ABSTRACT
In this paper, the results of case studies in predicting deformation behavior of Bangkok (BKK) clay underneath a test embankment and in the course of deep excavation work are reported. Prior to performing elasto-plastic FE analysis by using a modified Cam clay model (MCC), the required engineering properties were all obtained from in-situ and laboratory tests, including the variation of clay stiffness with depth and with strain. Coupled consolidation analysis for embankment loading and short-term undrained analysis for the excavation work were carried out. The effects of the elastic deformation moduli, drainage boundary conditions (one-way and two-way drainage) and coefficient of permeability were each examined on the deformation behavior of Bangkok clay. Recommendations are made for the appropriate values of elastic Young’s modulus and permeability in analyzing the deformation behavior of Bangkok clay.
