典型矩形高层建筑风荷载与风振响应分析

对典型矩形高层建筑进行风洞试验,根据试验结果计算了各风向角下的等效静风荷载和风振响应,同时采用《建筑结构荷载规范》(GB50009-2012)计算方法对该建筑正交角度下的风荷载进行计算,结合风洞试验风荷载与规范计算结果,研究典型矩形高层建筑等效静风荷载和加速度响应分布规律。结果表明:结构基底风致响应最不利角度并非完全出现在正交角度,风洞试验楼层风荷载整体趋势与规范计算结果相同,数值上存在差异,宜以风洞试验结果为准,该结构的顶层加速度响应小于高规限值,舒适度满足要求。

Analysis of Wind-induced Loads and Responses of Typical Rectangular Tall Building

The wind tunnel test of typical rectangul ar tall building was conducted. The equivalent static wind loads and wind vibration response in different wind angle were calculated based on the results of test. The wind loads of orthogonal angles were calculated by calculation method from “Load Code for the Design of Building Structures”（GB50009-2012）. The results of wind tunnel test and load code were compared. The distribution of equivalent static wind loads and acceleration responses of typical rectangular tall building were analyzed. The analysis results show that： the most unfavorable angle of wind base vibration responses are not completely in the orthogonal angles; the overall trend of floor wind loads of wind tunnel test is same as load code, but the specific numbers are different from load code; should be the wind tunnel test results shall prevail; the top acceleration responses of the structure are less than the standard limit;the comfort levels meet the code requirement.