| 路阻函数关系式推导及其拟合分析研究 |
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| 引用本文： | 王树盛,黄卫,陆振波.路阻函数关系式推导及其拟合分析研究[J].公路交通科技,2006,23(4):107-110. |
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| 作者姓名： | 王树盛 黄卫 陆振波 |
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| 作者单位： | 东南大学,ITS研究中心,江苏,南京,210096 |
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| 摘 要： | 路阻函数在交通分配过程中左右着路径的选择,目前广泛采用的路阻函数是美国公路局提出的BPR函数,但笔者在交通分配的实践过程中使用美国公路局推荐BPR参数得到的结果并不理想。论文推导了路段流量和路段通行时间之间的关系式,比较了BPR函数和推导关系式之间的差异,对推导关系式进行了指数抛物线拟合,并具有良好的效果(相关系数0.99),拟合方程可以作为路阻函数代替BPR函数。论文还对非拥挤路网的BPR函数参数进行了拟合,并获得较好效果。
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| 关 键 词： | 路阻函数 BPR函数 通行能力 抛物线拟合 |
| 文章编号： | 1002-0268(2006)04-0107-04 |
| 收稿时间： | 2004-11-01 |
| 修稿时间： | 2004年11月1日 |
Deduction of Link Performance Function and Its Regression Analysis |
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| WANG Shu-sheng,HUANG Wei,LU Zhen-bo.Deduction of Link Performance Function and Its Regression Analysis[J].Journal of Highway and Transportation Research and Development,2006,23(4):107-110. |
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| Authors: | WANG Shu-sheng HUANG Wei LU Zhen-bo |
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| Institution: | ITS Research Center, Southeast University, Jiangsu Nanjing 210096, China |
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| Abstract: | Link Performance Function is a key factor to traffic assignment,and BPR function is one widely used,but the result is not satisfying when BPR function is used in some cases with its default parameter alfa and belta which are recommended by U.S Bureau of Public Roads.The paper deducted the relationship between link flow and travel time on link and gave an equation to express it.Comparing the equation with BPR function,it was found that there existed great difference between them.In order to find a function to replace the BPR function,an exponent parabolic regression equation is presented by regression method.In addition,the alfa and belta parameters of BPR funcition are gotten by means of regression method. |
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| Keywords: | Link Performance Function BPR function Capacity Parabolic regression |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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