[1]周显鹏,彭兴黔,张松.带悬挑女儿墙双坡屋面风压的数值模拟分析[J].华侨大学学报(自然科学版),2008,29(2):289-293.[doi:10.11830/ISSN.1000-5013.2008.02.0289]
　ZHOU Xian-peng,PENG Xing-qian,ZHANG Song.Numerical Simulation of Wind Pressures on the Gable Roof with Cantilevered Parapets[J].Journal of Huaqiao University(Natural Science),2008,29(2):289-293.[doi:10.11830/ISSN.1000-5013.2008.02.0289]
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带悬挑女儿墙双坡屋面风压的数值模拟分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第29卷
期数:
2008年第2期
页码:
289-293
栏目:
出版日期:
2008-04-20

文章信息/Info

Title:
Numerical Simulation of Wind Pressures on the Gable Roof with Cantilevered Parapets
文章编号:
1000-5013(2008)02-0289-05
作者:
周显鹏; 彭兴黔; 张松
华侨大学土木工程学院; 华侨大学土木工程学院 福建泉州362021; 福建泉州362021
Author(s):
ZHOU Xian-peng;  PENG Xing-qian;  ZHANG Song
College of Civil Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
悬挑女儿墙;  屋面风压;  数值模拟;  风洞实验
Keywords:
cantilevered parapet;  wind pressure on roof;  numerical simulation;  wind tunnel test
分类号:
TU312.1
DOI:
10.11830/ISSN.1000-5013.2008.02.0289
文献标志码:
A
摘要:
考虑加设悬挑女儿墙对双坡屋面风压的影响,将悬挑女儿墙设置高度与房屋檐高的比值作为控制参数,利用计算流体力学软件CFX 10.0,以及SSTk-ω模型和混合网格对一典型低矮双坡门刚厂房屋面平均风压进行数值模拟.分析悬挑女儿墙对屋面风压的影响,优化设计参数.采用计算流体动力学数值模拟方法,探讨常见的双坡屋面轻钢厂房模型在增设悬挑女儿墙后,其屋面风压的变化及影响,并与未增设悬挑女儿墙时的风洞实验结果对比.结果表明,增设悬挑女儿墙后能明显地降低屋面风荷载敏感区的负压峰值及风荷载体型系数.
Abstract:
Considering the influence of wind pressure on the gable roof with cantilevered parapets,and taking the ratio of the height of cantilevered parapet to the height of eave as the control parameter,the average wind pressure on the gable roof of a typical low-rise portal steel frame is simulated numerically by the computational fluid dynamics software CFX 10.0,SST k-ω model and mixed grid,the influence of the cantilevered parapets on the wind pressure is analyzed,the design parameters are also optimized.When adding the cantilevered parapets,the changes and effects of the wind pressure on gable roof of the common light-weight steel building,are discussed by numerical simulation,the calculation results are compared to the experimental wind tunnel results without parapets.The comparison shows that the cantilevered parapets can obviously reduce the peak values of negative pressure on the zones susceptible to wind pressure,and the shape factor of wind load.

参考文献/References:

[1] 魏庆鼎. 透风性女儿墙对尖屋顶风荷载的影响 [J]. 气动实验与测量控制, 1992(1):19-24.
[2] 傅继阳, 甘泉. 开槽对大跨悬挑平屋盖结构风荷载的影响 [J]. 实验力学, 2003(4):458-465.doi:10.3969/j.issn.1001-4888.2003.04.005.
[3] 张松. 女儿墙对低矮房屋屋面风压影响的数值模拟 [D]. 泉州:华侨大学, 2005.
[4] 中国建筑金属结构协会建筑钢结构委员会. CECS 102-2002.门式刚架轻型钢结构房屋钢结构技术规程 [S]. 北京:中国计划出版社; 北京:中国工程建设标准化协会, 2003.
[5] OLIVEIRA P J, YOUNIS B A. On the prediction of turbulent flows around full-scale buildings [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2000, (2/3):203-220.doi:10.1016/S0167-6105(00)00011-8.
[6] HOXEY P, RICHARDS R P, SHORT L J. Wind pressures on a 6cm cube [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2001.1553-1564.
[7] 周大伟. 高屋建筑风压风流场稳态与大涡模拟研究 [D]. 上海:同济大学, 2005.

备注/Memo

备注/Memo:
福建省科技重大专项前期项目(2005YZ1016); 福建省自然科学基金计划资助项目(E0510022); 泉州市科技计划重点项目(2007G7); 厦门市发改委科技项目(2008-70)
更新日期/Last Update: 2014-03-23