| 沥青混合料二维数字重构技术及离散元模型 |
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| 引用本文： | 常明丰,裴建中.沥青混合料二维数字重构技术及离散元模型[J].公路,2010(2). |
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| 作者姓名： | 常明丰 裴建中 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室,西安市,710064 |
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| 基金项目： | 国家自然科学基金项目,基金编号50608006 |
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| 摘 要： | 沥青混合料由沥青结合料、集料和空隙构成,在离散元模型中的数字重构包括沥青结合料的重构、集料的重构和混合料的重构。以二维圆形颗粒对不同组分指定相应的接触特性,以反映各组分的力学机理,从微观角度给出了沥青混合料的结合特性,并利用离散元方法生成3种具有代表性空隙率的沥青混合料微观模型,以颗粒间的接触力矢量反映不同沥青混合料的骨架变化。
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| 关 键 词： | 沥青混合料 沥青结合料 集料 离散元方法 数字重构 |
Two-Dimension Digital Reconstruction Technology and Discrete Element Model of Asphalt Mixture |
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| CHANG Ming-feng,PEI Jian-zhong.Two-Dimension Digital Reconstruction Technology and Discrete Element Model of Asphalt Mixture[J].Highway,2010(2). |
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| Authors: | CHANG Ming-feng PEI Jian-zhong |
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| Institution: | Key Laboratory of Ministry of Education for Special Area Highway Engineering;Chang'an University;Xi'an 710064;China |
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| Abstract: | Asphalt mixture is composed of asphalt binder,aggregate and air voids,then the digital reconstruction includes the reconstructions of asphalt binder,aggregate and mixture in discrete element model.In this paper,different components are specified corresponding contact characteristics by two- dimension circular particles to reflect the mechanical mechanism of different components and the cohesion properties of asphalt mixture from microscopic angle are given.In addition,three microscopic models of asphalt mix... |
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| Keywords: | asphalt mixture asphalt binder aggregate discrete element method digital reconstruction |
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