Research on modified constitutive model of Shenyang circular-gravel based on disturbed state
CHEN Chen
Abstract：The triaxial consolidation drained shear tests were done on the circular-gravel in Shenyang region under different confining pressure. Based on the theory of DSC,the general disturbance function which can i-dentify the influence of both the advantage disturbance and the disadvantage disturbance is established. Dr is used as a parameter of disturbance. Combine with the results of triaxial tests,the non-linear plastic constitutive model focused on the circular-gravel is obtained. The disturbance function is introduced into the traditional Duncan-Chang model. Meanwhile,the calculation curves by the modified model are analyzed comparing with the test curves. The results show that the modified model is better in considering the influence of disturbance comparing with the traditional models. The new model can make a better description of the strength and the de-formation characteristics of the coarse-grained sand in Shenyang area.
Keywords：circular-gravelgeneral disturbance functionrelative densitytriaxial testsmodified D-C model
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 125-131 )