相邻低层四坡屋面房屋在风荷载下的相互干扰作用  

Interference effects on wind loads on two low-rise hip roof buildings

作　　者：焦燏烽[1] 于英霞[1] 陈水福[2] 

机构地区：[1]河南科技大学建筑工程学院,河南洛阳471003 [2]浙江大学土木系,浙江杭州310027

出　　处：《四川建筑科学研究》2009年第6期24-27,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(59908010)

摘　　要：采用数值模拟方法,结合风洞模型试验对两栋低层四坡屋面房屋周围的风场及表面风压进行了计算和分析,数值模拟基于Reynolds时均方程和可实现k-ε湍流模型,采用了具有良好拓扑性能的非结构四面体网格,FLUENT软件实现了流场的数值求解。在单体计算结果和风洞试验结果有较好吻合的前提下,获得了有相邻建筑干扰的情况下,低层四坡屋面房屋的表面风压的变化规律,结论可直接供工程设计参考。Contrasted to wind tunnel test, wind-induced pressure on two low rise and hip roofed buildings was simulated and analyzed using the numerical simulation technique, which is employed the Reynolds-averaged equations and realizable κ-ε turbulence model. In the proceeding, the computational domain was divided into tetrahedral elements of good topology. The flow field was numerically discretized to be solved by FLUENT, a famous CFD software. Good agreement was reached between the computed results and wind- tunnel test results of the single house, the variation trend of wind pressures on the surface of low-rise building under interference of the other house was discussed,which can be referenced for engineering design instantly.

关 键 词：四坡屋面 数值模拟 表面风压 风洞试验 

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]