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根据高层建筑烟控理论,提出了耦合“活塞风效应”的防排烟系统送风压力设计原则。通过模拟电梯运动的活塞效应对火灾烟气流动的影响,分析推动力增压pin、牵引力增压pout,及各流段之间的静压差p1-p2,p3-p4的变化规律,并根据压差波动,划分电梯井内纵向气流压力特性,建立电梯井内压力分布模型,研究结果为优化现代建筑的防排烟系统压力设计和制定电梯协同疏散策略提供了理论基础。
According to the smoke control theory of high-rise buildings, the design principle of air supply pressure for smoke control system is proposed. By simulating the influence of the piston effect on the smoke flow in the fire, the variation law of the dynamic pressure difference p1-p2, p3-p4 between the boost pressure pin, the traction boost pressure pout, The pressure fluctuation is divided and the vertical airflow pressure characteristics in the shaft are divided to establish the pressure distribution model in the elevator shaft. The results provide the theoretical basis for optimizing the pressure design of smoke control system and developing the coordinated evacuation strategy for elevators.