基于CAM的港口道路交叉口设计参数优化  

Optimization of Design Parameters for Intersection of Port Road Based on CAM

作　　者：庞明宝[1] 吴淑香[1] 蔡章辉 

机构地区：[1]河北工业大学土木工程学院,天津300401

出　　处：《公路交通科技》2016年第1期103-111,共9页Journal of Highway and Transportation Research and Development

基　　金：天津市科技支撑计划重点项目(12ZCZDSF0 0300);河北省自然科学基金项目(E2015202266)

摘　　要：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。The optimization of design parameters for mainly large truck oriented intersection of road traffic system in port based on CAM is studied. Based on symmetric two-lane Nagel-Schreckenberg（ STNS） model,a cellular automaton model of intersection for large trucks with mixed traffic flow in port district is established,where large truck is divided into 2 parts for evolution respectively when it changes lane and turns. From the aspects of traffic organization and channelization,the possible design schemes are conceived.The nonlinear behavior of traffic flow in peak period of port cargo＇s collecting and distributing is analyzed and the indices are computed via the simulation experiment,and the optimized values of design parameters are obtained. The result shows that whether to broaden the entrance lane or not,the reasonable length,and the turning radius,can be determined by establishing the proposed CAM according to the actual traffic demand for mainly large truck oriented intersection,thus the traffic jam phenomena can be suppressed and the goal of improving road capacity can be realized.

关 键 词：交通工程 交叉口 元胞自动机模型 元设计参数优化 大型货车 港口道路交通系统 

分 类 号：U491.233[交通运输工程—交通运输规划与管理]