Abstract: Based on the measured strain at the bottom of the layer in pavement，the orthotropic unit is adopted to simulate the complicate contact situation between asphalt surface layer and base layer． Through adjusting corresponding unit parameters，the calculation results are consistent with the measured data． The proposed method can improve the reliability of theoretical calculation of the pavement structure，and provide a new theoretical approach for in-depth study of other mechanical indicators of pavement structure．

Key words: orthotropic unit, interlayer contact, strain test

摘要： 依据实测的路面结构层层底的应变值，采用正交异性单元模拟沥青面层与基层之间的复杂接触状况，通过调整相关单元参数可将理论计算结果与实测数据统一起来。提高了路面结构理论计算的可靠性，为深入研究路面结构其它力学指标提供了新的理论方法

关键词: 正交异性单元, 层间接触, 应变测试