全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2014 

建筑屋面滑移雪荷载的模拟方法研究

DOI: doi:10.6052/j.issn.1000-4750.2012.12.1023, PP. 190-196

Keywords: 积雪滑落,能量及质量平衡模型,建筑屋面融雪模型,积雪最大持水量,滑移雪荷载

Full-Text   Cite this paper   Add to My Lib

Abstract:

滑移雪荷载是屋面雪荷载的重要组成部分,该文发展了计算屋面滑移雪荷载的模拟方法.首先,基于前人提出的能量及质量平衡模型,并针对建筑屋面积雪的特点,构造了建筑屋面融雪模型.在此基础上,提出将屋面积雪中液态水超过积雪最大持水量时作为屋面雪层开始滑移的判定条件.利用该文方法对我国几个代表性地区的屋面滑移雪荷载进行了模拟,分析了不同地区的气象特征、邻近建筑对屋面积雪的遮挡等因素对滑移雪荷载的影响;同时定量分析了各个能量对滑移雪的贡献大小.

References

[1]  JG J26-2010, 严寒和寒冷地区居住建筑节能设计标准[S]. 北京: 中国建筑工业出版社, 2010. JG J26-2010, Design standard for energy efficiency of residential buildings in severe cold and cold zones[S]. Beijing: China Building Industry Press, 2010. (in Chinese)
[2]  Loth B, Graf H F, Oberhuber J M. Snow-cover model for global climate simulations[J]. Journal of Geophysical Research, 1993, 98(6): 10451―10464.
[3]  Fernandez Alberto. An energy balance model of seasonal snow evolution[J]. Physics and Chemistry of the Earth, 1998, 23(5/6): 661―666.
[4]  Neale C M U, Tarboton D G, McDonnell J J. A spatially distributed water balance based on physical, isotropic and airborne remotely sensed data[R]. Logan, U.S. Geological Survey. Utah State University, Utah Water Res. Lab.,1992.
[5]  秦艳. WRF与干旱区分布式融雪径流模型的耦合及应用研究[D]. 新疆: 新疆大学, 2010. Qin Yan. Research in coupling WRF model with the arid snowmelt runoff model[D]. Xinjiang: University of Xinjiang, 2010. (in Chinese)
[6]  Butke J T. An evaluation of a point snow model and a mesoscale model for regional climate simulations[D]. Newark: University of Delaware, 1996.
[7]  Sack R L, Arnholtz D, Haldeman J S. Sloped roof snow loads using simulation[J]. Journal of Structural Engineering, ASCE, 1987, 113(8): 1820―1834.
[8]  Lepage M F, Schuyler G D. A simulation to predict snow sliding and lift-off on buildings[C]. Santa Barbara, California, Proceedings of the Engineering Foundation Conference on a Multidisciplinary Approach to Snow Engineering, 1988.
[9]  Isyumov N, Mikitiuk M. Sliding snow and ice from sloped building surfaces: Its prediction, potential hazards and mitigation[C]. Whistler B C, Canada, Proceedings of the 6th Snow Engineering Conference, 2008.
[10]  Tarboton D G. Utah energy balance snow accumulation and melt model (UEB)[D]. Computer Model Technical Description and Users Guide, Utah Water Research Laboratory and USDA Forest Service Intermountain Research Station, 1996.
[11]  Gustafsson D, Stähli M, Jansson P E. The surface energy balance of a snow cover: Comparing measurements to two different simulation models[J]. Theoretical and Applied Climatology, 2001, 70: 81―96.
[12]  Hock R. Temperature index melt modeling in mountain areas[J]. Journal of Hydrology, 2003, 282: 104―115.
[13]  Ohara N, Kavvas M L. Field observations and numerical model experiments for the snowmelt process at a field site[J]. Advances in Water Resources, 2006, 29: 194―211.
[14]  Letsinger S L, Olyphant G A. Distributed energy-balance modeling of snow-cover evolution and melt in rugged terrain: Tobacco Root Mountains, Montana, USA[J]. Journal of Hydrology, 2007, 336(1/2): 48―60.
[15]  Zeinivand H, Smedt F D. Prediction of snowmelt floods with a distributed hydrological model using a physical snow mass and energy balance approach[J]. Natural Hazards, 2010, 54: 451―468.
[16]  Swift L W. Algorithm for solar radiation on mountain slopes[J]. Water Resources Research, 1976, 12: 108―112.
[17]  Elnahas M M, Williamson T J. An improvement of the CTTC model for predicting urban air temperatures[J]. Energy and Buildings, 1997, 25: 41―49.
[18]  Oke T R. Boundary layer climate[M]. London: Methuen & Co. Ltd., 1978.
[19]  Kustas W P, Rango A, Uijlenhoet R. A simple energy budget algorithm for the snowmelt runoff model[J]. Water Resources Research, 1994, 30(5): 1515―1527.
[20]  GB 50009-2001, 建筑结构荷载规范[S]. 北京: 中国建筑工业出版社, 2006. GB 50009-2001, Load code for the design of building structures[S]. Beijing: China Building Industry Press, 2006. (in Chinese)
[21]  JG J26-95, 民用建筑节能设计标准[S]. 北京: 中国建筑工业出版社, 1996. JG J26-95, Energy conservation design standard[S]. Beijing: China Building Industry Press, 1996. (in Chinese)
[22]  JG J134-2001, 夏热冬冷地区居住建筑节能设计标准[S]. 北京: 中国建筑工业出版社, 2001. JG J134-2001, Design standard for energy efficiency of residential buildings in hot summer and cold winter zone[S]. Beijing: China Building Industry Press, 2001. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133