Safety evaluation method of crowd channelization strategy at entrance of pedestrian passage

doi:10.16265/j.cnki.issn1003-3033.2022.11.0590

Abstract

Abstract:

To solve the problem of insufficient understanding of the potential dangers caused by crowd intervention in the process of implementing the channelization strategy at the entrance of pedestrian passage, a safety assessment method of channelization strategy was proposed. Firstly, from the micro perspective of pedestrian movements, the characteristics of the channelization strategy on the whole process of multi-directional crowd inflow-canalization-confluence were analyzed. Then, the indicators reflecting the orderliness, rapidity and fairness of the whole confluence process were designed based on channelization length, channelization time, and direction change angle, and a three-stage safety evaluation method of the channelization strategy was formulated. Finally, the crowd channelization experiments were carried out based on the actual characteristics to reveal the influence mechanism of confluence direction, the channelization spacing and motion area on the sensitivity of evaluation parameters. The results show that the hierarchical regional distribution of orderliness and rapidity indicators can better reflect the risk characteristics of crowd conflict and crowding in the outer diameter of the lateral confluence and the central axis of the channel. Compared with "two persons wide" channelization strategy, the "one person wide" channelization strategy generates a more balanced interactive feedback on the crowd movement of different confluence directions, and with the increase of the number of entrance confluence directions, its safety promotion is better.

Key words: pedestrian passage, channelization strategy, safety assessment, entrance confluence, crowd movement

ZHUANG Yifan, HUANG Jiajun, LIU Zhigang, YANG Lizhong, PAN Hanchuan. Safety evaluation method of crowd channelization strategy at entrance of pedestrian passage[J]. China Safety Science Journal, 2022, 32(11): 184-191.

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渠化作用阶段	特点	评估参量
DA	无约束,汇流方向自由,离开方向受限	渠化距离,渠化时间,汇流方向角,离开方向角
LS	渠化栏杆约束,进入和离开方向受限	渠化区长度,渠化时间,偏向角,偏移量
DM	通道约束,汇流方向受限,离开方向自由	渠化距离,渠化时间,汇流方向角,离开方向角

工况简称	起始区域	流线方向	每个区域人数	渠化通道宽度w/m	渠化通道/个	渠化通道通过上限人数
Z-0.7	区域1	直行流	126	0.7	6	1
C-0.7	区域2	侧入流	126	0.7	6	1
LC-0.7	区域2、3	两侧汇流	63	0.7	6	1
DC-0.7	区域1、2、3	多侧汇流	42	0.7	6	1
Z-1.05	区域1	直行流	126	1.05	4	2
C-1.05	区域2	侧入流	126	1.05	4	2
LC-1.05	区域2、3	两侧汇流	63	1.05	4	2
DC-1.05	区域1、2、3	多侧汇流	42	1.05	4	2

评估参量	渠化作用阶段	测量区域	等级划分
评估参量	渠化作用阶段	测量区域	Ⅰ	Ⅱ	Ⅲ	Ⅳ	Ⅴ
渠化距离l/m	DA	入口汇流地带	0~0.6	0.6~1.2	1.2~1.8	1.8~2.4	2.4~3.0
渠化距离l/m	DM	步行通道内部	0~2.0	2.0~4.0	4.0~6.0	6.0~8.0	8.0~10.0
渠化时间t/s	DA	入口汇流地带	0~1.0	1.0~2.0	2.0~3.0	3.0~4.0	4.0~5.0
	LS	渠化区	1.2~1.4	1.4~1.6	1.6~1.8	1.8~2.0	2.0~2.2
	DM	步行通道内部	2.0~4.0	4.0~6.0	6.0~8.0	8.0~10.0	10.0~12.0