基于等强度原理的双层水泥混凝土路面设计

针对现行《公路水泥混凝土路面设计规范》,利用等刚度原理和几何推导的方法,对水泥混凝土双层板应力特性进行了分析。结果表明,在车辆荷载的作用下,无论上下层板的平面尺寸如何,接触点的上下板所承受应力和板厚、模量成比例关系。通过这一关系,基于等强度原则,可以得出双层板上下层的合理厚度范围。

Two-layer Cement Concrete Pavement Design Based on Equal Strength Theory

The paper analyses the characteristic of two-layer cement concrete slab. The research directed the current"Highway Cement Concrete Pavement Design Standards",and utilized Equal Strength Theory and geometric derivation method. The results show that under the vehicle load effect,the stress on the contact point is proportional to the thickness and modulus,in spife of the plane size of the upper and lower slab. The appropriate thickness range of the upper and lower slab can be drawn though this relationship and equal strength theory.