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논문 기본 정보

자료유형
학술저널
저자정보
Seboong Oh (영남대학교)
저널정보
대한토목학회 KSCE JOURNAL OF CIVIL ENGINEERING KSCE JOURNAL OF CIVIL ENGINEERING Vol.11 No.1
발행연도
2007.1
수록면
7 - 16 (10page)

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An elasto-plastic constitutive model based on an anisotropic hardening rule was proposed to model the stress-strain behavior from small to large strains. The anisotropic hardening rule was based on the generalization of isotropic hardening rule and included a simple hardening function with respect to a unique internal variable. However plasticity in reverse loading condition could be modeled by discrete formation of homology center. On weathered soils, two series of tests were performed: one is the undisturbed specimens at natural water content using resonant column, torsional shear and triaxial tests and the other is the reconstituted saturated specimens tested using triaxial tests under drained and undrained conditions. In addition undrained triaxial tests were performed for clays with various overconsolidation conditions. The proposed model calculated the stress-strain relationship and the secant modulus and they match reasonably with the measured ones in overall strain ranges.

목차

Abstract
1. Introduction
2. Anisotropic Hardening Constitutive Model
3. Undisturbed Weathered Soils Under Natural Water Content
4. Remolded Weathered Soils Under Saturated Conditions
5. Undrained Behavior of Clays
6. Conclusions
Acknowledgement
References
Appendix. Hardening Functions

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