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采用经典摩擦理论及摩尔-库伦理论对沥青路面层间的直剪试验结果进行分析,并引入灰色关联理论,对沥青路面层间抗剪强度的影响因素进行研究,结果表明:层间摩擦系数等于层间内摩擦角的正切值,层间最大静摩擦力与滑动摩擦力的差值构成了层间的粘聚力;竖向荷载、温度及粘结层材料参数对沥青路面层间抗剪强度有不同程度的影响;当粘结材料为乳化沥青时,影响因素按照重要程度依次排序为:竖向荷载>乳化沥青固含量>乳化沥青洒布量>温度,试验中4个因素与沥青路面层间抗剪强度的灰色关联度均大于0.6,说明竖向荷载、乳化沥青固含量、乳化沥青洒布量及温度对沥青路面层间抗剪强度均有重要影响。
Based on the classical friction theory and Mohr-Coulomb theory, the direct shear test results between asphalt pavement layers are analyzed and the gray relational theory is introduced to study the influence factors of the inter-layer shear strength of asphalt pavement. The results show that the interfacial friction coefficient is equal to The inter-layer friction angle tangent value, the difference between the maximum static friction layer and the sliding friction layer constitute the cohesion between the layers; vertical load, temperature and adhesive layer material parameters on the asphalt pavement interlayer shear strength When the binder material is emulsified asphalt, the influencing factors are listed in order of importance: vertical load> solid content of emulsified asphalt> amount of emulsified asphalt> temperature, and between the four factors in the test and asphalt pavement layer The gray relational degree of shear strength is greater than 0.6, which shows that the vertical load, the content of emulsified asphalt, the amount of emulsified asphalt and the temperature have an important influence on the shear strength of asphalt pavement.