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利用ANSYS有限元软件中热-结构耦合单元,对沥青路面温度应力进行数值模拟。结果表明:沥青面层厚度对面层层底最大温度应力的影响要大于其对路表温度应力的影响;沥青路面路表和面层底的最大温度应力均随着沥青混合料的温缩系数、沥青面层模量和日温差的增大而增大,但路表的最大温度应力随着这3个参数的变化更加明显;半刚性基层的厚度和模量对沥青路面路表和面层底的最大温度应力的影响均有限。
The temperature stress of asphalt pavement is numerically simulated by using thermo-structural coupling element in ANSYS finite element software. The results show that the influence of the asphalt surface thickness on the maximum temperature stress of the surface layer is greater than the impact on the temperature and stress of the road surface. The maximum temperature stress of the road surface and surface layer of the asphalt pavement varies with the temperature shrinkage coefficient of the asphalt mixture, Asphalt surface modulus and day temperature difference increase, but the maximum temperature stress of the road surface changes more obviously with the three parameters; the thickness and modulus of the semi-rigid base layer on the asphalt pavement road surface and the surface of the bottom The effects of maximum temperature stress are limited.