中文摘要：

现行幕墙规范在脉动风的计算中采用阵风系数，但由于点支式玻璃幕墙在大跨度、超高层结构中得了广泛的应用，使得计算的结果与实际情况相差较大，针对这一情况，有研究提出以简支梁为基础进行对竖直放置的幕墙钢管桁架支撑结构进行风振系数计算，但是在多层大空间中庭结构中，很多采用的是水平布置的空间桁架支撑结构。针对这种幕墙支撑结构提出了新的风振系数计算公式，并利用数值仿真验算验证了公式的准确性。

英文摘要：

Recently the code of glass curtain wall adopts the gust wind fact to calculate fluctuating wind, but as large-span and high curtain walls have been widely used, it is different from the fact. In allusion to this fact, some research had developed the formula of gust response factor for simply-supported truss to calculate the vertical state supporting structure of points-supporting wall. But in the high-rise buildings and large-span structures, some adopt horizontal supporting structure of points-supporting wall. This paper developes the formula of gust response factor for simply-supported truss to calculate the horizontal supporting structure of points-supporting wall. The veracity of this formula was proved by the results of numerical simulation.