作　　者： ; ; ;

机构地区： 同济大学土木工程学院土木工程防灾国家重点实验室

出　　处： 《同济大学学报（自然科学版）》 2004年第2期152-156,共5页

摘　　要： 首先采用测力天平模型风洞试验研究了2栋高层建筑间的静力干扰效应,得到2个相同的方形截面建筑在不同相对位置时的静力干扰因子Fm.然后基于Fluent 6平台采用RNG(renormalization group,重整化群理论)κ-ε湍流模型,计算了D类地貌风场中2栋高宽比均为6的方形高层建筑模型(10 cm×10 cm×60 cm)在串列、并列和偏置状态下的静态三维流场和风荷载;并与风洞试验得到的静力干扰因子进行了比较.结果表明,数值模拟方法是研究建筑物静力干扰效应的一种有效途径,相对于试验方法,数值模拟更具有优势. In this paper, wind-induced mean interference effects on two tall buildings are researched by using high-frequency-force-balance technique in TJ-1 boundary layer wind tunnel firstly. The values of mean interference factors (Fm) at various configurations are presented. Then wind induced interference effects on two tall buildings are numerically simulated based on Fluent 6 software platform. The steady flow field and wind loads of two square tall building models (10 cm × 10 cm×60 cm) which have relatively serial, parallel and stagger arrangements respectively, are computed using RNG κ-ε turbulence model in Terrain D. The computed results are then compared with the test results in the form of Fm. The satisfactory agreement of them indicates that the numerical computation technique is an effective tool with good prospects in the research on the interference effects on tall buildings. It can supply reasonable results and occupy obvious advantages over wind tunnel tests.

关 键 词： 高层建筑 静风荷载 干扰效应 数值模拟

领　　域： [建筑科学]