高层建筑排列形式对城市风环境影响数值模拟研究

Numerical Simulation Study on the Impact of High-Rise Building Arrangement on Urban Wind Environment

摘要: 现今城市地区高层建筑密集，其不同排列形式会对城市风环境造成不同的影响。本文利用数值模拟技术，通过选取了高层建筑1.5 m处、2/3高程处以及风场y = 267.5 m处三种典型截面，研究了横形排列、竖形排列、方形排列三种不同的排列工况对城市风环境的影响，结果表明：方形排列建筑整体受到的压力载荷和气流速度都最小，出现气流回流涡流的地方均靠近建筑物迎风面和背风面，对其余建筑影响较小，建筑群排列方式方形排列最佳。

Abstract: Nowadays, high-rise buildings are densely distributed in urban areas, and their different arrangement forms will have different impacts on the urban wind environment. This paper uses numerical simulation technology to select three typical cross-sections of high-rise buildings at 1.5 m, 2/3 elevation, and y = 267.5 m in the wind field to study the impact of three different arrangement conditions on the urban wind environment: horizontal arrangement, vertical arrangement, and square arrangement. The results show that the pressure load and airflow velocity of the square-arranged building are the smallest, and the places where the airflow vortex appears are close to the windward and leeward sides of the building, which has little impact on the other buildings. The square arrangement is the best arrangement of the building complex.