1. Stiffness and strength parameters for hardening soil model of soft and stiff Bangkok clays
- Author
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Surarak, Chanaton, Likitlersuang, Suched, Wanatowski, Dariusz, Balasubramaniam, Arumugam, Oh, Erwin, and Guan, Hong
- Subjects
STIFFNESS (Mechanics) ,SOIL mechanics ,MECHANICAL loads ,OEDOMETERS (Soil mechanics) ,FINITE element method - Abstract
Abstract: A comprehensive set of experimental data on Bangkok subsoils from oedometer and triaxial tests are analysed in this paper in order to determine the stiffness and strength parameters for Hardening Soil Model. The parameters determined are the Mohr–Coulomb effective stress strength parameters together with the stiffness parameters; tangent stiffness for primary oedometer loading, secant stiffness in undrained and drained triaxial tests, unloading/reloading stiffness and the power for stress level dependency of stiffness. The oedometer data are obtained from three different Bangkok soil layers: soft clay at 6–8m depths; medium clay at 12–14m depths; and stiff clay at 15.5–18m depths. The triaxial tests data are carried out for soft and stiff clays at depths of 5.5–6m and of 16–18m under both undrained and drained conditions, respectively. Finally, two sets of parameters for soft and stiff Bangkok clays are numerically calibrated against undrained and drained triaxial results using PLAXIS finite element software. [Copyright &y& Elsevier]
- Published
- 2012
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