Abstract This paper takes CAARC standard tall building as example to investigate the effects of corner chamfers on the aerodynamic performance of tall buildings. Five rigid tall building models including CAARC standard tall building as benchmark model and four corner chamfered models with different modification rates from 5% to 20% are tested for pressure measurements in a boundary layer wind tunnel. Based on the experimental results, wind pressure coefficients, local wind force coefficients, base moment coefficients and their power spectral densities from the five models are compared and discussed. The results show that the aerodynamic performance of the tall building models can be effectively improved as the corner chamfer rate increases. The correlation factors for base moment coefficients and power spectral densities are proposed to assess the aerodynamic performance improvement. This paper aims to provide useful information for the wind-resistant optimal design of rectangular tall buildings.

中文翻译：

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CAARC标准高层建筑模型不同角倒角的气动性能

摘要 以中汽协标准高层建筑为例，研究角倒角对高层建筑气动性能的影响。在边界层风洞中测试了五种刚性高层建筑模型，包括作为基准模型的 CAARC 标准高层建筑模型和具有 5% 到 20% 不同修改率的四个角倒角模型。基于实验结果，对五种模型的风压系数、局部风力系数、基矩系数及其功率谱密度进行了比较和讨论。结果表明，随着转角倒角率的增加，高层建筑模型的气动性能得到有效提升。提出了基矩系数和功率谱密度的相关因子来评估空气动力学性能的改进。本文旨在为矩形高层建筑的抗风优化设计提供有用的信息。