【摘要】 为研究交通需求的空间分布对网络瓶颈的影响,提出了基于网络均衡的交叉口分流率计算方法.以随机型用户均衡网络为对象,研究网络均衡状态下的路段选择率、交叉口分流率及其相互关系.以Dial加载为基础,根据概率原理和权理论推导得出单路段和双路段选择率的计算公式.根据交通网络均衡状态下的路段选择率和MSA算法与Dial加载的关系,推导了交叉口分流率和分叉流量的计算公式.用数值实验验证了提出的方法的可行性.更多还原

【Abstract】 A method for calculating intersection diversion ratio was proposed to study the influences of space distribution of traffic demands on traffic network bottlenecks.Link proportion,intersection diversion ratio and their relationship were investigated over stochastic user equilibrium networks.On the basis of Dial load, the formulae for single and double link proportions were derived following the probability principle and weight theory.A method for calculating intersection diversion ratio and flow was presented based on the obtained link proportions and the relationship between MSA algorithm and Dial load.A numerical example was presented to illustrate the feasibility of the proposed method.更多还原