【摘要】 基于格子气模型思想,引入高程因素,建立了模拟地铁站人员疏散的扩展非均匀格子气模型.该模型考虑紧急情况下人员的移动特征,引入多格子方法,根据人员实时步长确定人员移动速度.文中考虑了人员初始分布对疏散过程的影响,同时分析了紧急疏散出口对疏散的作用.利用该模型模拟了人有出口偏好的人员疏散过程和火灾情况下人员疏散过程,算例结果表明,适度地使用紧急疏散出口能提高疏散效率,高程因素的引入也促进了疏散进程.更多还原

【Abstract】 An extended heterogeneous lattice gas model is developed by introducing an altitude factor into the heterogeneous lattice gas model for simulating pedestrian evacuation form subway station.Taking into account the mobile characteristics of pedestrians,the multi-grid method is introduced into the model.The walk speed is determined by the real-time moving step sizes of themselves.The influences of the initial distribution of pedestrians on evacuation process are investigated.The role of emergency exits to evacuation is analyzed.Evacuation processes of pedestrians with exit preference and under fire emergency are simulated by using the model mentioned above.Numerical examples show that moderate use of emergency exits can improve the evacuation efficiency and the altitude factor contributes to evacuation process.更多还原