摘要
以某医院的异型开敞屋盖为研究对象,分析了其周围的流场分布及平均风荷载的分布情况。采用Realizable k-ε湍流模型,根据屋盖的主要特征建立了相应的简化模型,并进行了模拟分析。结果表明,异型开敞屋盖与主体建筑之间存在特殊的位置关系,导致屋盖与后方建筑之间极易形成漩涡。当屋盖正面直接面对风向时,气流会受到堵塞效应的影响,使得屋盖迎风面的风荷载相对较小,此时体型系数约为0.1。当屋盖侧面朝向风向时,气流相对畅通,屋盖表面主要受到风吸力的作用。研究结果可为建筑方案的早期设计提供参考。
Taking the special-shaped open roof of a hospital as the study object,the distribution of the flow field around it and the distribution of the mean wind load are analyzed.By adopting Realizable k-εturbulence model,the corresponding simplified model is established according to the main characteristics of the roof cover,and simulation analysis is carried out.The results show that there is a special positional relationship between the shaped open roof cover and the main building,resulting in a vortex easily formed between the roof cover and the rear building very easily.When the front side of the roof is directly facing the wind direction,the airflow will be affected by the blocking effect,which makes the wind load on the windward side of the roof relatively small,and at this time,the coefficient of body shape is about 0.1.When the side of the roof is facing the wind direction,the airflow is relatively unobstructed and the roof surface is mainly subject to wind suction.The results of the study can provide a reference for the early design of building programs.
作者
康佳鑫
KANG Jia-xin(East China Architectural Design&Research Institute Co.,Ltd.,Shanghai 200011,China)
出处
《河南城建学院学报》
CAS
2024年第1期79-85,共7页
Journal of Henan University of Urban Construction
关键词
异型开敞屋盖
体型系数
数值模拟
风荷载
special-shaped open roof
shape coefficient
numerical simulation
wind load
作者简介
第一作者:康佳鑫(1995-),女,河南洛阳人,硕士,研究方向为结构风荷载分析等。E-mail:191035689@qq.com。
