方形高层建筑顺风向层风力干扰特性

Characteristics of Along-wind Layer Wind Force Interference Effect of Two Square Tall Buildings

利用刚性模型测压试验,研究了受扰建筑层风力的干扰特性(所给出的是顺风向层风力干扰特性).研究了施扰建筑在不同位置时,受扰建筑的顺风向层风力沿高度分布情况,以及层风力干扰因子沿高度分布情况,得到了并列和串列工况的平均层风力干扰因子沿高度分布拟合公式.结果表明,随着施扰建筑位置变化,层风力沿高度分布规律会发生变化,干扰因子沿高度分布规律也会发生变化.顺风向平均层风力干扰因子在某些位置达到1.08左右,顺风向脉动层风力干扰因子在某些位置高达1.5以上.

Layer wind force interference characteristic of disturbed building is studied by rigid model pressure test, and this paper presents the along-wind layer wind force interference characteristic. A study is made of the distribution of along-wind layer wind force and its interference factors by arranging interfering building in different positions. The fitting formulas describing the characteristic of along-wind mean layer wind force interference factors for side by side and tandem arrangement are obtained. The results show that the distribution laws of layer wind force and layer wind force interference factors change with the position of the interfering building. Maximum interference factors of along-wind mean layer wind force and root mean square（RMS） layer wind force are found to be 1.08 and above 1.5 respectively.