半刚性沥青路面动荷载力学响应数值分析

利用ANSYS有限元系统对我省常见的半刚性沥青混凝土路面结构进行动态三维数值分析，经分析，路表动态弯沉值、基层底面拉应力和拉应变均随加载周期的增加呈现先增大后减小的变化规律，当动荷载周期为0．500s时，动弯沉比静弯沉大21％，因此，车辆速度过低会缩短路面的使用寿命。

Analysis of mechanics Response Value of Dynamic Load of Semi-rigid Asphalt Pavement

There is conducted utilizing the finite element system ANSYS to make the analysis of the structure of semi - rigid asphalt concrete pavement, common in our province for dynamic three - dimentional value. Through analysis it has been known that the dynamic deflection value of road surface, the tension stress and stretching strain of base bottom first grow then reduce with addition of loading period. As the dynamic load period is 0.500s, the dynamic deflection 21% is more than static deflection. So too low vehicle speed would shorten the service life of pavement.