基于精细网格的BRT车站疏散模拟研究

摘要

After analyzing current evacuation models,a simulation method using fine grid is proposed according to the functional properties and physical characteristics of BRT station.The evacuation area is divided into fine grids in which can only hold a pedestrian firstly; then on this basis an evacuation model is constructed.The evacuation model is composed of conflict resolution mechanisms and pedestrian movement rules which are consist of the direction chosen and velocity of different types of pedestrian in the evacuation state.Obstacle avoidance principles with vision or without vision and exit transfer intention are included in conflict resolution mechanisms.Finally,Gangding station of Guangzhou BRT is taken as an example in the simulation and the analysis verifies the practicability and feasibility of the evacuation model.%通过分析当前人员疏散模型,结合BRT站台的功能属性与物理特点,提出了一种基于精细网格的BRT公交车站人群疏散模拟方法.将车站疏散区域划分为以固定人均占地面积为单位的精细单元网格,并在此基础上构建了人员疏散模型.人员疏散模型包括疏散人员的运动方向、不同类型人员在疏散状态下的运动速度等人员行走规则和有无视野范围的避障原则、出口转移意愿等冲突解决机制.以广州BRT岗顸站作为模拟站台进行疏散模拟,验证了模型的实用性与可行性.