复合式路面与半刚性路面力学响应的对比

the Mechanical Response Comparison of Composite Pavement and Semi-rigid Pavement

利用有限元软件ABAQUS建立复合式路面和半刚性路面的计算模型,并对其力学响应的差异进行全面的分析。结果表明:复合式路面沥青层内剪应力和水平拉应变的最大值分别比半刚性路面小13%、21%;复合式路面水泥混凝土层内的水平拉应力最大值是半刚性路面基层内水平拉应力最大值的2.3倍,但复合式路面水泥混凝土层的疲劳寿命是半刚性路面基层疲劳寿命的2.8倍。

Finite element software ABAQUS was used to establish the calculation model of composite pavement and semi -rigid pavement. Then the difference between their mechanical responses was analyzed comprehensively. The results showed that the max shear stress and horizontal tensile stress of asphalt layer in composite pavement is 13 percent and 21 percent less than those of semi - rigid pavement respectively. The max horizontal tensile stress of concrete layer in composite pavement is as 2. 3 times great as that of the base course in semi - rigid pavement. But the fatigue life of concrete layer in composite pavement is as 2. 8 times long as that of the base course in semi - rigid pavement.