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针对目前路基工作区未考虑路面结构、交通荷载、路基加固对路基工作区影响的现状,展开路基工作区影响因素的研究。借助ANSYS软件,计算了两种路面结构、3种轴重和两种加固方式下的路基工作区。研究结果表明,路面结构厚度越厚,则路基工作区深度越小,两者呈线性关系,高等级公路的路基工作区比二级公路小;路基工作区随着轴载的增大而增大,两者近似呈线性关系;现行规范把路基上部0～80cm部分作为路基工作区是不够合理的,应根据路面厚度和交通情况分别设置合适的路基工作区;加固路基对减小路基工作区深度有着明显的效果,对于高等级公路,水泥加固效果明显优于石灰加固,对于二级公路,水泥加固与石灰加固效果相当。
Aiming at the current situation that the subgrade working area does not consider the influence of pavement structure, traffic load and subgrade reinforcement on the subgrade working area, the influencing factors of the subgrade working area are studied. With ANSYS software, two kinds of pavement structure, three kinds of axle weight and two kinds of reinforcements under subgrade working area were calculated. The results show that the thicker the pavement structure, the smaller the working area depth of the subgrade is, the linear relationship between them is found. The subgrade working area of the high-grade highway is smaller than that of the second grade highway. The subgrade working area increases with the increase of the axle load , The two approximate linear relationship between the two; the current norms of the upper part of the roadbed 0 ~ 80cm part of the subgrade as a working area is not reasonable, should be based on road thickness and traffic conditions were set up appropriate subgrade work area; reinforced subgrade to reduce the depth of work area With obvious effect, for high-grade highway, cement reinforcement effect is obviously better than lime reinforcement, for the second-class highway, cement reinforcement and lime reinforcement effect is quite.