| As the soil stress-strain relationship is revealed in mechanical properties of soilcritical law, and turfy soil is widely distributed, and compared to other ordinary clay isa kind of special nature of the soil, and has great influence on stability of that thefacility built on it. Therefore, the turfy soil stress-strain relationship that is particularimportant. As Duncan-Chang constitutive model well reflect the objective laws ofsoil deformation, and model parameters are easily to obtained from conventionaltriaxial experiments and are widely used in engineering practice, thus combiningDuncan-Chang model with turfy soil stress-strain relationship exploration.In this paper, through sampling the turfy soil that under the test section roadbedof Heda highway located in the town of Jiang Yuan, and experiment on each layer forthe related physical properties, select representative turfy soil to CD tests. By Duncan-Chang E-μ model analysis to determine the conditions for the establishment ofmodel and parameter selection. Combined with the experimental data with Duncan-Chang principle principals, and made suitable mechanical properties of turfy soilmainly in Dunhua Jiang Yuan town stress-strain relationship. And obtained eightparameters in the model, and obtained the elastic modulus and poisson ratio.In this paper, exploration and research turfy soil constitutive relationship hassome theoretical and practical significance, Research on turfy soil subgradeconstitutive knowledge and understanding of seasonal frozen turfy soil subgradesituation analysis is of great significance, this paper only study on turfy soil that fromDunhua Jiang Yuan town constitutive models for initial exploration, I hope you cangive your guidance on worthy discussions and the mistakes.This paper is supported by National Natural Science Foundation of China （40772169）“The time effect reach of seasonal frozen turfy soil”and（41172235）“The structural properties and constitutive relation of seasonal frozen turfy soil”... |
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