摘要
为探究圆角弧边三角形退台超高层建筑的风效应特点,设计了多组不同形式的退台模型,通过刚性模型同步测压试验,研究了退台气动外形优化方案对建筑风荷载和风致响应特性的影响。结果显示,退台能明显减小此类建筑的顺风向整体体型系数,不同退台形式对建筑表面风压分布产生显著影响;上部退台方案会明显减小建筑的等效风荷载基底弯矩和剪力,而基本不影响基底弯矩和剪力随风向角的变化规律;退台对顶层峰值位移影响较小,但通常会增大结构的顶层横风向峰值加速度。
In order to explore the wind effect behaviors of rounded-corner arc-edge triangular super high-rise building with setbacks, a number of setback building models were designed. Through rigid-model simultaneous pressure measurement test, the influence of aerodynamic shape optimization schemes on the wind load and wind-induced response characteristics of the building was studied. The results indicate that the setbacks significantly reduced the overall along-wind shape coefficients of such buildings, and the wind pressure distribution on the building surface is considerably affected by the different forms of setback. The upper setback scheme can significantly reduce the base bending moment and shear force, but hardly affect the variation of base bending moment and shear force with the wind direction angle. The setbacks have little influence on the top-floor peak displacement, but can usually increase the top-floor peak cross-wind acceleration of the structure.
作者
黄晨
陈水福
王秀泉
裴家庆
HUANG Chen;CHEN Shuifu;WANG Xiuquan;PEI Jiaqing(China United Engineering Corporation Limited,Hangzhou 310052,China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S02期1972-1976,共5页
Building Structure
关键词
圆角弧边三角形
退台
风荷载
风洞试验
风振响应
rounded corner arc-edge triangular
setback
wind-load characteristics
wind tunnel tests
wind-induced dynamic response
