摘要
该文以某超高层建筑为例,使用FDS建模软件构建仿真模型,并设置防排烟系统开启且有外界风、防排烟系统开启但无外界风、防排烟系统失效但有外界风、防排烟系统失效且无外界风4种工况,在着火区域布置6个测点,获取各测点的一氧化碳浓度、温度和可见度,并分析烟气蔓延情况。结果表明,外界风会影响烟气蔓延的速度与方向,并且对空气温度也会产生影响,但是不影响一氧化碳浓度和可见度。
In this paper,taking a super high-rise building as an example,a simulation model is constructed using FDS modeling software,and four working conditions are set up:smoke control and exhaust system is turned on and there is external wind,smoke control and exhaust system is turned on,but there is no external wind,smoke control and exhaust system fails,and there is no external wind.Six measuring points are arranged in the fire area to obtain the carbon monoxide concentration,temperature and visibility of each measuring point,and analyze the spread of smoke.The results show that the external wind will affect the speed and direction of smoke spread,and also affect the air temperature,but does not affect the concentration and visibility of carbon monoxide.
出处
《科技创新与应用》
2023年第25期62-65,共4页
Technology Innovation and Application
关键词
超高层建筑
建筑火灾
防排烟系统
边界条件
外界风
super high-rise building
building fire
smoke prevention and exhaust system
boundary condition
external wind
