大兴安岭地区多年冻土特征及病害分析和路基设计研究

Research on Permafrost Characteristics and Disease Analysis and Subgrade Design in Daxing' an Mountains

以省道308线伊尔施至柴桥段公路为例,介绍东北大兴安岭地区内蒙古境内多年冻土的特征和对公路产生的病害,在分析多年冻土地区公路路基产生病害原因的基础上,以地基稳定为核心,提出了针对不同冻土路段的路基设计原则,以减少冻胀、融沉带来的工程病害问题,为公路安全运营提供技术保障。

Based on the highway project from Yiershi to Chaiqiao of line 308,the permafrost characteristics and diseases caused for highways in Inner Mongolia of Daxing an Mountains are introduced.Based on the analysis of the causes of the subgrade in permafrost regions,with the core of the foundation stability,the subgrade design principles for different sections of frozen soil were proposed to reduce the problems of engineering diseases brought about by frost heave and thawing settlement,providing technical support for road safety operation.