摘要
为分析青藏高原多年冻土特征对青藏公路路基病害的影响,在对青藏高原多年冻土特征进行研究的基础上,讨论了青藏线路基病害类型与形成机理。研究得出:青藏线路基的主要变形形式为不均匀沉陷变形;地温对冻土区路基纵向裂缝的影响显著;青藏沿线路基沉陷病害的百分比随着地温的降低先增大后降低;翻浆病害的百分比随着温度的降低而减小。
In order to investigate the influence of the features of permafrost on the subgrade of Qinghai-Tibet highway, the distresses and their formation mechanism were discussed based on the study of the features of the permafrost on the Qinghai-Tibet plateau. It is found out that the main deformation form of the subgrade of Qinghai-Tibet highway is uneven subsidence; the effect of ground temperature on the longitudinal cracks in the permafrost zone is significant; the percentage of subgrade subsidence along the Qinghai-Tibet highway increases first and then decreases with the dropping of ground temperature; the percentage of frost boil decreases following the dropping of ground temperature.
出处
《筑路机械与施工机械化》
北大核心
2017年第10期90-93,共4页
Road Machinery & Construction Mechanization
关键词
青藏公路
多年冻土
路基变形
纵向裂缝
Qinghai-Tibet highway
permafrost
subgrade deformation
longitudinal crack
