中国安全科学学报 ›› 2023, Vol. 33 ›› Issue (5): 168-173.doi: 10.16265/j.cnki.issn1003-3033.2023.05.1263

• 公共安全 • 上一篇    下一篇

地铁站乘客沿楼梯上行疏散时间预测及安全性评估

杨晓霞1(), 蒋海龙2, 李永行3, 潘福全2, 杨金顺2   

  1. 1 青岛理工大学 信息与控制工程学院,青岛 山东 266520
    2 青岛理工大学 土木工程学院,青岛 山东 266520
    3 北京工业大学 北京市交通工程重点实验室,北京 100124
  • 收稿日期:2022-12-21 修回日期:2023-03-15 出版日期:2023-05-28
  • 作者简介:

    杨晓霞 (1988—),女,山东烟台人,博士,副教授,主要从事智能交通与协同控制、人工智能等方面的研究。E-mail:

  • 基金资助:
    国家自然科学基金资助(62003182)

Prediction of evacuation time and safety evaluation for passengers ascending stairs in subway stations

YANG Xiaoxia1(), JIANG Hailong2, LI Yongxing3, PAN Fuquan2, YANG Jinshun2   

  1. 1 School of Information and Control Engineering, Qingdao University of Technology, Qingdao Shandong 266520, China
    2 School of Civil Engineering, Qingdao University of Technology, Qingdao Shandong 266520, China
    3 Beijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, China
  • Received:2022-12-21 Revised:2023-03-15 Published:2023-05-28

摘要:

为提高地铁站乘客疏散时的安全指数,有必要对瓶颈区域楼梯处的乘客疏散时间进行预测以评估其通行安全性。首先,针对地铁站乘客沿楼梯上行疏散数据难以采集的问题,采用MassMotion仿真软件搭建楼梯场景,模拟乘客沿楼梯上行疏散行为,获取疏散时间基础数据;然后,利用基础数据训练和测试随机森林模型,实现乘客沿楼梯上行疏散时间的预测;最后,以疏散时间、乘客密度、疏散恐慌度为指标,建立疏散安全综合评估模型,用于评估地铁站乘客沿楼梯上行的疏散安全等级。结果表明:所采用的随机森林模型预测结果的平均绝对误差(MAE)为3.45 s,平均绝对百分比误差(MAPE)为3.8%,相较于反向传播神经网络(BPNN)模型和支持向量回归(SVR)模型具有更高的预测准确度;采用疏散安全综合评估模型评估青岛某地铁站的楼梯安全性,得到早高峰时期的疏散安全性评估值为中等。

关键词: 地铁站, 楼梯, 疏散时间, 安全性评估, 随机森林模型, MassMotion

Abstract:

Stairs are the bottleneck areas in the process of passenger evacuation in the subway station. The safety assessment of passengers passing through the stairs helps to formulate the evacuation plan in advance. Firstly, aiming at the difficulty of collecting the evacuation data of passengers ascending the stairs, MassMotion simulation software was adopted to build a stair scene to simulate the evacuation behavior of passengers ascending the stairs, and the basic data of evacuation time were obtained. Then, the random forest model was trained and tested with basic data to predict the evacuation time of passengers ascending the stairs. Finally, a comprehensive evaluation model of evacuation safety was established, and the evacuation safety level of passengers ascending the stairs in the subway station was evaluated with evacuation time, passenger density and evacuation panic as indicators. The research results indicate that mean absolute error(MAE) of the prediction results of the random forest model used in this paper is 3.45 s, and mean absolute percentage error (MAPE) is 3.8%. Compared with back propagation neural network (BPNN) model and support vector regression (SVR) model, the prediction accuracy is higher. The comprehensive evaluation model of evacuation safety is used to evaluate the safety of the stairs in a subway station in Qingdao, and the evaluation value of evacuation safety in the early peak period is medium.

Key words: subway station, stairs, evacuation time, safety evaluation, random forest model, MassMotion