公路路基强度设计方式优化分析

Design Mode Optimization of Highway Subgrade Strength

路基路面结构在运营中主要承受交通车辆的作用,它的实际工作状态与现行的静态力学计算体系有较大的差距。汽车荷载是移动荷载,特别是重载汽车在路面不平顺处对路基路面结构产生较大的动载作用。在公路设计中,应从静力学设计转变到动力学设计,提出新的力学设计模型,将路基填料的动强度和动模量与路基路面结构的设计结合起来,以更好地对路基路面结构进行优化设计。

Subgrade-pavement structure mainly bears the action ot traffic during operation. Its actual work state has comparatively great difference compared with the static mechanical computing system. Vehicle load is moving load, especially the over-loading vehicles will bring great dynamic load action on subgrade-pavement structure at the site where the pavement is not smooth. In highway design, the static mechanics design should be transferred to dynamic mechanics design, and new mechanical design model should be proposed. The dynamic strength and dynamic module of subgrade filling should be combined with the design of subgrade-pavement structure in order to realize the optimum design of subgrade-pavement structure.