大型商业建筑中庭火灾性能化分析研究

对各层中庭开口处未设置防火卷帘的大型商业建筑中庭火灾进行数值模拟,分析其火灾发展过程及烟气蔓延过程,研究该火灾场景下人员疏散的安全性。研究表明:火灾下,烟气通过各层中庭开口处向各楼层内蔓延,并对接近中庭顶部的楼层产生较大影响。但在本文的火灾场景下,人员均能安全疏散。大型商业建筑在各层中庭开口处不设置防火卷帘的设计方法在一定程度上仍然可以保证人员疏散的安全性。

Performance-based Studies on Patio Fire in Large Commercial Building

The patio fire in large commercial building without fire resisting shutter was studied using numerical simulation method.Both the fire development process and smoke spread process were investigated.And the safety of evacuation under this fire condition was explored.The results indicate that: the smoke spread to the inner space through the opening between the patio and every storey during the fire process,and make great influence on the storey near the top of patio.But under the fire condition of this paper,the evacuation was safety.The design of large commercial building without fire resisting shutter at the opening of patio could ensure the safety of evacuation to a certain extent.