Research on design wind loads on cladding and components of flat roof

被引：0
|
作者：
Li B. [1 ,2 ]
Tian Y. [1 ,2 ]
Yang Q. [1 ,2 ]
Fan Z. [3 ]
机构：
[1] School of Civil Engineering, Beijing Jiaotong University, Beijing
[2] Beijing's Key Laboratory of Structural Wind Engineering and Urban Wind Environment, Beijing Jiaotong University, Beijing
[3] China Architectural Design Institute Co., Ltd, Beijing
来源：
| 2016年 / Science Press卷 / 37期
关键词：
Cladding and components; Complex-shaped and important building; Design wind load; Flat roof; Non-Gaussian peak factor; Peak wind pressure coefficient; Wind tunnel test;
D O I：
10.14006/j.jzjgxb.2016.01.008
中图分类号：
学科分类号：
摘要：
The shape factors of wind loads for the complex-shaped and important buildings are not specified in GB 50009-2012 'Load code for the design of building structures'. The wind loads of these buildings are frequently determined by wind tunnel tests. A method of determining the design wind loads for cladding and components based on the wind tunnel tests was presented in this paper. In this method, the peak pressure coefficient of wind load is expressed as the summation of shape factor and the peak fluctuating pressure coefficient, instead of the product of the gust factor and the shape factor in GB 50009-2012. The method can not only be applied to the windward cladding and components, but also to the leeward cladding and components which are located in the flow separation zones. After the non-Gaussian characteristics of wind pressure histories are considered, the peak fluctuating pressure coefficient can be simply calculated using the reduced formulae of non-Gaussian peak factor. As an example, the design wind loads on cladding and components of a large-span flat roof were investigated using both the presented method and the method in GB 50009-2012. The recommended peak pressure coefficients on cladding and components of flat roof were presented for the wind-resistant design. It is clear that the problem of design wind loads on cladding and components is solved effectively by the presented method and that the load panels specified in AIJ-RLB-2004 code are reasonable. It is illustrated that the design wind loads on cladding and components located in the flow separation zones may be underestimated by the national code if the shape factors are obtained by wind tunnel test. © 2016, Science Press. All right reserved.
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页码：65 / 76
页数：11
相关论文
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