Abstract This paper compares three methods for predicting extreme wind-load effects on buildings, allowing for the varying direction of the wind, as well as the windspeed itself. These are the ‘out-crossing’, ‘multi-sector’ and ‘direct calculation’ methods. Wind-tunnel data from a generic tall building, assumed to be located in Melbourne, Australia, at eight different orientations to the climate, have been used to assess the methods, and to compare the results with direct calculation of base moments. The out-crossing method gives reasonable results for about half the building orientations, but underpredicts the responses when the dominant northerly wind direction is not the major contributor to the response calculations. The multi-sector approach although slightly conservative for predictions at low values of average recurrence interval (ARI), is accurate for all responses examined at high values of ARI.

中文翻译：

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风向对结构响应影响的概率方法比较

摘要 本文比较了三种预测极端风荷载对建筑物的影响的方法，考虑到风的变化方向以及风速本身。这些是“交叉”、“多部门”和“直接计算”方法。来自假定位于澳大利亚墨尔本的通用高层建筑的风洞数据，在八个不同的气候方向，已被用于评估这些方法，并将结果与​​基矩的直接计算进行比较。外交叉法对大约一半的建筑物方向给出了合理的结果，但当主要的北风向不是响应计算的主要贡献者时，会低估响应。多部门方法虽然对平均复发间隔 (ARI) 低值的预测略显保守，