| 环岛进入通行能力影响因素分析与模型改进研究 |
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| 引用本文： | 邹博,石京,陆化普,袁健.环岛进入通行能力影响因素分析与模型改进研究[J].中南公路工程,2007,32(4):169-173. |
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| 作者姓名： | 邹博 石京 陆化普 袁健 |
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| 作者单位： | 清华大学交通研究所 北京100084 |
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| 摘 要： | 以可接受间隙理论为基础,并假设车头时距服从Cowan M3分布,利用概率的方法,对环岛进入通行能力的理论公式进行了数学推导,并对通行能力公式中的各个参数作了详尽的分析,得出了其中最主要的影响因素。根据实际不是所有进口道车辆均须穿越环岛中所有车道进入环岛的事实,引入新的参数改进了通行能力的计算公式。
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| 关 键 词： | 环岛 通行能力 M3分布 可接受间隙 车头时距 |
| 文章编号： | 1002-1205（2007）04-0169-05 |
| 收稿时间： | 2006-09-30 |
| 修稿时间： | 2006-09-30 |
Influencing Factor Analysis and Improvement of Roundabout Entry Capacity Model |
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| ZOU Bo, SHI Jing, LU Huapu, YUAN Jian.Influencing Factor Analysis and Improvement of Roundabout Entry Capacity Model[J].Central South Highway Engineering,2007,32(4):169-173. |
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| Authors: | ZOU Bo SHI Jing LU Huapu YUAN Jian |
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| Institution: | Institute of Transportation Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Based on the gap acceptance theory and Cowan M3 distribution,this paper gives a mathematical derivation of the roundabout entry capacity formula.Parameters in the formula are analyzed with respect to their impacts on the entry capacity,and those major influencing elements are obtained consequently.In consideration of the fact that not all the entry vehicles have the necessity to cross all the lanes in a roundabout in order to get into it,new parameters are introduced in the capacity formula to ameliorate its consistency with the real entry behavior. |
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| Keywords: | Roundabout Entry capacity M3 distribution Gap acceptance Headway |
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