对世界范围内中庭的分类方法进行汇总,对14栋超高层建筑内的中庭进行特征调研,基于得到的几何特征分布,尝试从火灾烟气发展规律角度探讨如何界定超瘦高中庭.以最不利条件下(即中庭地面中心火源)发生烟气羽流触壁为判别超瘦高中庭的条件,得到超瘦高中庭的判定依据以及呈现明显受约束流动特征的条件.对超瘦高中庭的明确界定,有助于区别于其他类型中庭以及进一步针有对性的开展该类中庭内火灾烟气蔓延、火灾探测、烟气控制等相关研究.%This paper summarizes the classification methods of atrium in the world. Through the investigation on the characteristics of inner atriums in 14 super high-rise buildings, the distribution of their geometric features is gained and basing on that ultra-thin and tall atrium is defined from the perspective of fire smoke development law. Considering the most unfavorable wall contact condition (i.e., fire occurs at the atrium ground center), the judging condition of ultra-thin and tall atrium and the condition for the apparently constrained flow characteristics are obtained. The clear definition of the ultra-thin and tall atrium helps to distinguish the kind from other types of atriums, so as to conduct further related research work on fire smoke spread, fire detection and smoke control in such atriums.
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