半刚性基层与沥青层之间界面条件对结构性能的影响

利用弹性层状体系理论计算了在不同层间条件下的半刚性沥青路面沥青层中的剪应力、拉应力分布情况及路表弯沉值,分析了基层与沥青层之间由于层间界面条件变化引起的路面结构受力状态的变化。计算表明基层与面层保持连续的界面条件是十分重要的;过分致密不透水的半刚性基层有可能造成路面的早期损坏。

Structural Influence of Boundary Condition between Asphalt Layer and Semi-rigid Base

One typical structure of asphalt pavement of highway is analyzed for the stress state and surface deflection under different layer coefficient, by using Linear Elastic Layer Program. The computed results show that the stress state will increase much with the change of the condition of conjoint layer. It is very important to keep bound between asphalt layer and semi-rigid base. An excessive dense, impermeable semi-rigid base will reduce drainability of base, which may result in the early failure in asphalt pavement.