longitudinal embankment
1.Its stability is destroyed with longitudinal cracks of embankment caused by asymmetric settlement of permafrost.
2.Using the FEM program with Duncan nonlinear elastic model,this paper analyses the behaviours of stability and settlement of embankment in mountainous land with different treatment regions and filling rates,and finally,the auther analyses the settlement behaviours of three embankment in longitudinal and transverse direction.
3.Results showed that the temperature distribution of the traditional embankment was asymmetrical; the asymmetrical status was changed after ripped-rock revetment was installed and the soil under the ripped-rock was cooled obviously; the ripped-rock revetment could cool embankment and adjust the temperature difference between the north-facing slope and the south-facing slope; the ripped-rock revetment was an available technique to protect embankment from thawing settlement and longitudinal cracks in permafrost regions.
4.Focusing on engineering disease of embankment longitudinal cracks,the paper illustrates the testing characteristics of expansive adamic earth and the causes of engineering disease by using this material for subgrade filling,also it brings forwards the treatment measures accordingly.
