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通过FWD实测粒料基层沥青路面结构的弯沉并将路面结构层的反算模量用于路面结构三维有限元力学模拟,分析了粒料基层沥青路面结构在车辆荷载作用下的力学响应特点,对比了粒料基层顶面压应力理论计算结果。通过埋设在粒料基层顶面的土压力盒实测压应力,对两者存在差异的影响因素进行了探讨。
The FWD was used to measure the deflection of asphalt pavement structure and the back-calculation modulus of pavement structure was used to simulate the three-dimensional finite element of pavement structure. The mechanical response characteristics of asphalt pavement structure under the vehicle load were analyzed. Comparing the theoretical calculation results of compressive stress on the top surface of aggregate. The compressive stress measured by the earth pressure cell embedded in the top of the granular aggregate was studied, and the influencing factors of the difference between the two were discussed.