国家金融信息大厦烟囱效应数值分析研究  

Numerical analysis research on stack effect of National Financial Information Center

作　　者：朱伟亮 杨立国[2] 金隆[2] 张盟 张丹 

机构地区：[1]中国五洲工程设计集团有限公司,北京100053 [2]中国建筑科学研究院,北京100013

出　　处：《建筑结构》2017年第17期60-65,共6页Building Structure

摘　　要：建立了6个超高层建筑烟囱效应的测试模型,分析了室内外温差、内隔断、电梯转换及高大空间对烟囱效应的影响,同时对国家金融信息中心大厦进行了烟囱效应模拟分析。计算结果表明:外幕墙压差分布规律与测试模型类似,沿高度总体呈线性变化,但在加强层处出现跳跃,270m高度位置出现高大幕墙空间时,外幕墙压差由负压变为正压,再随高度增加变为负压;内幕墙压差基本不随高度增加而改变;设置转换的电梯可较好地将压差控制在±10Pa左右,未设置转换的电梯及其前室门在竖井上下部区段,压差超出了ASHARE建议的25Pa限值。Six test models were built to investigate the stack effect of super high-rise building. The influences of indoor and outdoor temperature difference,inner partition,elevator conversion and large space on stack effect were analyzed. At the same time,the stack effect of the National Financial Information Center building was simulated and analyzed. The calculation results show that the distribution law of external curtain wall pressure difference is similar to that of the test model,featuring linear variation along the height in general. However,the pressure difference jumps at strengthening layer,and external curtain wall pressure difference changes from negative pressure to positive pressure at the height of 270 m where there is a tall curtain wall space,and then external curtain wall pressure difference becomes negative pressure with increase of the height. Internal curtain wall pressure difference basically does not change along with the increase of the height. The conversion elevator successfully controls pressure difference within around ± 10 Pa,while pressure difference of non-conversion elevator and its atria door in upper and lower sections of shaft exceeds limit value 25 Pa that is suggested by ASHARE.

关 键 词：国家金融信息大厦 超高层建筑 烟囱效应 压差 

分 类 号：TU973.23[建筑科学—结构工程]