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基于刚性模型的高频天平测力风洞试验,对外附网架的超高层建筑的基底弯矩和扭矩特性进行了分析,详细讨论了复杂的周边建筑环境对近似方形截面建筑的整体气动力特性的影响。研究结果表明,复杂周边建筑环境对超高层建筑的气动力均值和脉动值影响主要表现为遮挡效应,尤其在两幢建筑物串联、并列时。在考虑风向的前提下,将层间等效静力风荷载及总体基底剪力和弯扭矩的规范值和试验结果进行了比较,可知规范值在一定程度上可以包络试验值,但是经济性不佳。
Based on the rigid-model high-frequency balance wind tunnel test, the moment and torque characteristics of the basement with super-tall buildings attached to the grid are analyzed. The overall aerodynamic characteristics of the complex surrounding buildings are discussed in detail. Impact. The results show that the influence of complex surrounding environment on the mean and the fluctuating value of aerodynamic force in super high-rise buildings is mainly occluded, especially when the two buildings are connected in series and parallel. Considering the wind direction, the equivalent static wind load and the total base shear and bending moment of the standard values and test results were compared, we can see that the standard value to some extent, the envelope test value, but the economy Poor.