪共同作用下门式刚架厂房的动力稳定[J]. 同济大学学报(自然科学版). 2011, 39(9): 1266-1272.
GU Ming,HUANG Youqing,ZHAO Mingwei.The dynamic stability of gantry frame factory under the combination of wind and snow.Journal of Tongji University(natural science edition).2011, 39(9): 1266-1272.
[5] Oikawa S, T. T. Formation processes of the deposition and erosion of snow around a model building[J]. Seppyo. 2003, 65(3): 207-218.
[6] Tsuchiya M, Tomabechi T, Hongo T, et al. Wind effects on snowdrift on stepped flat roofs[J]. Journal of Wind Engineering and Industrial Aerodynamics. 2002, 90(12–15): 1881-1892.
[7] Iversen J. Comparison of wind-tunnel model and full-scale snow fence drifts[J]. Journal of Wind Engineering and Industrial Aerodynamics. 1981, 8(3): 231-249.
[8] Sant'Anna F. Snow drifts on flat roofs: wind tunnel tests and field measurements[J]. Journal of Wind Engineering and Industrial Aerodynamics. 1990, 34(3): 223-250.
[9] Zhou X, Kang L, Gu M, et al. Numerical simulation and wind tunnel test for redistribution of snow on a flat roof[J]. Journal of Wind Engineering and Industrial Aerodynamics. 2016, 153: 92-105.
[10] 刘庆宽，赵善博，孟绍军，等. 雪荷载规范比较与风致雪漂移风洞试验方法研究[J]. 工程力学. 2015(01): 50-56.
LIU Qingkuan,ZHAO Shanbo,MENG Shaojun.The snow load code for the comparison and wind-induced snow drift wind tunnel test method research[J].Engineering Mechanics.2015(01): 50-56.
[11] Uematsu T, Nakata T, Takeuchi K, et al. Three-dimensional numerical simulation of snowdrift. Cold Regions Science and Technology[J]. Cold Regions Science and Technology. 1991, 20: 65-73.
[12] Bang B R, Nielsen A, Sundsb P A, et al. Computer simulation of wind speed, wind pressure and snow accumulation around buildings (SNOW-SIM)[J]. Energy and Buildings. 1994, 21(3): 235-243.
[13] Thiis T K, Gjessing Y. Large-scale measurements of snowdrifts around flat-roofed and single-pitch-roofed buildings[J]. Cold Regions Science and Technology. 1999, 30(1–3): 175-181.
[14] Beyers J H M, Sundsbø P A, Harms T M. Numerical simulation of three-dimensional, transient snow drifting around a cube[J]. Journal of Wind Engineering and Industrial Aerodynamics. 2004, 92(9): 725-747.
[15] 李雪峰，周晅毅，顾明，等. 立方体模型周边风致积雪飘移的数值模拟[J]. 同济大学学报(自然科学版). 2010(08): 1135-1140.
LI Xuefeng,ZHOU Xuanyi,GU Ming.Numerical simula-tion on snow drifting around a cube model.Journal of Tongji University(natural science edition).2010(08): 1135-1140.
[16] 孙晓颖，洪财滨，武岳，等. 建筑物周边风致雪漂移的数值模拟研究[J]. 工程力学. 2014(04): 141-146.
SUN Xiaoying, HONG Caibing, WU Yue.Numerical simulation of snow drifting around a building model.Engineering Mechanics.2014(04): 141-146.
[17] 李跃，袁行飞. 大跨度球壳屋盖风致积雪数值模拟及雪荷载不均匀分布系数研究[J]. 建筑结构学报. 2014(10): 130-136.
LI Yue,YUAN Xingfei.Numerical simulation of snow drifting and research on snow uneven distribution coefficient of long-span spherical shell roofs[J].Journal of Building Structures. 2014(10): 130-136.
[18] Walters D K, Cokljat D. A three-equation eddy-viscositymodel for reynolds-averaged navier-stokes simulations of transitional flow[J]. Journal of Fluids Engineering. 2008, 130(12):121401―121414.
[19] M. N, F. N, H. M. Numerical simulation of drifting snow: erosion and deposition models[J]. Annals of Glaciology. 1998, 26: 191-196.
[20] 李雪峰. 风致建筑屋盖表面及其周边积雪分布研究[D]. 上海: 同济大学, 2011.
LI Xuefeng.Wind-induced building roof surface and its surrounding snow distribution research[D].Shang-hai:Tongji Univerity, 2011.
[21] 王福军. 计算流体动力学分析[M]. 北京: 清华大学出版社, 2004: 147-148.
WANG Fujun.Computational fluid dynamics analysis[M].Bejing:Tsinghua university press, 2004: 147-148.
[22] Recommendations for loads on Buildings(English Version)[S]. Architectural Institute of Japan., 2004.
[23] Pomeroy J W, Gray D M. Saltation of snow[J]. Water Resources Research. 1990, 26(7): 1583-1594.
[24] Pomeroy J W, Male D H. Steady-state suspension of snow[J]. Journal of Hydrology. 1992, 136(1-4): 275-301.
[25] Tominaga Y, Okaze T, Mochida A. CFD modeling of snowdrift around a building: An overview of models
and evaluation of a new approach[J]. Building andEnvironment. 2011, 46(4): 899-910.
[26] 孙晓颖，洪财滨，武岳. 典型形式大跨度屋盖风雪漂移的数值模拟[J]. 振动与冲击. 2014(18): 36-42.
SUN Xiaoying, HONG Caibing, WU Yue.Typical forms of the numerical simulation of the large span roof snow drift[J].Journal of Vibration and Shock. 2014(18): 36-42.
[27] Richards P J, Hoxey R P, Short L J. Wind pressures on a 6 m cube[J]. Journal of Wind Engineering and Industrial Aerodynamics. 2001, 89(14–15): 1553-1564.
[28] 王卫华. 风致屋面积雪分布特性风洞实验与数值模拟研究[D]. 西南交通大学, 2014.
WANG Weihua.The distribution features of the wind-induced roof snow wind tunnel experiment and numerical simulation research[D].Southwest jiaotong university, 2014.