| 高速公路上匝道合流区通行能力经验模型 |
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| 引用本文： | 李文权, 王莉, 王炜. 高速公路上匝道合流区通行能力经验模型[J]. 交通运输工程学报, 2004, 4(2): 80-84. |
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| 作者姓名： | 李文权 王莉 王炜 |
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| 作者单位： | 东南大学,交通学院,江苏,南京,210096;东南大学,交通学院,江苏,南京,210096;东南大学,交通学院,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金项目(50078015) |
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| 摘 要： | 研究了合流区外测车道不同位置车头时距、交通量的变化规律, 分析了高速公路上匝道合流区的通行能力, 运用回归技术和统计方法, 建立了主路外侧车道交通量的实测经验模型, 总结出车头时距的实测经验分布为变阶数的Erlang分布。运用间隙接受理论分析了匝道车辆在高速公路合流区汇入主路的运行状态, 最终建立高速公路上匝道合流区的通行能力模型, 它是主路交通量、匝道交通量、匝道车辆临界间隙、随车时距及加速车道长度的函数。结果表明计算值与理论值基本吻合, 该模型是可行的。
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| 关 键 词： | 交通规划 通行能力 多元回归与统计方法 上匝道 加速车道 经验模型 |
| 文章编号： | 1671-1637(2004)02-0080-05 |
| 收稿时间： | 2003-07-02 |
| 修稿时间： | 2003-07-02 |
Empirical highway capacity model of on-ramp junction |
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| LI Wen-quan, WANG Li, WANG Wei. Empirical highway capacity model of on-ramp junction[J]. Journal of Traffic and Transportation Engineering, 2004, 4(2): 80-84. |
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| Authors: | LI Wen-quan WANG Li WANG Wei |
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| Affiliation: | School of Transportation, Southeast University, Nanjing 210096, China |
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| Abstract: | The laws of flow rate and headway varied with location in outside lane were studied. The highway capacity model of on-ramp freeway junction was analyzed. The empirical flow rate model was set up using regression techniques and statistical methods. It is pointed out that the headway distribution of traffic in outside lane is variable Erlang distribution. The merging behavior of ramp vehicle was analyzed with gap acceptance theory. The empirical highway capacity model of freeway on-ramp junction was set up by analysis the gap acceptance process. The results indicate that calculation value and measurement value almost equal, this model is feasible. 1 tab, 3 figs, 11 refs. |
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| Keywords: | traffic planning highway capacity multiple regression and statistical methods on-ramp acceleration lane empirical model |
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