摘要
为方便中国工程师与澳大利亚咨询工程师沟通,了解澳大利亚标准顺风向风载计算,本文对中国标准GB 50009-2012《建筑结构荷载规范》及澳大利亚标准AS/NZS 1170.2:2011《结构设计荷载第2部分:风载》两部标准中顺风向风载计算进行介绍。对比研究顺风向风压系数如体型系数、风压高度变化系数、风振系数,并进一步探讨中澳标准间各系数的区别。通过具体算例比较中澳标准风载的大小,结果表明对于同一场地刚性建筑,基于澳大利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,从地面起澳标风载高于中标风载,随着高度增加,中澳标准风载差距在减小,当建筑达到一定高度时,中标风载在某个高度可能会超过澳标。
To exchange idea with Australian consultants conveniently for Chinese engineer and to know calculation about along-wind direction wind load action of Australian code, this paper introduces calculation about along-wind direction wind load action in Chinese code GB 50009-2012〈Load code for the design of building structures〉 and Australian code AS/ NZS 1170.2：2011 〈Structural design actions Part 2： Wind actions〉. The comparison and study are made about the factors of along-wind direction wind pressure such as shape factor, exposure factor and dynamic effect factor in Chinese and Australian code respectively, and the further discussion is made about difference of these factors. The wind load value is compared between Chinese and Australian code with examples, the result shows that wind load based on Australian code is higher than that based on Chinese code for stiff building in the same site ; for wind,sensitive flexible building, wind load based on Australian code is higher than that based on Chinese code from ground level, the difference of wind load between Australian code and Chinese code is reduced gradually along height. When the height of building reaches some value, the wind load based on Chinese code will exceed that based on Australian code at somewhere.
出处
《电力勘测设计》
2016年第4期61-66,71,共7页
Electric Power Survey & Design
关键词
中澳标准
顺风向
风载作用
Chinese and Australian code
along-wind direction
wind load action.
