| 国际平整度指数二元曲面函数描述模型的研究 |
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| 引用本文： | 王晖光,陆键. 国际平整度指数二元曲面函数描述模型的研究[J]. 公路交通科技, 2006, 23(7): 38-42 |
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| 作者姓名： | 王晖光 陆键 |
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| 作者单位： | 东南大学,交通学院,江苏,南京,210096 |
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| 摘 要： | 通过建立国际平整度指数(IR I)的数字地面模型来描述基于道路面状的IRI指标概念。在分析研究几类数字地面模型的曲面函数内插方法的基础上,给出了IRI的二元双一次曲面乘积型逼近模型。最后给出了定义和描述同一段道路路面不同时段IRI变化量的乘积型重积分求积公式、IRI均值和标准差、IRI值的变化差均值及IRI值变化差的标准差、IRI值单位时间变化速率等数值解法。
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| 关 键 词： | 国际平整度指数 数字地面模型 乘积型逼近 双一次插值逼近 |
| 文章编号： | 1002-0268(2006)07-0038-05 |
| 收稿时间： | 2005-09-28 |
| 修稿时间： | 2005-09-28 |
Study on Description Model of International Roughness Index with Duality Curved Surface Function |
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| WANG Hui-guang,LU Jian. Study on Description Model of International Roughness Index with Duality Curved Surface Function[J]. Journal of Highway and Transportation Research and Development, 2006, 23(7): 38-42 |
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| Authors: | WANG Hui-guang LU Jian |
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| Affiliation: | Transportation College Southeast University, Jiangsu Nanjing 210096, China |
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| Abstract: | The authors described the conception of index IRI on road surtace condifion,by establishing digital terrain model of international roughness index(IRI).Product type approach model about IRI with duality twin linear curved function is choosed to be given.Based on curved surface with interpoletion approach bivariate double curved product approximation model was studied and analyzed with the IRI digital terrain model.Finally,some numerical value solutions to define and describe product multiple integral quadrature formula for IRI varietion is given for same road section in different time period,Mean value and standard deviation of IRI,mean value and standard deviation of variation difference of IRI,variation rate per unit time of IRI. |
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| Keywords: | international roughness index digital terrain model product type approach interpoletion approxi mation approach with twin linear function |
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