| 交替通行条件下城市高架道路入口匝道通行能力研究 |
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| 引用本文： | 龙科军,杨晓光.交替通行条件下城市高架道路入口匝道通行能力研究[J].系统工程,2004,22(10):54-58. |
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| 作者姓名： | 龙科军 杨晓光 |
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| 作者单位： | 同济大学,交通工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目(70122201/G0114) |
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| 摘 要： | 从交替通行条件下入口匝道车辆合流机理出发，在主线交通流为车队指数分布的假设条件下，将入口匝道合流分为两类：交替合流、自由合流，通过车流轨迹分析和合流概率分析，得到了交替合流与自由合流的通行能力计算模型，以上海延安高架江苏路上匝道为例，利用本文提出的模型对该匝道的通行能力进行了计算，对比理论结果和实际调查数据，模型结果与实测结果一致。
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| 关 键 词： | 通行能力 车流轨迹 交替通行 车队指数分布 高架道路 入口匝道 |
| 文章编号： | 1001-4098(2004)10-0054-05 |
Capacity Analysis on Urban Expressway On-ramp in Alternate Method |
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| LONG Ke-jun,YANG Xiao-guang.Capacity Analysis on Urban Expressway On-ramp in Alternate Method[J].Systems Engineering,2004,22(10):54-58. |
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| Authors: | LONG Ke-jun YANG Xiao-guang |
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| Abstract: | Starting from analysis on merging mechanism of on-ramp in alternate method, this paper classify the ramp merge in two classes:alternation and free merge, on the assumption that the mainline stream obey the bunching exponential (distribution) model. Based on analysis of traffic flow trajectory and merging probability, the dissertation constitute the (theoretic) model of capacity under the circumstance of alternate and free merge. Taking example for Jiangsu on-ramp of Yan'an Expressway in Shanghai, the paper compute the ramp capacity in theoretic model. Comparing the theoretic value (with) observing results, the model is proved. |
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| Keywords: | Capacity Traffic Flow Trajectory Alternate On-ramp Bunching Exponential Distribution Elevated Wasy Entry Encircle |
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