TEMPERATURE AND DEFORMATION DIFFERENCES BETWEEN SOUTHERN AND NORTHERN SLOPES OF HIGHWAY EMBANKMENT ON PERMAFROST
CHOU Yaling1，SHENG Yu2，WEI Zhenming3
(1. School of Civil Engineering，Lanzhou University of Technology，Lanzhou，Gansu 730000，China；2. State Key Laboratory of Frozen Soil Engineering，Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences，Lanzhou，Gansu 730000，China；3. Gansu Nonferrous Metal Geological Exploration Bureau，Lanzhou，Gansu 730000，China)
Abstract：Based on the observation data of the embankment in test section K369，the characteristics of the ground temperature and the deformation of the embankment are analyzed；and the relationship between the ground temperature and the deformation is presented. The observation data indicate：(1) the embankment transverse deformation difference has close relationships with the ground temperature transverse difference of the embankment，and it is controlled by the ground temperature state and its variation；(2) the difference of solar radiant amount on slopes results in transverse thermal difference in the embankment，and also leads to the transverse uneven settlement difference；and (3) the development of embankment deformation lags behind the development of embankment temperature，so the time of the largest settlement deformation is not equal to that of the maximum thaw depth. For the embankment with uneven deformation，the times of the largest settlement deformation on two sides of embankment are different；and the time of the largest settlement deformation on the south side is later than that on the north side of the embankment. The deformation difference will be aggravated with time；and finally the embankment stability is affected by longitudinal cracks of embankment caused by asymmetric settlement of permafrost.
丑亚玲，盛煜，韦振明. 多年冻土区公路路基阴阳坡温度及变形差异分析[J]. 岩石力学与工程学报, 2009, 28(09): 1896-1903.
CHOU Yaling1，SHENG Yu2，WEI Zhenming3. TEMPERATURE AND DEFORMATION DIFFERENCES BETWEEN SOUTHERN AND NORTHERN SLOPES OF HIGHWAY EMBANKMENT ON PERMAFROST. , 2009, 28(09): 1896-1903.
