公路沥青路面结构非线性分析

【作者】 周振华；

【导师】 郑传超；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2003， 硕士

【摘要】 本文采用非线性理论，应用有限元程序MSC.NASTRAN对静载作用下的三维沥青路面结构模型进行了数值响应分析。文中分析了路基土非线性性状对路基土模量测定和对半刚性基层、底基层模量反算的影响程度和其结构响应状况。重点比较了沥青面层作弹塑性分析时与作弹性分析时路面结构响应的不同及弹塑性分析受路面各参数变化影响的规律，同时阐述了其现实意义。最后，文中还对沥青路面破坏作了一些初步研究，提出了一些新的观点。更多还原

【Abstract】 In this paper, finite element program, MSC. NASTRAN, was employed to analyse the structural response of the three-dimensional asphalt pavement under the quiescent load. Effect of the nonlinear property of the subgrade on the determination of the moduli of the subgrade, the semi-rigid subbase and semi-rigid basecourse was explored. Especially, the deferences between the linear analysis and nonlinear analysis for the asphalt pavement were examined. Influence of the pavement parameters on elasto-plastic analysis for asphalt pavement was also studied. Finally, the practical meaning of the parameters was explained. In addition, mechanism of the damage of the asphalt pavement was tentatively probed and some new measures were put forward.更多还原