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Wind loading is a key consideration in the structural design of large span structures. Sometimes it is more important than earthquake loading, especially for large flexible structures. In this paper, considering both time and spatial correlation, useful artificial wind speed processes were generated by the autoregressive type simulation method, and the super relaxation iteration method was used to solve the matrix of regressive coefficients. The proposed method was applied in the numerical simulation of wind...

Wind loading is a key consideration in the structural design of large span structures. Sometimes it is more important than earthquake loading, especially for large flexible structures. In this paper, considering both time and spatial correlation, useful artificial wind speed processes were generated by the autoregressive type simulation method, and the super relaxation iteration method was used to solve the matrix of regressive coefficients. The proposed method was applied in the numerical simulation of wind loading on two small examples and the double layer reticulated shell of Chinese National Grand Theater. The results verified the effectiveness of this simulation method .

对大跨度空间结构而言 ,风荷载是结构设计中的主要荷载之一 ,尤其是对柔性大跨度结构体系 ,它比地震荷载显得更重要。本文采用自回归过滤技术 ,考虑三维空间相关性 ,对具有随机性的脉动风荷载进行有效的模拟 ;并采用超松弛迭代法求解大型多自由度结构风荷载模拟中的回归系数矩阵。最后 ,将该数值模拟技术应用于国家大剧院大跨度双层空腹网壳结构的随机风荷载模拟 ,表明该方法可应用于大型大跨度空间结构的风荷载人工模拟

The integral steel platform formwork system is anew kind of formwork system to adapt the construction needs of super high buildings. Considering both time and spatial correlation, useful artificial wind load processes were generated by the autoregressive-type simulation method.Based on wind load processes,the response of integral steel platform formwork system was calculated in time-domain.The results can be referred by design and construction of integral steel platform formwork system.

整体钢平台模板体系是适应超高层建筑主体施工需要的新型模板体系,在我国有广泛的应用前景。采用自回归过滤技术,考虑三维空间相关性,对具有随机性的脉动风荷载进行有效的模拟,根据模拟得到的风载时程曲线对整体钢平台模板体系的风振响应在时域内进行了分析,得出的相关结论可以为模板体系的设计和施工借鉴。

 
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