Simulation and optimization of road network evacuation in communities for elderly people in Northeast China

doi:10.16265/j.cnki.issn1003-3033.2020.07.019

Abstract

Abstract: In order to address vulnerability of communities for the elderly and improve their evacuation efficiency, typical road space patterns were statistically analyzed with 814 communities in Northeast China extracted by random sampling as research object, and concept of effective evacuation road network density was proposed. Secondly, an evacuation simulation model was constructed, and road network shapes of the elderly communities were simulated by adopting pathfinder software. Finally, a community road network optimization strategy that adapted to evacuation behaviors of elderly people was put forward and verified. The results show that there is a negative correlation between evacuation efficiency and population aging. Square road network has higher efficiency, and as network density increases, impact of aging on evacuation time decreases by 37.3%. It is also found that point-shaped congestion is prone to occur at entrances and exits of blocks and turning points of roads while range of band-shaped congestion is positively correlated with block scale.

Key words: aging community, community road network, pedestrian evacuation efficiency, simulation, occupant flow

CLC Number:

X956

HUANG Lidi, XU Xinxin, LIU Ying, ZHANG Qi, LUO Kaizhou, DONG Zhilong. Simulation and optimization of road network evacuation in communities for elderly people in Northeast China[J]. China Safety Science Journal, 2020, 30(7): 127-132.

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