可变车道的道路交通网络设计优化方法

城市交通流的潮汐性特点造成上、下班高峰期内,道路资源利用的不合理现象:部分道路一个方向交通严重拥挤,而另一个方向几乎没有交通流量。为了合理利用道路资源,缓解交通拥挤,本文提出了双向流量不平衡道路的车道调整方法,并建立了离散双层规划模型,其中处于上层的交管部门通过调整双向道路的车道分配方案,使得整个城市交通网络的系统总阻抗最小。然后本文给出了该双层规划模型的混沌优化方法,最后以经典的SiouxFalls网络为例验证了本文所提方法的有效性。

Optimization Approach for Traffic Road Network Design Problem

In urban transportation network,two-way road flows may be disequilibrium during some time(e. g. on/off duty).Aiming to make full use of the existing road resource and reduce transportation congestion,this paper proposed a two-way road lane reallocating approach under asymmetric flows,and established a corresponding discrete bi-evel programming model in which transportation managers at the upper level minimize the total system co st by reallocating lanes on the two-way road Then,a chaotic optimization algorithm for the bi-level programming model is proposed Finally,the proposed approach was verified through the famous Sioux Falls network.