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http://dx.doi.org/10.14481/jkges.2015.16.10.5

Reproduction of Cyclic Triaxial Behavior of Unsaturated Soil using Element Simulation  

Lee, Chungwon (National Civil Defense and Disaster Management Training Institute, Ministry of Public Safety and Security)
Publication Information
Journal of the Korean GEO-environmental Society / v.16, no.10, 2015 , pp. 5-14 More about this Journal
Abstract
Suction affects the unsaturated soil as the negative pore pressure, and leads to increases of the yield stress and the plastic shear stiffness of the soil skeleton due to the growth in interparticle stress. Hence, in this study, in order to account for these effects of suction under the dynamic loading condition such as the earthquake, the element simulation of the cyclic triaxial test using induced stress-strain relation based on cyclic elasto-plastic constitutive model extended for unsaturated soil considering the $1^{st}$ and the $2^{nd}$ yield functions was conducted. Through the stress path, stress-strain relation and relation between volumetric strain and axial strain, it was seen in all the cases that the simulation results demonstrated a good agreement with the experimental results. It is expected that the results of this study possibly contribute to the accuracy improvement on the prediction of unsaturated soil behavior under the dynamic loading condition.
Keywords
Unsaturated soil; Dynamic loading; Suction; Cyclic elasto-plastic constitutive model; Element simulation; Stress-strain relation;
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Times Cited By KSCI : 1  (Citation Analysis)
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