中马标准顺风向风载对比研究

Contrastive Study on Wind Action in Along-wind Direction Between Chinese and Malaysian Code

为了解马来西亚标准顺风向风载的计算方法,介绍了中国标准GB 50009—2012《建筑结构荷载规范》及马来西亚标准MS 1553:2002《建筑结构荷载实践标准》顺风向风载的计算。对比研究了其中顺风向风压系数,如体型系数、风压高度变化系数、风振系数,并进一步讨论了中马标准之间各系数的区别。通过比较中马标准中风载大小的具体算例,表明:对于同一场地的刚性建筑,基于马来西亚标准的风载要高于基于中国标准的风载;对于风敏柔性建筑,从地面起始处马来西亚标准风载高于中国标准风载,随着高度增加,中马标准风载差距在减小,当建筑达到一定高度时,中国标准风载在某个高度可能超过马来西亚标准风载。

In order to understand the calculation method of along-wind direction in Malaysian code,this paper introduces calculation about along-wind direction wind load action of Chinese code GB 50009-2012 Load code for the design of building structures and Malaysian code MS 1553：2002 Code of practice on wind loading for building structure.Comparative study of the wind pressure coefficient such as shape factor,wind pressure height variation factor and dynamic effect factor,and further discussed the difference of these factors between Chinese and Malaysian Code.The wind load value is compared between Chinese and Malaysian code with examples,the result shows that wind load based on Malaysian code is higher than that based on Chinese code for stiff building in the same site,for flexible building,from ground level wind load based on Malaysian code is higher than that based on Chinese code,the difference of wind load between Malaysian code and Chinese code is reduced gradually as height increased.When the height of building reaches some value,the wind load based on Chinese code will exceed that based on Malaysian code at some height.