在大气边界层风洞中模拟了C,D两类地貌的风场,对某市区办公楼进行了风洞试验,分析了不同风场下高层建筑风压分布特性、风荷载及风致响应特性.结果表明:C类风场下平均风压系数、总体弯矩系数、最大基底剪力和最大基底弯矩均大于D类风场的对应值;C类风场下办公楼风荷载大于D类风场下办公楼风荷载;C类风场下各测点风压谱峰值对应频率均小于D类风场下各测点风压谱峰值对应频率;C类风场下结构顶部峰值加速度大于D类风场下结构顶部峰值加速度.%Two types of terrain categories,C and D,were simulated in a boundary layer wind tunnel,a wind tunnel test was carried out on a tall urban building,and the wind pressure distribution,wind load and wind-induced response of the building model were investigated.The result has indicated that the coefficients of average wind-pressure,overall bending moment,the maximum base shear and the maximum base bending moment under the conditions of terrain categories C are larger than that of terrain categories D.; the wind load of terrain categories C is larger than that of terrain categories D; wind pressure spectral peak corresponds to the frequency of terrain categories C,less than that of terrain categories D; and the accelerated speed of terrain categories C is larger than that of terrain categories D.
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