路面结构的土基应力应变近似计算

Approximate Calulation of Subgrade Stresses and Strains of Pavement Structure

摘要:

从研究双圆荷载作用于双层路面结构时土基应力、应变入手，分析了不同轴型、不同荷位和多层结构条件下的土基不同深度的压应力、应变的变化规律，通过引入旁侧轮系数ξ、邻轴系数ζ和荷位系数φ并归纳了它们的近似回归式，建立了具有普适性和较高精度的路面结构下土基的竖向最大压应力和压应变的近似计算式。

Abstract:

Subgrade stresses and strains for a two-layer pavement structure under dual wheels are firstly studied. In different axles, loading positions and multilayer structure cases, the rules of compressive stresses and strains at subgrade depth are then analyzed. By introducing the concepts of side wheel coefficient ξ, adjacent axle coefficient ζ, position coefficient φ and generalizing approximate regression equations of them, universal and high precision computation expressions of subgrade vertical compressive stresses and strains under pavement structure are established.