| 密级配沥青混合料矿料分布分形特征 |
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| 引用本文： | 宿秀丽,李波,刘建勋,李晓娟.密级配沥青混合料矿料分布分形特征[J].长安大学学报(自然科学版),2011(2):12-16. |
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| 作者姓名： | 宿秀丽 李波 刘建勋 李晓娟 |
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| 作者单位： | 长安大学公路学院;甘肃路桥建设集团有限公司;兰州交通大学土木工程学院; |
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| 基金项目： | 交通部联合攻关项目(200235336228); 甘肃省交通科技项目(GLJKY2010) |
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| 摘 要： | 为了确定密级配沥青混合料矿料分形分维的适用条件,利用最小二乘法对矿料级配双对数坐标图进行线性拟合,得到矿料分布分形维数,在此基础上,按照定义的模糊分维对《公路沥青路面施工技术规范》中密级配沥青混合料矿料分形分布特征——分形维数和自相似性进行了判定。结果表明:沥青混合料矿料级配分布是一个模糊分形系统,不具有严格的自相似性,而是统计意义上的自相似;密级配沥青混合料矿料级配的分形维数在2.33～2.59范围内变化,且在同一尺度范围内,级配上限比级配下限具有更高的分维数;密级配沥青混合料矿料级配的分布具有较为显著的一重分形,只需一个分形维数就可以表征该级配的分形特征。
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| 关 键 词： | 道路工程 密级配沥青混合料 分形分布 模糊 级配 自相似性 |
Fractal characteristics of aggregate distribution in dense-gradation asphalt mixture |
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| SU Xiu-li,LI Bo,LIU Jian-xun,LI Xiao-juan.Fractal characteristics of aggregate distribution in dense-gradation asphalt mixture[J].JOurnal of Chang’an University:Natural Science Edition,2011(2):12-16. |
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| Authors: | SU Xiu-li LI Bo LIU Jian-xun LI Xiao-juan |
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| Affiliation: | SU Xiu-li1,2,LI Bo3,LIU Jian-xun1,LI Xiao-juan1 (1.School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China,2.Gansu Road and Bridge Construction Group Co Ltd,Lanzhou 730030,Gansu,3.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | In order to determine the conditions of fractal dimension of aggregate distribution in the dense gradation asphalt mixture,the fractal dimension of aggregate distribution was calculated in the figure with double-logarithmic coordinate of aggregate gradation by the least square method.Based on this,the fractal characteristics of aggregate distribution composed with fractal dimension and self-similarity in dense-gradation asphalt mixture was judged by the defined fuzzy fractal dimension in Technical Specifica... |
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| Keywords: | road engineering dense-gradation asphalt mixture fractal dimension fuzzy gradation self-similarity |
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