辽宁地区软土分布区普通公路典型路面结构的研究

The Study on the Typical Pavement Structure for the Common Grade Highway in the Soft Soil Distribution Areas in Liaoning Province

目的研究辽宁软土地区普通公路典型路面结构形式,为普通公路的路面结构设计提供依据.方法通过对软土地区现有普通公路的早期病害形式及其形成原因的分析,提出了辽宁地区软土分布区内普通公路的典型路面结构形式,运用路面结构分析软件对所提出的路面结构受力的合理性进行了验证.结果辽宁省软土分布区内的普通公路路面结构宜铺设垫层,三级公路路面基层厚度应大于24 cm,四级公路路面基层厚度应大于15 cm.结论笔者推荐的软土分布区普通公路路面结构可以用来指导辽宁省软土地区普通公路设计.

In order to recommend typical structure of asphalt pavement of low grade highway for soft soil subgrade in Liaoning province, and provide theoretical base for asphalt pavement structure design, the main reasons for the early asphalt pavement failure are analyzed, and the typical forms of the asphalt pavement for common highway are given according to the theoretical analysis results of the pavement structure. The study indicates that the common grade highway must lay cushion layer and the thickness of base course of three- stage highway should be more than 24 cm and four-stage highway should be more than 15cm. The typical structure forms given in this paper can be used to guide structure design for the asphalt pavement of common grade highway.