Abstract
Evacuation in high-rise buildings has attracted a lot of researchers to study human performance during evacuation process especially since the “911” disaster. However, there is little research studying the effect of initial distribution ratios among the different floors and the impact of sub-optimal illumination on merging behaviors between different pedestrian flows. In this paper, some experiments are presented in a real staircase to analyze the human behavior at the merging area. Through extracting movement characteristics from recorded video, the data about human movement performance is obtained and studied. It is found that when inflows from upstairs are opposite to inflows from stairs at the merging area, the geometrical structure seems to be biased in favor of occupants from floors and merging behaviors negatively affect the walking speed of pedestrians from upper floors. Then it is found there are three phases (free movement, extended zipper effect and following movement) during merging process. Furthermore, there is a relationship between the time pedestrians enter mid-landing and overall speed: speeds of pedestrians decrease and stabilize as the arrival time to the merging area grows. The merging behaviors are influenced by illumination and initial distribution ratios: in the experimental conditions, initial occupants from floors are more than that from upstairs, contributing high density at the merging area regardless of illumination. The results help to better understand the overall movement during stair evacuations and provide valuable data to validate and improve evacuation models.
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References
Averill JD, Song W (2007) Accounting for emergency response in building evacuation: modeling differential egress capacity solutions. US Department of Commerce, Technology Administration, National Institute of Standards and Technology, Building and Fire Research Laboratory
Ding N, Chen T, Zhang H, Luh PB (2015) Stair evacuation simulation based on cellular automata model considering social forces. In: Traffic and granular flow’13. Springer, pp 145–153
Choi J-H, Hwang H-S, Hong W-H (2011) Predicting the probability of evacuation congestion occurrence relating to elapsed time and vertical section in a high-rise building. In: Pedestrian and evacuation dynamics. Springer, pp 37–46
Chen J-J, Wang X-G, Fang Z (2016) Collaborative evacuation strategy of ultra-tall towers among stairs and elevators. Proc Eng 135:169–173
Xu X, Song W (2009) Staircase evacuation modeling and its comparison with an egress drill. Build Environ 44:1039–1046
Proulx G, Fahy RF (2004) Account analysis of WTC survivors. In: Proceedings of the 3rd international symposium on human behaviour in fire. Belfast, UK, pp 203–214
Ding N, Chen T, Zhang H (2017) Experimental study of elevator loading and unloading time during evacuation in high-rise buildings. Fire Technol 53:29–42
Choi JH, Galea ER, Hong WH, Individual stair ascent and descent walk speeds measured in a Korean high-rise building. Fire Technol 50:267–295
The Building Regulations 2000: Approved Document B Fire Safety 2006 Edition, British Standards Institution
Institution BS (2004) Eurocode 2: design of concrete structures: part 1–1: general rules and rules for buildings. British Standards Institution
Boyce KE, Purser DA, Shields TJ (2012) Experimental studies to investigate merging behaviour in a staircase. Fire Mater 36:383–398
Ronchi E, Nilsson D (2014) Assessment of total evacuation systems for tall buildings. Springer
N. F. P. Association (2011) NFPA 101 life safety code. National Fire Protection Association
Code for Fire Protection Design of Tall Buildings [S], 2005
Ronchi E, Nilsson D (2013) Fire evacuation in high-rise buildings: a review of human behaviour and modelling research. Fire Sci Rev 2:1–21
Takeichi N, Yoshida Y, Sano T, Kimura T, Watanabe H, Ohmiya Y (2005) Characteristics of merging occupants in a staircase. Fire Saf Sci 8:591–598
Kratchman JA (2007) An investigation on the effects of firefighter counterflow and human behavior in a six-story building evacuation. University of Maryland, College Park
Shiwakoti N, Gong Y, Shi X, Ye Z (2015) Examining influence of merging architectural features on pedestrian crowd movement. Saf Sci 75:15–22
Reneke PA, Peacock RD, Hoskins BL (2013) Combined stairwell and elevator use during building evacuation. US Department of Commerce, National Institute of Standards and Technology
Peacock RD, Hoskins BL, Kuligowski ED (2012) Overall and local movement speeds during fire drill evacuations in buildings up to 31 stories. Saf Sci 50:1655–1664
