考虑通行能力折减的可变车道优化  

Optimization of variable lane considering reduction of capacity

作　　者：蔡建荣[1] 黄汝晴 黄中祥[1] CAI Jianrong;HUANG Ruqing;HUANG Zhongxiang(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;School of Traffic and Transportation Engineering,Central South University,Changsha 410075,China)

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114 [2]中南大学交通运输工程学院,湖南长沙410075

出　　处：《中南大学学报（自然科学版）》2018年第7期1838-1844,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金重点资助项目(51338002)~~

摘　　要：为有效缓解因潮汐现象所导致的交通拥堵和道路资源闲置并存的问题,在考虑车道数对路段单向通行能力影响的基础上研究可变车道优化设置方法。该方法在确保可变车道实施过程中轻交通流方向正常通行的前提下,基于非均衡经济学理论的价格-数量调节,以系统总出行时间最小为目标构建可变车道优化的混合整数双层规划模型,并采用粒子群优化算法对模型进行求解,以算例的形式验证模型和算法的有效性。研究结果表明:从系统层面优化可变车道设置能够充分利用轻交通流方向闲置的道路资源来提高重交通流方向路段的容量,从而改变其行程时间函数,进而调节流量在路网上的分布并均衡各路段的饱和度;使道路网络结构更好地匹配出行需求,在道路资源一定的情况下有效地降低系统总出行时间。In order to effectively alleviate the coexistence between traffic congestion and road resource idle caused by the tidal phenomenon,the variable lane optimization setting method was studied considering the influence of lane number on road unidirectional capacity.In this method,on the premise that the normal passage of the light traffic flow direction was ensured during the variable lane implementation process,the mixed integer bi-level programming model for variable lane optimization was established based on the price-quantity regulation of disequilibrium economic theory with the minimum total travel time of the system as the goal.Besides,the particle swarm optimization algorithm was used to solve the model,while the validity of the model and algorithm was verified by numerical examples.The results show that optimizing the variable lane setting from the system level can make full use of the idle road resources in the light traffic flow direction to improve the road capacity in the heavy traffic flow direction,which changes the travel time function,and then adjusts the redistribution of traffic flow on the road network and balances the saturation of each road,making the road network structure better match travel demands,and reducing the total travel time of the system economically and effectively in the case of specified road resources.

关 键 词：交通工程 潮汐现象 可变车道 双层规划 粒子群优化算法 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]