湖南大学学报（自然科学版）2025，Vol.52Issue(5)：195-208,14.DOI:10.16339/j.cnki.hdxbzkb.2025060
不同风向圆角弧边截面超高层建筑风荷载特性
Wind Load Characteristics of Super High-rise Buildings with Rounded Arc Edge Section under Different Wind Directions
摘要
Abstract
In practical engineering,super high-rise buildings with the combination of fillet treatment and arc convex edge of the building plan are quite commom.A study on the wind load of this kind of structure was conducted.Based on the wind pressure time history data obtained from the wind tunnel pressure test,the wind pressure distribution,aerodynamic coefficient,and aerodynamic power spectrum of super high-rise buildings with different arc edge bulge rates were analyzed.The influence of the convex rate of the section arc edge on the wind load characteristics of the super high-rise building under different working conditions was obtained.The research shows that in the range of measured wind direction angle,with the increase of arc edge bulge rate,for the wind pressure distribution on the building surface,the average wind pressure coefficient of the leeward side CD and the crosswind side AD is closer to the straight edge model as a whole.The changes of windward surface AB and crosswind surface BC are more complicated.For the mean,fluctuating,and extreme wind pressures,the straight edge model is smaller than the arc edge model,and the arc edge leads to the maximum increase of extreme wind suction by 42%.For the across-wind force coefficient and its power spectrum,the fluctuating lift coefficient and the fluctuating base bending moment coefficient have an increasing trend as a whole,and the peak value of the power spectrum changes irregularly.For the downwind force coefficient and its power spectrum,the average drag coefficient and the average base bending moment coefficient gradually decrease,and the power spectrum has no obvious spectral peak.The downwind force is mainly affected by the incoming flow.The arc edge treatment of the corner square building section may lead to excessive local wind pressure,which has an adverse effect on the wind resistance design of the curtain wall but is beneficial for reducing the downwind wind force of the structure.By analyzing the wind load characteristics of the building surface,a reference can be provided for the aerodynamic shape selection and wind resistance design of such buildings.关键词
超高层建筑/风荷载/风洞试验/圆角弧边化方形截面/风向角Key words
super high-rise building/wind load/wind tunnel test/rounded arc edged square cross section/wind direction angle分类
建筑与水利引用本文复制引用
刘庆宽,杨硕琛,郑云飞,杨雄伟,王乾森..不同风向圆角弧边截面超高层建筑风荷载特性[J].湖南大学学报（自然科学版）,2025,52(5):195-208,14.基金项目
河北省自然科学基金创新研究群体项目(E2022210078),Innovation Research Group Project of Natural Science Foundation of Hebei Province of China(E2022210078) （E2022210078）
中央引导地方科技发展资金项目(236Z5410G),Central Leading Local Science and Technology Development Fund Project(236Z5410G) （236Z5410G）
河北省高端人才项目([2019]63),High-end Talents Project of Hebei Province of China([2019]63) （[2019]63）
河北省自然科学基金青年项目(E2023403007),Natural Science Foundation of Hebei Province(E2023403007) （E2023403007）
河北省教育厅青年拔尖项目(BJK2024130),Science Research Project of Hebei Education Department(BJK2024130) （BJK2024130）
