Analyzing floor-stair merging flow based on experiments and simulation

• 来源期刊: 中国物理B（英文版）
• 关键词: evacuation dynamics merging flow stair simulation cellular automaton high-rise buildings
• 年，卷（期）: 2020,（1）
• 页码范围: 189-196
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab5788

摘要

In most situations, staircase is the only egress to evacuate from high-rise buildings. The merging flow on the stair landing has a great influence on the evacuation efficiency. In this paper, we develop an improved cellular automaton model to describe the merging behavior, and the model is validated by a series of real experiments. It is found that the flow rate of simulation results is similar to the drills, which means that the improved model is reasonable and can be used to describe the merging behavior on stairs. Furthermore, some scenarios with different door locations and building floor numbers are simulated by the model. The results show that (ⅰ) the best door location is next to the upward staircase;(ⅱ) the total evacuation time and the building floor number are linearly related to each other;(ⅲ) the pedestrians on upper floors have a negative influence on the evacuation flow rate.