自然气流条件下单、双栋建筑三维风场对比模拟研究

Comparative simulation study on three-dimensional wind field of single and double building under natural air flow conditions

在建筑结构特别是高层结构中,风荷载对结构的安全性与适用性有重要影响。为探究风荷载对高层建筑的影响以及周边建筑的风场绕流特性,采用数值模拟的方法,在标准k-ε模型的基础上,对单栋建筑和双栋相同尺寸的建筑静态绕流风场进行了对比分析,得出了建筑物表面风压分布及周围建筑的风场分布情况,为城市的中高层建筑规划、风环境评估以及高层建筑设计提供了理论依据。

In the building structure,especially in the high-rise structure,wind load has an important impact on the safety and applicability of the structure.In order to investigate the influence of wind load on high-rise buildings and the flow characteristics of wind field around surrounding buildings,the numerical simulation method was used,based on the standard k-εmodel.The static wind field around a single building and two buildings of the same size was compared and analyzed,and the wind pressure distribution on the surface of the building and the wind field distribution of the surrounding buildings was obtained.It provides a theoretical basis for the planning of high-rise buildings,wind environment assessment and high-rise building design.