复杂地形下超高层双塔建筑风荷载特性研究  

Study on wind load characteristics of high-rise twin-towers building over complex terrain

作　　者：肖正直[1] 韦玮[1] 黄诚为 胡李俐[1,2] 孙毅[3] XIAO Zhengzhi WEI Wei HUANG Chengwei HU Lili SUN Yi(College of Civil Engineering, Chongqing University, Chongqing 400045, China Infrastructure Department,China West Normal University,Nanchong 637009,China College of Civil Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]西华师范大学基建处,四川南充637009 [3]重庆科技学院建筑工程学院,重庆401331

出　　处：《四川建筑科学研究》2017年第1期1-7,共7页Sichuan Building Science

基　　金：国家自然科学基金项目(51308568);重庆市教委科学技术研究项目(KJ1401331);教育部中央高校基本科研业务费专项资金资助项目(CDJXY200002;CDJZR12200017)

摘　　要：处于大气边界层中的建筑,由于流体存在着复杂的涡旋以及流动分离,建筑表面的风荷载十分复杂。对于位于城市中心的超高层双塔建筑,地势高差大,其风荷载特性更是复杂。要对这类建筑进行精细化分析,必须详细研究地形及周边建筑对建筑风荷载的影响。本文以刚性模型测压试验为基础,分别研究了超高层双塔建筑的局部风压体型系数、脉动风压系数、层阻力(升力)系数及层阻力(升力)功率谱。并研究了地形、周边建筑对建筑风荷载特性的影响,以及双塔之间风荷载的干扰作用。为复杂地形下超高层双塔建筑风荷载研究提供了参考。There is complex vortex and flow separation of the fluid,in which buildings in the atmospheric boundary layer. The wind load of building surface is very complex. Located in the city center, where the high-rise twin-towers buildings, for the reason of terrain elevation, it is more complex of the characteristics of wind load. To make the meticulous analysis of this kind of building, must study the effects and the surrounding terrain construction on the building of wind load in details. Based on the rigid model wind tunnel test, this paper studys the wind pressure coefficient of the local system, high-rise twin-towers building fluctuating wind pressure coefficient, drag （lift） coefficient and power spectrum of drag （ lift）, a researches the impact of terrain, the surrounding buildings of architectural characteristics of wind load and wind load, the interference effect between the twin towers. Provide the reference for the wind loading on twin-towers high-rise building over complex terrain.

关 键 词：风荷载 双塔建筑 复杂地形 刚性模型 风洞试验 

分 类 号：TU973.213[建筑科学—结构工程]