Comparisons of Overstress Theory with an Empirical Model in Creep Prrediction for Cohesive Soils

다국어 초록 (Multilingual Abstract)

In this study, the creep behavior for cohesive soils was predicted using a recently developed empirical function and a generaloverstress theory. The model based on overstress theory was slightly modified for application and obvious comparison. Thepredictions were compared and investigated with the experimental results. Both models could not predict the undrained creep rupturebut they provided general agreement with the experimental results until the elapsed time when creep rupture occurred. The empiricalmodel deserves further research with keeping its advantages of simple mathematical formation and few parameters.

참고문헌 (Reference)

1 ".“Constitutive modeling of geomaterials.” Journal of EngineeringMechanics" no. 6 : 621-, 2004

2 ". “Time-dependent behavior ofundrained clay" no. gt 7 : 693-709, 1977

3 ". “The propagation of longitudinal waves of plasticdeformation in a bar of metal exhibiting a strain rate effect.” Journalof Applied Mechanics" 18 : 203-208, 1951

4 ". “Stressstrain-strain rate relation for the compressibility of sensitive naturalclays.” Geotechnique" 35 : 159-180, 1985

5 ". “Non-linear creep of soils in oedometer tests.”Geotechnique" no. 5 : 699-707, 1999

6 ". “General stress-strain-time functionfor soils.” Journal of Soil Mechs and Foundations" no. 1 : 21-46, 1968

7 ". “Fundamental problems in viscoplasticity.”Advances in Applied Mechanics" 9 : 243-377, 1966

8 ". “Evaluation of viscoplastic cap model.” Journalof Geotechnical Engineering" no. 8 : 1106-1125, 1984

9 ". “Equivalent times and elastic viscoplasticmodelling of time-dependent stress-strain behavior of clays.”Canadian Geotechnical Journal" 31 : 42-52, 1994

10 ". “Characterizationof models for time-dependent behavior of soils.”" Liingaard 4 : 157-177, 2004

11 ". Fundamentals of Soil Behavior. 2nd ed." new york : 1993

12 ". Finite Element Analysis of the Time-dependentBehavior of Soft Clays" stanford uni : 1984

13 ". An Anisotropic Critical State Clay PlasticityModel. Constitutive Laws for Engineering Materials" Elsevier Science Publishing Co. Inc. 513-521, 1987

14 ". A Time-dependent Constitutive Model forCohesive Soils" of california at berkeley : 1981