Abstract：The observation data of ground temperature and embankment deformation in the permafrost regions on the Qinghai—Tibet Plateau show that most of artificial permafrost tables under the embankment decline gradually and the ground temperatures of permafrost under the embankment rise universally due to the effects of global warming and human activities. Thus，most of highway diseases induced by thaw settlement come into being. Based on the observation data of ground temperature and embankment deformation at Tangnan of Qinghai—Tibet highway and those at section K369 of Qingkang highway，the rules of transverse uneven and even deformations of embankments are summarized. The ground temperature and embankment deformation characters are analyzed；and the relationship and interaction between ground temperature and embankment deformation are presented. The observation results show that the embankment stability in the permafrost regions depends on the changes of ground temperature and ice content of permafrost under embankment，and the ground temperature status closely relates with the embankment deformation. As for the transverse uneven deformation embankment，the asymmetrical thermal regime results in the enormous difference of the artificial permafrost tables under north and south slopes；and the asymmetrical frozen and thawing state of embankment soil result in the transverse uneven deformation of the embankment eventually. The transverse uneven deformation embankment in degenerative permafrost regions results in great differential deformation between left and right embankment shoulders，which induces the longitudinal cracking disease. As for the transverse even deformation embankment in degenerative permafrost regions，there are little differential deformations between left and right embankment shoulders，thus the embankment deformation has few effects on the stability of embankment and pavement. Due to the engineering geological differences along highway，the undee deformation or local settlement will come into being in the transverse even deformation embankment.
[J]. 岩石力学与工程学报, 2009, 28(07): 1477-1483.
WEN Zhi1，S. GROUND TEMPERATURE AND DEFORMATION LAWS OF HIGHWAY EMBANKMENTS IN DEGENERATIVE PERMAFROST REGIONS . , 2009, 28(07): 1477-1483.
