Study On The Seasonal Frost Region Of Frost In Railway Subgrad Of Beijing-Harbin From ShangHaiGuang To SiPing

Based on of predecessor,Frost of seasonal region in railwaybed is analysised and studied,The highway reconstruction project of the Beijing—Harbin line,which from ShanHaiGuang to SiPing is taked as engineering background.It through the formation of the seasonal frozen soil freezing injury factors for paper, carrys out the study from the temperature field to determine the freezing depth and freezing depth of factors,which according to the relationship between land surface temperature and the soil temperature based on the introduction of the concept of land surface temperature.Second, the introduction of several water transfer theory explain the occurrence of water in soil, which describes the process of moisture migration in freezing effect on the classification of seasonal freezing, the formation of factors, performance characteristics, determine the freezing of the remediation measures.Finally, with the railway embankment detection radar experiment report, on the thickness of ballast and roadbed construction thickness, subgrade defects detection of the base bed morphology analysis, subgrade surface deformation analysis, settlement analysis, ballast pollution analysis, ballast and bedding with water analysis, based bed load capacity and fill its properties.Research results on this subject to determine the type of freezing injury disease, determine the method of freezing damage remediation, integrated circuits to enhance quality, increase train speed, the seasonal frozen soil area on-site remediation and design of a reference.