连续配筋混凝土路面温度应力的有限元分析

为了准确计算连续配筋混凝土路面在温度作用下整个路段任意点的位移和应力,基于钢筋混凝土间粘结滑移效应,考虑地基摩阻力的影响,采用接触有限元理论建立了连续配筋混凝土路面的刚度方程,得出了考虑各个裂缝间隔段和锚固地梁之间联合作用的整个路段各部分应力和位移的有限元解.通过具体算例,研究了连续配筋混凝土路面在温度应力作用下的钢筋...

Finite Element Analysis of Thermal Stress for Continuously Reinforced Concrete Pavement

In order to accurately calculate the displacement and stress of continuously reinforced concrete pavement (CRCP) at any point of road section under the temperature effect, based on the bond\|slip effect between reinforced steel bar and concrete, considering the influence of foundation frictional resistance, the CRCP stiffness equation was established based on the contact finite element theory, and the finite element solutions of stress and displacement at any part of the road section were obtained considering the combined effect of cracks and lugs. According to the calculation example,  the distributions of stress and displacement of  CRCP under the thermal stress were researched. The results show that the assumption that the steel displacement equal to zero is unreasonable, the effect of temperature gradient cannot be neglected, and the lug closing to end has the maximum displacement and internal force.