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在实测数据的基础上,经过数据处理和分析,获得了地铁高峰运行期间换乘乘客在通道和楼梯口的速度-时间、密度-时间、流量-时间曲线。在所得统计曲线的基础上,根据系统动力学理论和方法,结合紧急疏散模型,用Vensim仿真软件建立了基于实测数据的地铁换乘系统动力学模型,并对仿真模拟后的数据进行分析,发现换乘楼梯流量随楼梯长度增加逐渐减小,并最终趋近2.5人/s;随楼梯宽度增加逐渐增大,并最终趋近5.1人/s。通过Origin软件拟合出两条曲线,并得出了流量与长度、宽度的定量关系。
On the basis of the measured data, the speed-time, density-time and flow-time curve of the transfer passengers in the tunnel and the stairs during the peak subway operation are obtained after data processing and analysis. Based on the statistical curves obtained, based on the system dynamics theory and method, combined with the emergency evacuation model, the dynamic model of subway transfer system based on the measured data was established by using Vensim simulation software. The data after the simulation was analyzed and found that The flow rate of the transfer staircase decreases with the increase of the length of the staircase, and eventually approaches 2.5 people / s. With the increase of the staircase width, it gradually increases and eventually approaches 5.1 people / s. Two curves were fitted by Origin software, and the quantitative relationship between flow rate and length and width was obtained.