期刊文献+

实际瓦屋面双坡低矮建筑的风荷载特性的数值模拟研究

Numerical Investigation of the Characteristics of Wind Load Acting on the Actual Tile-Roof of Low-Rise Gable-Roofed Buildings
下载PDF
导出
摘要 基于Fluent软件平台,采用雷诺应力模型(RSM),对一类实际瓦屋面双坡低矮建筑的风荷载特性进行了研究.首先通过对TTU标准模型的计算,验证了本文数值模拟方法的可行性并确定了合适的网格及计算参数.然后以实际瓦屋面双坡低矮建筑作为典型计算模型,对三种不同屋盖的体型系数进行了数值模拟,将实际瓦屋面模型与风洞试验模型进行了对比分析,并分析了不同风向下瓦片屋盖对于屋面风压的影响.结果表明,实际瓦屋面模型的风压值整体上比风洞试验简化模型的风压值要小,两模型的风压差值从0°风向到90°风向呈递减趋势,且迎风面各分块的风压差普遍大于背风面各分块的风压差.结果还表明,在各风向角下,瓦片屋盖对屋面风压的影响程度不一,且折线瓦对风压的影响相比波形瓦要大. Based on Fluent soitware and Reynolds stress model(RSM), the characteristics of wind load acting on the actual tile-roof of low-rise gable-roofed buildings were investigated with numerical simulation technique. First, the feasibility of numerical simulation technique was verified by means of TTU prototype building; and the suitable mesh and parameters were coni'mned at the same time. Then the actual low-rise gabled-roofed building was used as a computational model, the shape coefficients of this building with three different roofs were calculated, the differences between the actual tile-roof model and the wind tunnel model were compared and analyzed, and the effects of tile-roof on shape coefficient under different wind directions were analyzed. The results show that, the wind pressure of the actual tile-roof model is smaller than the wind pressure of the simplified model of wind tunnel test as a whole, the wind pressure difference between the two models shows a decreasing trend in wind directions from 0° to 90°,and the difference is generally greater on the windward side than on the leeward side. The results also show that the impact of tile-roof on wind pressure is different under various wind directions, and the influence of fold-tile is larger compared with the pan-tile.
出处 《力学季刊》 CSCD 北大核心 2014年第2期270-282,共13页 Chinese Quarterly of Mechanics
关键词 双坡低矮建筑 体型系数 数值模拟 实际瓦屋面 low-rise gable-roofed building shape coefficient numerical simulation actual tile-roof
  • 相关文献

参考文献12

二级参考文献53

  • 1葛学礼,朱立新,于文,曾少华,贾抒,李琳,王文军.浙江苍南县“桑美”台风建筑灾害与抗风技术措施[J].工程质量,2006,24(10):18-22. 被引量:18
  • 2陈水福,吕少琳.低层双坡房屋屋面风荷载的数值研究——坡角和高宽比影响的分析[J].浙江大学学报(工学版),2006,40(10):1738-1742. 被引量:23
  • 3GB50009--2001,建筑结构荷载规范[S].
  • 4Holmes J D. Wind loads on low rise buildings: A review [ M ]. Highett, Victoria, Australia: CSIRO, Division of Building Research, 1983.
  • 5Holmes J D. Wind pressures on tropical housing [ J]. Journal of Wind Engineering and Industrial Aerodynamics, 1994, 53: 105-123.
  • 6Meecham D, Surry D, Davenport A G. The magnitude and distribution of wind induced pressures on hip and gable roofs [ J ]. Journal of Wind Engineering and Industrial Aerodynamics, 1991, 38: 257-272.
  • 7Xu Y L, Reardon G F. Variation of wind pressures on hip roof with roof pitch [ J ]. Journal of Wind Engineering and Industrial Aerodynamics, 1998, 73 : 267-284.
  • 8Ahmada S, Kumar K. Effect of geometry on wind pressures on low-rise hip roof buildings [ J]. Journal of Wind Engineering and Industrial Aerodynamics, 2002, 90 : 755-779.
  • 9Gingera J D, Holmes J D. Effect of building length on wind loads onlow-rise buildings with a steep roof pitch [ J ]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91: 1377-1400.
  • 10顾明,赵雅丽.我国沿海地区典型低层建筑模型风洞试验研究[R].上海:同济大学土木工程防灾国家重点实验室,2007.

共引文献124

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部