| 강모래의 응력경로에 따른 단일항복면 구성모델의 토질매개변수 특성 |
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이종천, 조원범 |
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| Characteristics of River Sand Soil Parameter for Single Work-Hardening Constitutive Model to Stress Path |
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Jong-Cheon Lee, Won-Beom Cho |
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| Abstract |
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The stress-strain relationship of soil is dependent on a number of factors such as soil type, density, stress level and stress path. Th accurate stress-stain relationship can be predict using a constitutive model incorporated all influencing factors. In this study, an isotropic compression-expansion test and a series of drained conventional triaxial tests with several stress paths were performed on Baekma river sand to investigate parameters characteristics of Lade's single work hardening model depending on the stress path. Based on test results, the parameters of yield function (h, α) are not much influenced by stress level and stress path, the these parameters do affect a little bit of stress-strain behavior. The parameters h and α are closely related to failure criterion η₁, they can be replaced by failure criterion parament. We also observed that predicted values from the Lade’s single hardening constitutive model are well matched with the observed data. |
| Key Words:
Single Work-Hardening Constitutive Model;Soil Parameter;Stress Path;CD test;Istropic test |
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