木结构建筑火灾中防火墙高度对相邻建筑的影响

Influence of firewall height to nearby building in wooden architecture fire

运用FDS软件对防火墙高于屋面0、0.2、0.4、0.6、0.8、1.0m时的单体木结构建筑燃烧过程进行数值模拟,得到在风速为0、3.0、5.0、8.0m/s情况下,相邻4.0、6.0m处建筑屋面的温度分布情况。结果表明,燃烧建筑上风方向的260℃高温区距离随着风速的增加而下降,下风方向随着风速的增加而上升。

Use FDS to simulate the single wooden architecture combustion with firewall 0, 0.2, 0.4, 0.6, 0.8, 1.0 m higher than the roofing, and get the temperature distribution of roofing 4.0, 6.0 m away, with wind velocity of 0, 3.0, 5.0, 8.0 m/s. Results showed that the upwind distance of 260 ℃ high temper- ature area decreases with the wind velocity increasing, and the downwind distance increases with the wind velocity.