项目名称: 基于数字图像处理技术的沥青混合料各向异性特性研究
项目编号: No.51278222
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 建筑科学
项目作者: 程永春
作者单位: 吉林大学
项目金额: 80万元
中文摘要: 传统的沥青混合料研究方法是从宏观角度进行唯象研究,以宏观力学指标作为设计检测的主要依据,但长期的实践经验表明,宏观力学指标的分析在一定程度上难以胜任复杂的沥青混合料力学行为的分析。因此,本研究从沥青混凝土的细观结构入手,利用细观力学的研究方法,对沥青混凝土材料及其力学性质的非均匀性加以分析,结合理论和试验成果建立真实的物理模型,对沥青混凝土材料的力学性能进行研究,从而揭示出沥青混合料细观力学变化引起的宏观响应,同时,真实反映出沥青混合料的受力传递机理和变形机理。具有重要的理论意义和工程应用价值。
中文关键词: 沥青混凝土;粘弹性变形;数字图像处理技术;沥青胶砂;各向异性
英文摘要: Traditional study method on bituminous mixture is phenomenological research from the macroscopic perspective, with macro-mechanics parameters as the main design testing basis. But long-term practical experience has shown that to some extent, the analysis of macro-mechanics parameters can not fit for analyzing mechanical behaviors of complex bituminous mixture. Thus, this paper starts from meso-structure of bituminous concrete, using meso-mechanics method for analyzing asphalt concrete material as well as its mechanical heterogeneity, and establishes real physical model based on theory and test results so as to study on the mechanical performance of bituminous concrete material and then reveal out macro-response caused by meso-mechanics change of bituminous concrete material. Meanwhile, this method can also really reflect the force transferring mechanism and deformation mechanism of bituminous concrete material, which has important theoretical significance as well as engineering application value.
英文关键词: Asphalt concrete;Viscoelastic deformation;Image processing technology;Asphalt mortar;Anisotropy