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路面不平整条件下 ,动荷载作用引起的水泥混凝土路面板底应变对路面开裂破坏的影响较为严重。本文以某一不平整试验路段为例 ,利用三维非线性动力有限元数值计算方法 ,对不同车速、不同路面厚度和不同路面平整度条件下板底的动力响应进行了计算 ,通过分析得出不平整路面上动荷载引起的位移、应变与车速之间的关系 ,为路面的开裂破坏机理分析和防治措施的研究提供依据
Pavement under uneven conditions, the dynamic load caused by the impact of cement concrete pavement bottom of the road cracking on the impact of more serious. In this paper, an uneven test section is taken as an example to calculate the dynamic response of the bottom under different vehicle speeds, different road thicknesses and different road surface flatness using three-dimensional nonlinear dynamic finite element numerical calculation method. The relationship between displacement, strain and speed caused by dynamic load on smooth road pave the way for the analysis of pavement cracking mechanism and prevention and control measures