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基于元胞自动机模型研究以大货车为主的港口道路交通系统交叉口设计参数优化。在STNS模型的基础上,建立了一个以大货车为主的混合交通流的港区道路交叉口元胞自动机模型,其中大货车在换道和转弯时分前后两部分分别演化。从交通组织和渠化方面分别设计、构思可能方案,对货物集疏运高峰期的交通流非线性行为进行仿真和指标计算,确定设计参数的优化值。结果表明对该类以大货车为主的交叉口,可依据交通实际需求通过建立所提出的元胞自动机模型,确定是否拓宽进口车道及合理长度、转弯半径合理长度,从而达到抑制交通拥堵,提高道路实际通行能力的目的。
Research on Design Parameters Optimization of Port Road Traffic System Intersection Based on Cellular Automaton Model. Based on the STNS model, a Cellular Automata model of port intersection is established, which is composed of large trucks and mixed traffic flows. The large trucks are evolved respectively before and after lane changing and turning. From the aspects of traffic organization and canalization, we design and conceive possible solutions to simulate and calculate the nonlinear traffic flow during the peak period of cargo collection and delivery, and determine the optimal value of the design parameters. The results show that for such large truck-based intersections, the proposed cellular automaton model can be established according to the actual traffic demand to determine whether to broaden the import lane and reasonable length and turn radius reasonable length so as to restrain traffic congestion, The purpose of improving the actual capacity of the road.