| Title |
Characteristics of Soil Parameter for Lade"s Single Work-Hardening Constitutive Model with Relative Density of Baekma River Sands |
| Keywords |
single work-hardening constitutive model;soil parameter;relative density;drained traxial test;단일항복면 구성모델;토질매개변수;상대밀도;배수삼축시험 |
| Abstract |
This study was performed a series of the isotropic compression-expansion tests and the drained triaxial tests with various the relative densities 25%, 50%, 80% and 100% for Baekma river sand. Using the tests results the characteristic of the parameters of Lade"s single hardening constitutive model were investigated. The soil parameters Kur and n representing elastic behavior are not much affected by the change of the relative density. The other parameters such as failure criterion (m, ŋ₁), hardening function (C, p) and plastic potential (ψ₂, μ) are in a positive linear relationship with the relative density. Since the soil parameters h and a representing yield function do not change much to the change of relative density and also closely related to failure criterion, they can be replaced by failure criterion ŋ₁. We also observed that predicted values from the Lade"s single hardening constitutive model were well consistent with the observed data. |