中国物理B ›› 2020, Vol. 29 ›› Issue (1): 10401-010401.doi: 10.1088/1674-1056/ab5788

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Analyzing floor-stair merging flow based on experiments and simulation

Yu Zhu(朱萸), Tao Chen(陈涛), Ning Ding(丁宁), Wei-Cheng Fan(范维澄)   

  1. 1 Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
    2 Beijing Key Laboratory of City Integrated Emergency Response Science, Beijing 100084, China;
    3 School of Criminal Investigation and Counter-Terrorism, People's Public Security University of China, Beijing 100038, China;
    4 Public Security Behavioral Science Laboratory, People's Public Security University of China, Beijing 100038, China
  • 收稿日期:2019-07-08 修回日期:2019-10-02 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: Ning Ding E-mail:dingning_thu@126.com
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFC0803300 and 2017YFC0820400) and the National Natural Science Foundation of China (Grant No. 71673163).

Analyzing floor-stair merging flow based on experiments and simulation

Yu Zhu(朱萸)1,2, Tao Chen(陈涛)1,2, Ning Ding(丁宁)3,4, Wei-Cheng Fan(范维澄)1,2   

  1. 1 Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
    2 Beijing Key Laboratory of City Integrated Emergency Response Science, Beijing 100084, China;
    3 School of Criminal Investigation and Counter-Terrorism, People's Public Security University of China, Beijing 100038, China;
    4 Public Security Behavioral Science Laboratory, People's Public Security University of China, Beijing 100038, China
  • Received:2019-07-08 Revised:2019-10-02 Online:2020-01-05 Published:2020-01-05
  • Contact: Ning Ding E-mail:dingning_thu@126.com
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFC0803300 and 2017YFC0820400) and the National Natural Science Foundation of China (Grant No. 71673163).

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.

关键词: evacuation dynamics, merging flow, stair simulation, cellular automaton, high-rise buildings

Abstract: 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.

Key words: evacuation dynamics, merging flow, stair simulation, cellular automaton, high-rise buildings

中图分类号:  (Numerical studies of critical behavior, singularities, and cosmic censorship)

  • 04.25.dc
95.75.-z (Observation and data reduction techniques; computer modeling and simulation) 47.11.-j (Computational methods in fluid dynamics) 89.60.-k (Environmental studies)