连续型公交专用道网络布局优化模型

针对以往离散公交专用道网络布局的局限性,从公交专用道布设的现实条件、规划与建设实践入手,利用网络优化方法提出了面向公交走廊的连续公交专用道网络布局双层优化模型.该模型的上层模型是以最小化路网用户总出行时间为目标的连续公交专用道网络布局设计决策,下层模型是以最小广义出行成本为目标的小汽车和公交车客流分配模型,并应用遗传算法(genetic algorithm,GA)求解该模型.通过算例验证了该双层优化模型有效性与实用性,以及连续型专用道网络布局方案相较与离散型方案的优越性.

Optimization Model for Locating Continuous Exclusive Bus Lanes

Aiming at the limitation of disperse exclusive lane locating， a two level optimization model was presented for the location of the continuous exclusive bus lane based on public transit corridor. Realistic conditions， planning and construction practice of exclusive bus lanes locations were explicitly taken into account in the proposed model. The upper-level of the proposed model was the locating model to minimize the total travel time of the whole road network， and the lower-level was the allocation model of car and bus to minimize the generalized travel cost. The genetic algorithm based on the method of successive averages was developed to solve the problem. The test of the effectiveness and practicability of the model and the sensitivity analysis of the key parameters were carried out through a case study， and the continuous exclusive bus lane locations have more superiority than discrete exclusive bus lane locations.