软土地基上沥青路面在行车荷载作用下的动力分析

近年来,许多学者对行车荷载作用下柔性路面的动力响应开展了研究,但大部分的研究主要集中在分析柔性路面结构中面层材料和基层材料对路面动力响应的影响,很少有研究考虑到了地基土层,尤其是软土地基对路面结构疲劳和车辙的影响.重点分析了在行车荷载作用下,建造在软土地基上柔性路面的的动力特性,应用ABAQUS中的隐式动力有限元法,充分考虑地基土的弹塑性特性,对车辆单次加载作用下路面结构的特性以及多次加载作用下路面结构的累积变形进行了分析和探讨.

Dynamic Analysis of Asphalt Pavement Constructed on Soft Ground

The dynamic response of asphalt pavement under traffic loads,most of the studies are done to analyze the influence of pavement and base material quality on the pavement system, little work has been done to investigate the contribution of the foundation layers on pavement fatigue and rutting under the dynamic load and to reveal the influence of its elastoplastic behavior on the pavement system. The dynamic response of asphalt pavement system under traffic loads on soft ground was investigated. Analyses are done taking into account soil plasticity of subgrade and ground. The analyses focus on the clay subgrade and clay ground rather than on asphalt and base layers. The computed results of one cycle and more cycles are closely studied. The study, conducted with program ABAQUS, employs a axisymmetric, implicit dynamic finite element method.