Study on deformation characters of reinforced embankment in permafrost regions of Qinghai-Tibet Railway

Two kinds of programs for reinforced embankment and non-reinforced embankment were designed in some test section along the Qinghai-Tibet Railway.Based on the overall monitoring of the settlement,level displacement and ground temperature for both reinforced embankment and non-reinforced embankment,the characteristic of deformation and the variation of ground temperature of reinforced embankment were analyzed.It was shown that the deformation of reinforced embankment with geogrids is more uniform than that of non-reinforced embankment.And the ability of resistance to longitudinal crack was greatly increased as a result of enhancement of deformation coordination ability.