论文部分内容阅读
为解决传统疏散模型在计算人员疏散时间时参数不确定的问题,采用离散算法和Fruin模型对传统的Fogawa疏散模型进行改进,先将时间离散为多个微小单元,假设各时间单元内人流密度不变,然后通过Fruin模型确定Togawa模型参数值,并运用迭代法累计各单元时间得到疏散时间,提高了计算的精确度。以辽宁工程技术大学博雅楼紧急情况下人员疏散为例进行分析,结果表明,改进的Togawa疏散模型预测的人员疏散时间与实际疏散时间相对误差为3.6%,预测精确度较高。
In order to solve the problem of uncertain parameters when calculating the evacuation time of traditional evacuation model, the traditional Fogawa evacuation model is improved by using the discrete algorithm and the Fruin model. Firstly, the time is dispersed into a plurality of tiny units. Supposing the inflow density in each time unit is not Then, the parameters of Togawa model are determined by the Fruin model, and the evacuation time is obtained by using the iterative method to accumulate the unit time to improve the calculation accuracy. The case of Boya Building emergency evacuation in Liaoning Technical University is analyzed as an example. The results show that the relative error between evacuation time and actual evacuation time estimated by improved Togawa evacuation model is 3.6%, and the prediction accuracy is high.