联网高速公路有效路径伸展系数的标定  

Effective Paths Stretch Coefficient Calibration for Networking Expressway

作　　者：张建勇[1] 李成江[1] 黄汝存 刘法胜[1] 

机构地区：[1]山东科技大学交通信息研究所,山东青岛266510 [2]山东省交通通信信息中心,山东济南250002

出　　处：《公路交通科技》2008年第1期116-119,共4页Journal of Highway and Transportation Research and Development

基　　金：山东省交通厅科技计划项目(2005R34)

摘　　要：采用启发式搜索算法标定联网高速公路路径伸展系数的值,确定高速公路路网有效多路径搜索范围,利用改进的标号法算法搜索给定路网上任两站点之间的有效多路径。提出联网高速公路多路径交通量计算模型和各路段流量偏差计算模型,分别按最短路法和实际行驶路径(调查取得)在有效多路径集合上进行流量加载,得到有效多路径上交通流漂移量。利用上述模型,对山东省高速公路车辆行驶路径调查数据进行统计分析,标定得出山东省高速公路网路径伸展系数为0.3,出行有效多路径交通量占所有路径总交通量的比例为6.1‰。The heuristic search algorithm was applied to calibrate the path stretch coefficient of expressway network and the scale of effective multipaths was identified. The effective multipaths between two random stations on the given network were searched by the improved label method. The model to calculate traffic volume on the multipaths of expressway network and traffic volume deviation of expressway section was proposed. The traffic volume was assigned by the shortest path method and the actual travel path （obtained by survey） on the effective muhipath set to obtain the traffic volume drift on the multipaths. The investigation data of vehicle travel paths on expressway of Shandong Province were analyzed by using this assignment model, the path stretch coefficient is 0.3 and the ratio of the effective multipaths traffic volume to total paths traffic volume of Shandong Province expressway is 6.1‰ by calibration.

关 键 词：交通工程 伸展系数 系数标定 有效多路径 

分 类 号：U491.13[交通运输工程—交通运输规划与管理]