摘要
为分析上、下游干扰体对超高层结构风载荷的影响,以452 m超高层塔楼为例,将风载荷作为控制载荷分别建立单塔以及有相邻315 m超高层干扰体的数值风洞模型;分析单塔以及干扰体分别在塔楼风向上游和下游3种计算工况,得出各自的风场流线图和塔楼风载荷体型因数.结果表明,干扰体对塔楼风载荷的干扰效应不仅在315 m高度范围内存在,在此高度之上也有比较明显的干扰效应;干扰体对塔楼主要立面的风载荷的影响有较强的规律性.
To analyze the effect of upstream and downstream interference buildings on the wind load of super high-rise structure, a 452 m super high-rise tower is taken as an example, for which a wind load is taken as its control load. Two numerical wind tunnel models are built respectively. One is the single tower model and the other one is the model with a 315 m interference building. The cases including the single tower and the tower with the interference building located in wind upstream or wind downstream are analyzed respectively. The wind field streamlines and the wind load shape factors under three calculation cases are obtained. The results demonstrate that, the effect of the interference building on the super high- rise tower is not only within the height scope of 315 m, but also above 315 m; the effect of the interference building on the wind load of main facades of the tower is with strong regularity.
出处
《计算机辅助工程》
2013年第5期74-78,共5页
Computer Aided Engineering
关键词
超高层结构
数值风洞
干扰体
体型因数
super high-rise structure
numerical wind tunnel
interference building
shape factor
