地下狭长空间排烟性能化设计

结合某狭长型地下工程的结构特点，利用FDS软件对该工程的通信工作区进行了全尺寸数值模拟。通过性能化设计的手段，合理设定火灾场景和人员密度，研究了不同机械补风条件下双向型走廊和单向型走廊的排烟效果，并对人员安全疏散进行了性能化评估。结果表明，针对本工程模型采取机械排烟时，机械补风比不宜过大，机械补风量宜取排烟量的50%~75%。

Performance-based design of smoke exhaust in long and narrow underground space

Based on the structural characteristics of a long and narrow underground project, the communication work area of the project is simulated by FDS software. Through the means of performance-based design, setting fire scene and personnel density reasonably, the smoke exhaust effect of two-way corridor and one-way corridor under different mechanical air supplement conditions is studied, and the performance-based evaluation of personnel safety evacuation is carried out. The results show that when mechanical exhaust is adopted for the project model, the mechanical air supplement ratio should not be too large, and the mechanical air supplement volume should be 50% ~ 75% of the exhaust volume.