路面结构的土基应力应变近似计算  

Approximate Calculation of Subgrade Stresses and Strains of Pavement Structures

作　　者：胡洪龙[1] 谈至明[1] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804

出　　处：《同济大学学报（自然科学版）》2013年第4期542-546,共5页Journal of Tongji University:Natural Science

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,土基不同深度的压应力、压应变的变化规律,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.Subgrade stresses and strains for a two-layer pavement structure under dual wheels are first 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 ε, adjacent axle coefficient ζ, position coefficient ε 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.

关 键 词：路面工程 土基 竖向应力 竖向应变 弯曲刚度半径 

分 类 号：U416[交通运输工程—道路与铁道工程]