To study the wind force of super high-rise buildings with hexagonal section, a series of wind tunnel tests of synchronous pressure models were carried out. The alongwind force coefficient, as well as the power spectral density (PSD) and the RMS base moment of crosswind force were studied. Thereafter, the empirical formulae of wind force were established. Meanwhile, wind tunnel tests of multiple-degree-of-freedom (MDOF) aero-models were conducted to measure the crosswind responses. The aerodynamic damping ratios were identified by analyzing the time histories of measured responses. Finally, the aerodynamic damping ratios obtained from the aero-model test and the analytical model of wind force obtained from the synchronous pressure model were combined to calculate the crosswind dynamic response. The comparison between the wind induced response of calculation result and that of aero-model test shows that the wind force analytical model proposed in this paper is reliable. This study can provide references for the wind resistance design and standard improvement of super high-rise buildings with hexagonal section.

为了研究具有六边形截面的超高层建筑的风力，进行了一系列同步压力模型的风洞试验。研究了顺风力系数，以及横风力的功率谱密度（PSD）和RMS基本矩。此后，建立了风力的经验公式。同时，进行了多自由度（MDOF）航空模型的风洞测试，以测量侧风响应。通过分析测量响应的时间历史来确定空气动力学阻尼比。最后，将通过航空模型试验获得的空气动力学阻尼比和从同步压力模型获得的风力分析模型相结合，以计算侧风动力响应。计算结果与航空模型试验的风致响应的比较表明，本文提出的风力分析模型是可靠的。该研究可为截面为六边形的超高层建筑的抗风设计和标准改进提供参考。