首页 | 本学科首页   官方微博 | 高级检索  
     

典型超高层建筑风荷载幅值特性研究
引用本文:顾明,叶丰,张建国.典型超高层建筑风荷载幅值特性研究[J].建筑结构学报,2006,27(1):24-29.
作者姓名:顾明  叶丰  张建国
作者单位:同济大学土木工程防灾国家重点实验室,上海迈祥工程技术咨询有限公司,同济大学土木工程防灾国家重点实验室 上海200092,上海201204,上海200092
基金项目:国家创新研究群体科学基金;教育部高校骨干教师资助计划
摘    要:本文对10个典型的超高层建筑刚性模型进行了测量表面风压的风洞试验,获得了各测量层的阻力、升力和扭矩系数的平均值和根方差。讨论了各测量层风荷载系数随风向角的变化规律,以及高宽比和断面长宽比对方形及矩形建筑风荷载的影响。结果表明,倒角方形、Y形和三角形建筑的风荷载均小于方形与矩形建筑;方形建筑高宽比的增大导致升力系数的根方差明显增大;矩形建筑断面长宽比的增大则使阻力系数的平均值、根方差减少,而升力系数的根方差增大;D类和B类风场中的平均气动力系数相近,而D类风场中脉动气动力系数的根方差大于B类风场。

关 键 词:超高层建筑  风向角  扭矩系数  升力系数  阻力系数  
文章编号:1000-6869(2006)01-0024-06
收稿时间:2006-02-05
修稿时间:2004年8月1日

Amplitude characteristics of wind loads on typical super-tall buildings
GU Ming,YE Feng,ZHANG Jianguo.Amplitude characteristics of wind loads on typical super-tall buildings[J].Journal of Building Structures,2006,27(1):24-29.
Authors:GU Ming  YE Feng  ZHANG Jianguo
Affiliation:GU Ming~,YE Feng~,ZHANG Jianguo~(.State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai,China,.Shanghai MagLucky Engineering Consultation Co.Ltd,Shanghai,China)
Abstract:In this paper,10 typical super-tall building models were tested in a wind tunnel to measure the mean and fluctuating wind pressure distributions.The mean and RMS coefficients of the drag,lift and torsion momemt on the measuring layers were then obtained from the wind pressures.The variations of these coeffieints with wind direction are investigated,and the effects of the aspect ratio and side ratio of cross-section of the square and rectangular buildings on the wind loads are also discussed.The results show that the wind loads on the other three kinds of buildings,i.e.the buildings with triangular,square with four corners cut off and Y-shaped cross-sections are less than those on the square and rectangular buildings;the increasement of the aspect ratio of the square buildings results in the increase of the RMS coefficient of the lift;with the augmentation of the side ratio of the rectangular buildings,the mean and RMS coefficients of the drag decrease and the RMS coefficients of the lift increase;the terrain condition has less effect on the mean wind forces acting on the buildings,while the RMS fluctuating wind forces in the terrain category D are generally larger than those in terrain category B.
Keywords:super-tall building  drag coefficient  lift coefficient  torsion moment coefficient  wind direction
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《建筑结构学报》浏览原始摘要信息
点击此处可从《建筑结构学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号