Ma J, Song W, Tian W, Lo SM, Liao G (2012) Experimental study on an ultra high-rise building evacuation in China. Saf Sci 50:1665–1674
Zeng Y, Song W, Jin S, Ye R, Liu X (2017) Experimental study on walking preference during high-rise stair evacuation under different ground illuminations. Phys A Stat Mech Appl 479:26–37
Sano T, Yajima M, Kadokura H, Sekizawa A (2016) Human behavior in a staircase during a total evacuation drill in a high-rise building. Fire Mater 41:375–386
Ding Y, Weng F (2016) A comparative study of evacuation strategies for high-rise building via combination of stair and elevator based on computer simulation. Int J Emerg Manag 12:41–54
Huo F, Song W, Lv W, Liew K (2014) Analyzing pedestrian merging flow on a floor–stair interface using an extended lattice gas model. Simulation 90:501–510
Galea ER, Sharp G, Lawrence PJ (2008) Investigating the representation of merging behavior at the floor-stair interface in computer simulations of multi-floor building evacuations. J Fire Prot Eng 18:291–316
Ding Y, Yang L, Rao P (2013) Investigating the merging behavior at the floor-stair interface of high-rise building based on computer simulations. Proc Eng 62:463–469
Hakonen H, Siikonen M-L (2014) Simulation models of merging priorities in staircases. In: Pedestrian and Evacuation Dynamics 2012. Springer, pp 925–933
Hokugo A, Kubo K, Murozaki Y (1985) An experimental study on confluence of two foot traffic flows in staircase. J Archit Plan Environ Eng 358:37–43
Fang Z-M, Song W-G, Li Z-J, Tian W, Lv W, Ma J, Xiao X (2012) Experimental study on evacuation process in a stairwell of a high-rise building. Build Environ 47:316–321
Huo F, Song W, Chen L, Liu C, Liew KM (2016) Experimental study on characteristics of pedestrian evacuation on stairs in a high-rise building. Saf Sci 86:165–173
Melly M (2010) Experimental studies on the effects of merging and deference behaviour on stair-floor landings
Jeon GY, Kim JY, Hong WH, Augenbroe G (2011) Evacuation performance of individuals in different visibility conditions. Build Environ 46:1094–1103
Nagai R, Nagatani T, Isobe M, Adachi T (2004) Effect of exit configuration on evacuation of a room without visibility. Phys A Stat Mech Appl 343:712–724
Guo R-Y, Huang H-J, Wong S (2012) Route choice in pedestrian evacuation under conditions of good and zero visibility: experimental and simulation results. Transp Res Part B: Methodol 46:669–686
Jeon G-Y, Kim J-Y, Hong W-H, Augenbroe G (2011) Evacuation performance of individuals in different visibility conditions. Build Environ 46:1094–1103
Proulx G, Tiller D, Kyle B, Works P, Creak J, Jalite P (1999) Assessment of photoluminescent material during office occupant evacuation. Institute for Research in Construction
Cao S, Song W, Lv W, Fang Z (2015) A multi-grid model for pedestrian evacuation in a room without visibility. Phys A: Stat Mech Appl 436:45–61
Nelson H, Mowrer F (2002) Emergency movement, the SFPE handbook of fire protection engineering, ed. DiNenno P., Walton DW National Fire Protection Association
Tajima Y, Nagatani T (2001) Scaling behavior of crowd flow outside a hall. In: Phys A-Stat Mech Appl 292:545–554
Hall ET (1966) The hidden dimension
von Sivers I, Köster G (2015) Dynamic stride length adaptation according to utility and personal space. Transp Res Part B: Methodol 74:104–117
Yang L, Rao P, Zhu K, Liu S, Zhan X (2012) Observation study of pedestrian flow on staircases with different dimensions under normal and emergency conditions. Safety Sci 50:1173–1179
Campbell C (2012) Occupant merging behavior during egress from high rise buildings. University of Maryland, College Park
Acknowledgement
This research was supported by Key Research and Development Program (2016YFC0802508), the State Key Laboratory of Fire Science in University of Science and Technology of China (Grant No. HZ2018-KF12), Specialized Research Fund for the Doctoral Program of Higher Education of China (20133402110009) and Fundamental Research Funds for the Central Universities (WK2320000035). In addition, the authors want to thank Luca Crociani and Andrea Gorrini for useful discussions and valuable suggestions.
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Zeng, Y., Song, W., Huo, F. et al. Effects of Initial Distribution Ratio and Illumination on Merging Behaviors During High-Rise Stair Descent Process. Fire Technol 54, 1095–1112 (2018). https://doi.org/10.1007/s10694-018-0721-3
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DOI: https://doi.org/10.1007/s10694-018-0721-3