东莞第一国际项目连体双塔高层建筑的风荷载.pdfVIP

第 37 卷 第 9 期 建 　筑 　结 　构 2007 年 9 月 东莞第一国际项 目连体双塔高层建筑的风荷载 1) ,2) 1) 3) 2) 3) 侯家健 　李桢章 　谢壮宁 　韩小雷 　石碧青 [提要] 　通过风洞试验研究了截面为切角曲边三角形的连体双塔高层建筑的风荷载特性 ,并作单塔试验比 较 。将风压沿截面进行积分求出沿坐标轴方向的合力 ,然后反算为沿坐标轴方向的整体体型系数 。结果显 示 :风压沿高度变化不大 ,整体体型系数沿高度递减 。单塔最大体型系数对应风向角比坐标轴偏 15°。双塔连 ( ) 线方向 x 向 体型系数上游塔略小于单塔情形 ,下游塔基本为零 , y 向的体型系数略小于单塔y 向的,连体部 分体型系数达 22 。根据规范和试验结果 ,提出了类似工程合理的取值建议 。 [ 关键词] 　风洞试验 　风压分布 　体型系数 　双塔建筑 　连体建筑 Wind Pressure Distribution on Twintower Tall Building with Space Corridor of Dongguan 1st Intl ProjectHou 1 ,2 1 3 2 3 ( Jiaj ian , Li Zhenzhang , Xie Zhuangning , Han Xiaolei ,Shi Biqing 1 The Architectural Design and Research Institute of Guangdong Province , Guangzhou 510010 ,China ; 2 South China University of Science and Technology , Guangzhou 510641 , China ; 3 Shantou University , Shantou 510633 ,China) Abstract :A wind tunnel test has been carried out to investigate the wind pressure distribution on the surface of a twintower and topcorridorconnecting tall building with complex geometry plan , and a singletower test is also performed for comparison . The total wind force of each test floor and the force coefficient are calculated by integrating the pressure along the plan circumference . According to test results , the wind pressure doesnt increase sharply along elevation , and the wind force coefficient decreases when the level increases. The maximum force coefficient of single tower occurs with 15 degrees deflection angle along the respective coordinate axis. For twin tower , the up stream tower force coefficient to x axis is