项目名称: 各向异性路面结构力学行为及其参数智能反演研究
项目编号: No.51278188
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: 颜可珍
作者单位: 湖南大学
项目金额: 80万元
中文摘要: 碎石和沥青混凝土等材料具有各向异性特性,这种材料各向异性对路面结构行为的影响机理尚不清楚,目前基于各向同性弹性体系理论的路面结构设计和分析具有明显的局限性。本项目将考虑路基路面材料的各向异性特性,建立基于横观各向同性材料的路面结构的静、动力学计算模型并提出相应的计算方法,研究各种荷载下路基路面材料各向异性特性对路面结构行为的影响规律,揭示路基路面材料的各向异性特性对路面性能的影响及破坏机理,建立横观各向同性材料的路面结构动力响应正算模型和计算方法,并提出基于横观各向同性路面结构参数智能反演方法。通过本项目的研究有望揭示材料各向异性因素对路面结构性能的影响规律,为修正或指导路面结构设计和路面评价,解释路面结构破坏机理研究提供有价值的理论指导,具有重要的学术意义和工程价值。
中文关键词: 各向异性;沥青路面;模量;层间接触;反算
英文摘要: Subgrade and pavement materials, such as gravel and asphalt mixed material, etc., are anisotropic properties. The influence of this material's anisotropic properties on pavement structure behavior is unclear so far. Currently, the pavement structural design and analysis based on isotropic elastic system has obvious limitations. In the project, based on the anisotropy of the material system, the static and dynamic pavement structure computing model are established on the transversely isotropic material, and the corresponding calculation is given. Under various loads, the study shows the influence law of the anisotropic properties of the subgrade and pavement materials on pavement structure behavior. The failure mechanism and impact of anisotropic characteristics of the subgrade and pavement materials on road performance is revealed. The project establishes the positive operator model and calculation method of pavement structural dynamic response of transversely isotropic materials, and proposes the transversely isotropic parameter intelligent inversion method on gene expression programming algorithm. Through the research, the project is expected to reveal the law of the anisotropy factors on the performance of pavement structure. The study can correct or guide the design of the pavement structure and pavement eva
英文关键词: anisotropic;asphalt pavement;modulus;Bond Condition;inversion