自动喷水保护下钢化玻璃作为防火分隔的模拟研究

Feasibility test study of toughened glass as fire partition

针对目前大型综合性商业建筑拟采用钢化玻璃作为防火分隔物而钢化玻璃作为防火分隔仍然存在争议的情况,通过建立计算机仿真试验模型研究在自动喷水冷却系统保护下钢化玻璃作为防火分隔物的有效性,提出可行的自动喷水冷却系统保护方案。设定10种工况、13个测点位置,分析钢化玻璃不同位置处的温度变化。研究结果表明:在快速响应普通边墙型喷头喷水保护下,钢化玻璃作为防火分隔是有效的。喷头设置间距缩小可以减小玻璃表面的湿润区,有利于降低玻璃表面的温度。

There is demand that using the toughened glass as fire dividers in large integrated commercial construction, but it is disputed to use the toughened glass as fire dividers. The effec- tiveness of using toughened glass as fire divider under the pro- tection of automatic sprinkler cooling system was studied by computer simulation and the feasible protection scheme of sprin- kler cooling system was proposed. The simulation had lO sce- narios and 13 test points for the analysis of glass temperature atdifferent location. The results showed that： using toughened glass which had been protected by fast response side wall sprin- kler as fire separation was effective. Reducing the distance be- tween sprinklers could reduce the wetting area of the glass sur- face, and help to reduce the temperature of the glass surface.