季冻地区高等级公路改扩建工程路基稳定性研究综述

Literature Review on the Subgrade Stability of Highway Reconstruction and Extension in Seasonal Freezing Area

阐述高等级公路改扩建工程的定义、方式和特点,论述国内外施工技术和理论研究现状,找出我国季冻地区高等级公路改扩建工程技术理论与实践亟待解决的问题,对新旧路基差异沉降、结合部破坏等路基稳定性问题提出今后需要开展的研究工作。

The definition, mode, characteristic, construction technology, and research actuality of highway reconstruction and extension were elaborated, and problems need to be solved from the views of theory and practice in highway reconstruction and extension were put forward in this paper. Finally, the further research work about stability of subgrade was pointed out, such as differential settlement, and union sections.