| 某城市中心开敞式膜结构屋盖的风荷载试验研究 |
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| 引用本文： | 李寿英,陈政清,段树金.某城市中心开敞式膜结构屋盖的风荷载试验研究[J].石家庄铁道学院学报,2006,19(4):6-11. |
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| 作者姓名： | 李寿英 陈政清 段树金 |
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| 作者单位： | 湖南大学风工程试验研究中心 湖南长沙410082(李寿英，陈政清)，石家庄铁道学院土木工程分院 河北石家庄050043(段树金) |
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| 摘 要： | 以郑州大上海步行街中心广场膜结构屋盖为工程背景,进行了刚性模型的同步测压试验。详细研究了该屋盖的平均风荷载和脉动风荷载的分布特征、上下表面对应点风压的相关性、以及围护结构设计和承重结构设计的风荷载。结果表明:该屋盖表面的风压以负压为主,脉动成份很大;上下表面对应点风压的相关系数绝大部分为正值;采用规范方法的结果进行围护结构设计偏于不安全,应采用概率统计方法的结果。
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| 关 键 词： | 城市中心 开敞式 膜结构屋盖 风荷载 相关性 |
| 文章编号： | 1006-3226（2006）04-0006-06 |
| 收稿时间： | 2006-06-23 |
| 修稿时间： | 2006-06-23 |
Experimental Investigation of Wind Loading of Open Roofs Located in City Center |
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| Li Shouying,Chen Zhengqing,Duan Shujin.Experimental Investigation of Wind Loading of Open Roofs Located in City Center[J].Journal of Shijiazhuang Railway Institute,2006,19(4):6-11. |
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| Authors: | Li Shouying Chen Zhengqing Duan Shujin |
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| Institution: | 1. Research Center in Wind Engineering, Hunan University, Changsha 410082, China ; 2. School of Civil Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043, China |
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| Abstract: | Taking an open membrane roof,which covers the central square of Great Shanghai Pedestrian Street in Zhengzhou City,as an example,a wind tunnel test on a rigid model was carried out.The characteristics of wind loading(mean and rms) on the roof are particularly investigated.Correlation coefficients between wind pressures on the corresponding upside and downside are analyzed.Finally,wind loadings for claddings design are obtained.The results show that negative pressures are predominant on open roof;Correlation coefficients between wind pressures on the corresponding upside and downside are mostly positive;wind pressures for claddings design obtained from present code are smaller than the actual values. |
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| Keywords: | city center open style membrane roof wind loading correlation |
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