| 程泽坤,宋卫国,张俊.基于改进最优迈步模型的楼梯区域疏散模拟[J].火灾科学,2021,30(4):202-213. |
| 基于改进最优迈步模型的楼梯区域疏散模拟 |
| Evacuation simulation of stairs area based on improved optimal step model |
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| DOI：10.3969/j.issn.1004-5309.2021.04.03 |
| 基金项目:国家自然科学基金项目(52074252,71774148) |
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| 中文关键词: 人员疏散 楼梯间 多层建筑 行人流模型 |
| 英文关键词:Evacuation Stairwell Multi-storey building Pedestrian flow simulation |
| 摘要点击次数: 241 |
| 全文下载次数: 1960 |
| 中文摘要: |
| 面对火灾等紧急事件,如何从多层和高层建筑内快速有效地疏散人群是火灾安全研究的一个重要课题。针对楼梯间这一重要疏散场景,考虑行人在台阶与转角平台处的迈步特征差别,在转角平台提出并采用圆形连续场域的生成法和运动规则,构建了一种改进的最优迈步模型。利用该模型重现了NIST进行的疏散演习场景,并从实时疏散人数、总疏散时间和基本图等方面进行了分析。结果表明:模型符合真实楼梯间行人疏散特性,可用于楼梯区域行人流的研究和分析。 |
| 英文摘要: |
| Quick and effective human evacuation from high-rise buildings is an important topic in fire safety research. Aiming at the important evacuation scene - stairwell, this paper considers the difference between the walking characteristics of pedestrians on the steps and the platform, and adopts the static field generation scheme of the continuous field with a round corner to construct an improved optimal step model. The model was used to reproduce the evacuation drill conducted by NIST, and analyzed from the aspects of real-time evacuation number, total evacuation time and fundamental diagram. The results show that the model conforms to the characteristics of pedestrian evacuation in real stairwells, and can be used to simulate pedestrian flow in the staircase area and pedestrian linkage in the multi-story staircase area. |
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