| 道路通行能力中车道数因素的数学分析 |
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| 引用本文： | 杨小宝,张宁.道路通行能力中车道数因素的数学分析[J].武汉理工大学学报(交通科学与工程版),2008,32(4). |
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| 作者姓名： | 杨小宝 张宁 |
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| 作者单位： | 1. 北京交通大学交通运输学院,北京,100044
2. 北京航空航天大学经济管理学院,北京,100083 |
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| 基金项目： | 国家自然科学基金，教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 在实地调研得出道路平均每车道通行能力随着车道数的增加而边际递减的基础上,参照流体力学的研究方法,得出考虑换道的车道交通流动力学模型.采用特征线分析法得到该模型的解析解.运用数学方法分析了边际递减的原因和递减的规律.并运用实测数据验证了数学解释的合理性,得出换道频率的增加是通行能力递减的主要原因.
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| 关 键 词： | 通行能力 车道数 数学分析 边际递减 |
Mathematical Analysis of Effects of Lanes' Number on Expressway Capacity |
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| Yang Xiaobao,Zhang Ning.Mathematical Analysis of Effects of Lanes'' Number on Expressway Capacity[J].journal of wuhan university of technology(transportation science&engineering),2008,32(4). |
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| Authors: | Yang Xiaobao Zhang Ning |
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| Institution: | School of Traffic and Transportation;Beijing Jiaotong University;Beijing 100044;School of Economic and Management;Beihang University;Beijing 100083 |
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| Abstract: | Methodological gaps exist in the literature on analyzing the relationship between expressway capacity and the number of lanes.Based on extensive field survey of traffic flow in Beijing,the findings show average capacity per lane decreases with increasing number of lanes on uninterrupted expressway segments.An explanation and trend of the decrease are analyzed upon the mathematical analysis.The rationality of the explanation is validated by the surveyed data.It reveals that the increase of lane-changing acti... |
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| Keywords: | expressway capacity the number of lanes mathematical analysis marginal decrease |
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