平面布局对高层建筑群风环境影响的数值研究  

Numerical study of plan arrangement effect on wind environment around tall buildings

作　　者：马剑[1] 陈水福[1] 

机构地区：[1]浙江大学建筑工程学院

出　　处：《浙江大学学报（工学版）》2007年第9期1477-1481,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家"十五"重点科技攻关计划资助项目;国家自然科学基金资助项目(59908010)

摘　　要：采用基于Reynolds时均方程和重正化群(RNG)k-ε湍流模型的数值模拟方法,分析了由6幢方形截面高层建筑组成的建筑群的周围风环境.通过改变初始呈两行三列布置的各列建筑的横风向间距,得到了8种不同布局型式的建筑群,对各建筑群周围人行高度(2 m)处的风速比和风速矢量场进行了比较.结果显示,当6幢建筑成围合型排列或成两行平行(并列型)排列时风环境较佳,当成Y型或U型排列时巷道效应和风速加强现象比较严重.Numerical simulation was carried out to investigate the wind environmental state around a building complex consisting of six rectangular tall buildings by using the Reynolds averaged equations and the renormalization group （RNG） k-ε turbulence model. The six buildings were initially arranged into two rows and three columns. Eight types of building complex with different plan arrangements were obtained by altering the distance between two adjacent buildings in each column. The wind-velocity ratios and the corresponding velocity vector field around each type of building complex at pedestrian height level （2.0 m） were then examined and compared with each other. The results indicate that the six buildings arranged in a surrounding shape or in two parallel rows generally experience favorable wind environmental conditions. However when the buildings are arranged in a Y- or U-shaped layout the channeling effect and the occurrence of wind speed-up may be significant.

关 键 词：风环境 高层建筑 建筑群 平面布局 数值模拟 

分 类 号：TU312.1[建筑科学—结构工程] V211.3[航空宇航科学与技术—航空宇航推进理论与工程]