Universal Equivalent Static Wind Load Estimation for Spatial Structures Based on Wind-Induced Envelope Responses
Universal Equivalent Static Wind Load Estimation for Spatial Structures Based on Wind-Induced Envelope Responses
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DOI：
10.1260/0266-3511.26.2.105
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发表时间：
2009-12
影响因子：
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通讯作者：
Yuanqi Li;Lei Wang;Y. Tamura;Zuyan Shen
中科院分区：
文献类型：
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作者：
Yuanqi Li;Lei Wang;Y. Tamura;Zuyan Shen
大跨度空间结构的抗风设计在实践中是复杂且困难的。回顾了现有的抗风设计方法，并讨论了每种方法的适应范围。虽然通用等效静风荷载（ESWL）方法可以产生通用风荷载分布，同时再现悬臂结构所有结构构件的最大荷载效应，但发现通用ESWL方法不适用于一般空间结构，例如壳结构。本文从结构设计师的角度针对这一问题提出了一种基于风致包络响应（WER）来估计通用 ESWL 的实用方法。然后，通过圆柱单层壳的数值例子说明了该方法的效率。最后，从风荷载必要信息、效率、实践便利性等多个方面比较了现有方法以及本文提出的方法的优缺点。
Wind-resistant design for large-span spatial structures is complex and difficult in practice. Existing wind-resistant design methods were reviewed and the adaptation range of each method was discussed. Though the universal Equivalent Static Wind Loading (ESWL) method could produce a universal wind load distribution that simultaneously reproduces largest load effects for all structural members of cantilevered structures, it is found that the universal ESWL method is not applicable for general space structures, such as shell structures. In this paper, a practical approach to estimate the universal ESWL based on Wind-induced Envelope Responses (WER) is presented for this problem from the structural designer's point of view. Then, the efficiency of the presented approach is illuminated with a numerical example of cylinder single layered shell. Finally, the advantages and the disadvantages of existing approaches, as well as the presented one, are compared at many aspects, such as necessary information of wind load, efficiency, convenience in practice, and so on.