典型沥青路面结构路基工作区深度分析

该文基于实测“胎-路”界面条件,分别采用弹性半空间体理论、层状弹性体系理论计算不同工况下典型沥青路面结构的路基工作区深度,计算结果表明路基工作区深度随轴重显著变化,并基于计算结果提出路基工作区深度的推荐值:轴重小于100 kN时,路基工作区深度取0.8 m;轴重小于130 kN时,路基工作区深度取1 m;对于轴重小于150 kN的道路,路基工作区深度建议值为1.2 m。对于路基工作区范围内的土基,必须采取有效的工程处理措施以确保路基路面结构具备足够的承载力。

In this paper,based on the measured"tire-road"interface conditions,the roadbed working area depth of typical asphalt pavement structure under different working conditions is calculated by using elastic half-space theory and layered elastic system theory respectively.The calculation results show that the roadbed working area depth changes significantly with the axle weight.Based on the calculation results,the recommended value of roadbed working area depth is put forward:when the axle load is less than 100 kN,the roadbed working area depth is 0.8 m.When the axle load is less than 130 kN,the depth of roadbed working area is 1m,and for roads with axle load less than 150 kN,the recommended value of roadbed working area depth is 1.2 m.For the soil foundation within the roadbed working area,effective engineering treatment measures must be taken to ensure that the roadbed and pavement structure has sufficient bearing capacity.