摘要
为优化路面结构,针对不同的沥青稳定基层模量以及不同的结构层厚度等的路面结构组合,应用理论方法对沥青路面结构进行计算,分析了不同因素对沥青稳定基层的层底拉应变、土基顶压应变、表面剪应力等的影响,结果表明:增加基层模量有利于降低基层底和土基顶的应变,较厚的沥青稳定碎石基层并不会增加车辙的危险性,增加底基层厚度能降低基层层底拉应变和表面弯沉,增加土基模量能减小表面弯沉。结果为柔性基层路面的设计、施工提供参考依据。
In order to optimize pavement structure, for pavement structure combination of different modules of asphalt stabilized base and different thickness of structure layer, this paper calculates asphalt pavement structure with theoretical method and analyzes the influence of difference factors on bottom tensile strain, top compressive strain and surface shearing strength of asphalt stabilized base. The result indicates that increase of base modules is favorable to reduce bottom and top strain; thicker asphalt stabilized crushed-stone base would not increase dangers to track; increase of bottom base thickness can reduce bottom tensile strain and surface deflection ; increase of soil base modulus can reduce surface deflection. The results provide referential foundation for design and construction of flexible base pavement.
出处
《路基工程》
2010年第1期123-125,共3页
Subgrade Engineering
关键词
沥青稳定基层
回弹模量
层底拉应变
剪应力
asphalt stabilized base
modules of resilience
bottom tensile strain
shearing strength
