超高层建筑复杂塔冠结构的风压分布与等效风荷载  

Wind pressure distribution and equivalent static wind loads of complex tower crown structure

作　　者：楚晨晖 王浩[2] Chu Chenhui;Wang Hao(Wuxi Environmental Science ＆ Engineering Research Center,Wuxi 214063,China;Department of Civil Engineering,Nanjing University of Aeronautics ＆ Astronautics,Nanjing 210016,China)

机构地区：[1]无锡环境科学与工程研究中心,江苏无锡214063 [2]南京航空航天大学土木工程系,南京210016

出　　处：《黑龙江科技大学学报》2018年第4期471-477,共7页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51208254);江苏省优秀青年基金项目(BK20160083)

摘　　要：为获得复杂塔冠的风压分布特征及等效风荷载取值规律,以台州某多塔超高层综合办公楼工程复杂多面体塔冠为背景,采用刚性模型风洞测压实验采集复杂屋顶结构表面的脉动风压时程数据,利用一致耦合法计算复杂屋顶结构表面风压及等效风荷载。结果表明:塔冠结构的复杂多面体表面对风压、等效静力风荷载分布影响较大,甚至在迎风面某些部位出现吸力现象;结构表面风压、等效静力风荷载在迎风面波动最剧烈,侧面次之,背风面最平稳;结构边缘位置的风压分布、等效静力风荷载与其他位置差异明显,存在边缘效应。该研究为超高层建筑复杂多面体塔冠结构设计提供了参考依据。This paper aims to investigate the law underlying wind pressure distribution static wind loads （ESWLs） of complex polyhedron tower crown structure. The targeted research building on a super high-rise office building tower project involves collecting the fluctuating wind pressure time history data by the wind tunnel test of the rigid model; and calculating the wind-induced dynamic response and ESWLs under different conditions then by using the Consistent Coupling Method（CCM） . The results indicate that complex polyhedral surface of the tower crown structure has such a great effect on the distribution of wind pressure and the ESWLs that suction occurs even on some position of windward surface ;the strongest fluctuation in structural surface wind pressure and equivalent static wind load occurs on windward side and then on the side wind, with a stability on the leeward sidebetween wind pressure distribution and ESWLs of tower crown structure in edge position and other positions, pointing to an edge effect. This study may provide a reference for the design polyhedron crown structure of super high-rise buildings.

关 键 词：塔冠结构 风压 等效静力风荷载 风洞实验 

分 类 号：TU973.213[建筑科学—结构工程]