Based on the ground temperature and deformation of the embankment with thawed interlayer at the monitoring sections of P32 and P33 along Qinghai-Tibet railway from 2005 to 2015

artificial permafrost table

maximum seasonal frozen depth

thickness of thawed interlayer and annual process of the ground temperature nearby artificial permafrost table are analyzed. Meantime

annual process of the total settlement of left and right shoulder at P32 and P33 sections

the effect of ground temperature at the left shoulder on deformation at P32 section and the effect of ground temperature difference at the left and right shoulder on its difference of settlement at P33 section are investigated. The results indicate that: at P32 and P33 sections

artificial permafrost table of left shoulder descended annually

maximum seasonal frozen depth remained nearly constant

thickness of the thawed interlayer thickened and the ground temperature nearby artificial permafrost table increased annually; during the monitoring period

the left and right shoulder deformation all performed mainly settlement and its magnitude at P32 section was smaller than at P33 section. Moreover

at P32 section

left shoulder settled during warm season and frost heave occurred slightly during cold season. The occurrence of settlement and frost heave lagged the variation of the ground temperature. The temperature difference can lead to differential settlement under left and right shoulder at the monitoring section of P33

and its value increased annually.