高层住宅内天井烟囱效应的量化及影响因素研究  

The quantification and influencing factor study of stack effect in courtyards in high-rise residential buildings

作　　者：陈艳秋 袁满 陈龙飞 CHEN Yan-qiu;YUAN Man;CHEN Long-fei(Department of Fire Protection Engineering,Southwest Jiaotong University,Sichuan Chengdu 611756,China;SichuanFire Research Institute of MEM,Sichuan Chengdu 610036,China)

机构地区：[1]西南交通大学消防工程系,四川成都611756 [2]应急管理部四川消防研究所,四川成都610036

出　　处：《消防科学与技术》2019年第5期636-640,共5页Fire Science and Technology

基　　金：公安部消防局科研计划项目(2017XFCX17)

摘　　要：提出并验证一种内天井烟囱效应强度的量化方法,即采用内天井底部与外界环境压差量化内天井烟囱效应强度。FDS模拟表明,天井底部与外界环境压差越大,烟囱效应强度越大,火灾烟气越快到达天井顶部,天井顶部温度和烟气浓度受影响越大;内天井烟囱效应强度与内天井进深、宽度呈线性负相关。A method to measure the stack effect in courtyards was proposed and verified: pressure difference between the bottom of courtyards and environment was applied to measure the stack effect.FDS simulation showed that,when the pressure difference was larger,the stack effect was stronger,fire smoke reached the top of the courtyards more quickly,and the temperature and the smoke concentration at the top of the courtyards were influenced more significantly;The stack effect was linearly negatively related to the depth and width of the courtyards.

关 键 词：住宅建筑 内天井 火灾 烟囱效应 FDS 

分 类 号：X913.4[环境科学与工程—安全科学] TU972.4[建筑科学—建筑设计及理论]