摘要
针对一海岛上的重要高层建筑,根据目前国际上主流国家荷载规范的相关规定,对考虑地形影响的风压/风速增大系数取值进行了深入比较和分析。同时,参照日本新颁布的荷载规范分析了地形变化对阵风系数的影响。通过分析和讨论可以看出国际上主流国家的荷载规范在考虑地形影响时风荷载增大系数的取值方面与中国规范的差别及其发展方向,同时为工程主体结构和围护结构的抗风设计中风荷载的取值提供了较为可信的参考。
According to several important load codes/specifications in the world, estimation of the speed-up ratios of windspeed or wind pressure profile considering topographical effect has been discussed based on a practical important tall building built on an island. The effect of topography on the gust factor of windspeed has also been analyzed according to the related provisions of the new load code in Japan. Based on these investigations, the difference of the estimated values of speed-up ratios due to topographical effect among these cedes/specifications including China load code is presented, and the tendency in current revision of the corresponding provisions is discussed. The results can offer a convincible reference to wind load analysis in wind-resistant design for the main structural system and the maintenance components of this practical project, as well as other similar project in the future.
出处
《建筑结构》
CSCD
北大核心
2008年第7期120-124,共5页
Building Structure
关键词
荷载规范
风压/风速增大系数
阵风系数
主体结构
围护结构
load codes
speed-up ratios of windspeed or wind pressure
gust factor
main structural system
maintenance structural component
