层间约束引起的双层水泥混凝土路面板的温度应力

Thermal Stress in Two-layer Concrete Slab due to Restraint of Interface

分析双层水泥混凝土路面板温度应力构成 ,导出不同层间结合状况下由层间变形协调条件引起的层间约束应力的计算通式 ,按常用的水泥混凝土路面温度场 ,分析板间约束应变的特征 。

Thermal stress in two layer concrete slab is composed of threee parts:(a) inner stress due to nonlinear distribution of temperature in slab section,(b) warping stress due to reaction restraint of foundation,and (c) stress due to restraint strain of interface. An expression is derived for calculating the thermal stress due to restraint strain of interface with different bonding condition,and the characteristic of restraint strain of interface is also analysed and formulated with conventional temperature regime in concrete pavements.