矩形截面高层建筑扭转向脉动风荷载数学模型

李永贵; 李秋胜; 戴益民

doi:10.6052/j.issn.1000-4750.2013.11.1105

矩形截面高层建筑扭转向脉动风荷载数学模型

李永贵¹,
李秋胜^{2, 3,},
戴益民¹

1.
湖南科技大学土木工程学院,湖南,湘潭 411201;
2.
湖南大学建筑安全与节能教育部重点实验室,湖南,长沙 410082;
3.
香港城市大学土木及建筑工程系,香港,九龙 999077

基金项目: 湖南省自然科学基金项目(14JJ6026); 国家自然科学基金项目(51178179); 国家自然科学基金重大研究计划项目(91215302); 广西防灾减灾与结构安全重点实验室开放课题项目(2013ZDK 06)

详细信息

作者简介:
李永贵(1981―),男,湖北武汉人,讲师,博士,从事结构风工程研究(E-mail: lyg313@126.com);戴益民(1972―),男,湖南新化人,副教授,博士,从事结构风工程研究(E-mail: dymzzy@163.com).

通讯作者:
李秋胜(1962―),男,湖南永州人,教授,博士,博导,中组部千人计划国家特骋专家,长江学者讲座教授,从事结构风工程研究(E-mail: bcqsli@cityu.edu.hk).

中图分类号: TU312
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- 文章访问数: 335
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出版历程
- 收稿日期: 2013-11-25
- 修回日期: 2014-06-25
- 刊出日期: 2015-06-24

MATHEMATICAL MODELS FOR TORSIONAL FLUCTUATING WIND LOADS ON RECTANGULAR TALL BUILDINGS

1.
School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China;
2.
Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha, Hunan 410082, China;
3.
Department of Civil and Architectural Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China

摘要

摘要: 在边界层风洞中完成了一系列矩形截面高层建筑刚性模型的同步测压试验,研究了根方差扭矩系数和基底扭矩功率谱的基本特性。结果表明,层根方差扭矩系数沿高度呈抛物线分布,基底根方差扭矩系数随厚宽比的增大而增大。厚宽比小于1时,基底扭矩功率谱有一个明显的窄带谱峰;厚宽比大于1时,出现两个谱峰,随着厚宽比的增大,两个谱峰逐渐靠近。以厚宽比为自变量,拟合得到了根方差扭矩系数和基底扭矩功率谱的计算公式。
- 高层建筑 /
- 扭转向脉动风荷载 /
- 风洞试验 /
- 数学模型 /
- 抗风设计
Abstract: Detailed wind tunnel tests for a series of rectangular tall buildings were carried out. The basic characteristics of torsional fluctuating wind loads including the RMS torque coefficients and power spectral densities (PSDs) of base torque were discussed. The results show that the local RMS torque coefficients clearly demonstrate parabolic variations with the building height. The base RMS torque coefficients increase with the increase of side ratios. One obvious narrow-band peak is observed in the PSDs of base torque when the side ratio is less than 1, while two obvious peaks are found in the PSDs of base torque when the side ratio is larger than 1. The reduced frequencies corresponding to the two peaks approach to each other with the increase of side ratios. Furthermore, the formulas of the RMS torque coefficients and PSDs of base torque were also obtained by selecting the side ratio as a fitting parameter.
- tall building /
- torsional fluctuating load /
- wind tunnel test /
- mathematical model /
- wind resistant design

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参考文献(18)

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文章访问数: 335
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矩形截面高层建筑扭转向脉动风荷载数学模型

作者简介: 李永贵(1981―),男,湖北武汉人,讲师,博士,从事结构风工程研究(E-mail: lyg313@126.com);戴益民(1972―),男,湖南新化人,副教授,博士,从事结构风工程研究(E-mail: dymzzy@163.com).

通讯作者: 李秋胜(1962―),男,湖南永州人,教授,博士,博导,中组部千人计划国家特骋专家,长江学者讲座教授,从事结构风工程研究(E-mail: bcqsli@cityu.edu.hk).

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MATHEMATICAL MODELS FOR TORSIONAL FLUCTUATING WIND LOADS ON RECTANGULAR TALL BUILDINGS

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目录

作者简介:
李永贵(1981―),男,湖北武汉人,讲师,博士,从事结构风工程研究(E-mail: lyg313@126.com);戴益民(1972―),男,湖南新化人,副教授,博士,从事结构风工程研究(E-mail: dymzzy@163.com).

通讯作者:
李秋胜(1962―),男,湖南永州人,教授,博士,博导,中组部千人计划国家特骋专家,长江学者讲座教授,从事结构风工程研究(E-mail: bcqsli@cityu.edu.hk).