双C型冷弯薄壁复合墙板系统抗火性能研究

为研究双C型冷弯薄壁复合墙板系统的抗火性能,运用经试验验证的复合墙板系统温度场的ANSYS分析方法,分析了不同影响因素对复合墙板在火灾下轻钢龙骨的升温规律的影响.结果表明,防火面板厚度、防火面板材料、墙体填充物和墙体厚度对轻钢龙骨升温影响较大,而轻钢龙骨厚度、轻钢龙骨间距对轻钢龙骨升温影响较小.对81个不同影响因素的复...

Research on the efficiency of smoke exhausting with diverse air make-up ways in atrium subway station

In order to make the smoke exhausting efficiency of the atrium subway station higher, the influence of different air make-up ways was studied. In this paper, the numerical simulation analysis method is used to analyze the influence of different air make-up ways and volumes on the smoke exhausting efficiency under different scenarios as natural air supplement and mechanical air supplement in station hall or platform. The research shows that when the smoke exhausting volume in station hall is certain, the smoke exhausting efficiency is the highest by using the platform mechanical air make-up. And when the air supplement volume is between 30% and 50%, the best smoke exhausting effect can be achieved.