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为改善公路养护施工区的交通运行状况,提高养护施工效率,在总结已有研究的基础上,对公路养护施工区交通延误的影响因素进行了深入分析,通过数学解析方法建立了公路养护施工区交通延误模型,包括减速延误、排队延误、限速延误以及加速延误4个部分。接着利用Vissim软件对公路养护施工区进行了交通仿真研究,以特定施工区为例,在不同的V/C比条件下进行了仿真运行和评价。将交通仿真得到的不同V/C比条件下延误值与采用数学解析模型计算得到的结果进行对比,基于交通仿真中得到的施工区交通延误值大于解析模型中计算得到的延误值这一结果,提出了系统延误的概念,并通过拟合得到了该路网中系统延误的计算值。
In order to improve the traffic condition in the road maintenance construction area and improve the construction efficiency of maintenance, based on the existing research, the influencing factors of traffic delay in the road maintenance construction area are analyzed in depth. The road maintenance construction area is established through mathematical analysis Traffic delay model, including deceleration delay, queuing delay, speed limit delay and acceleration delay of 4 parts. Then the Vissim software is used to simulate the road maintenance construction area. Taking a specific construction area as an example, the simulation operation and evaluation under different V / C ratio conditions are carried out. Based on the comparison between the delay value under different V / C ratio and the result calculated by mathematical analysis model, the traffic delay value in construction area obtained in traffic simulation is larger than the calculated delay value in analytical model. The concept of system delay was proposed and the calculated value of system delay in the road network was obtained by fitting.