Numerical modeling of floating geosynthetic-encased stone column–supported embankments with basal reinforcement.
- Resource Type
- Article
- Authors
- Zhang, Xu; Yoo, Chungsik; Chen, Jian-Feng; Gu, Zi-Ang
- Source
- Geotextiles & Geomembranes. Aug2022, Vol. 50 Issue 4, p720-736. 17p.
- Subject
- Language
- ISSN
- 0266-1144
The performance of the floating geosynthetic-encased stone column–(GESC)-supported embankments with basal reinforcement was examined using a 3-dimensional (3D) hydro-mechanical coupling finite element model. Comprehensive parametric analyses were performed on the governing factors such as consistency of substratum soil, tensile stiffness of basal reinforcement and encasement, and embankment height. The results indicated that a higher embankment load is transferred to the surrounding soil when a GESC was constructed on a weaker substratum. This causes larger increases in the settlement and lateral displacement of the GESC on the weaker substratum. The tensile strain of the basal reinforcement and hoop strain in the encasement also increases. In addition, high tensile stiffness in basal reinforcement and encasement is necessary to ensure feasible settlement reduction in a floating GESC-supported embankment with basal reinforcement. • 3D numerical modeling was performed to evaluate the behavior of floating GESC-supported embankment. • The hardening soil model was used to model the behavior of the soft clay soil. • Larger increases in the settlement and lateral displacement of the GESC on the weaker substratum. • High tensile stiffness in basal reinforcement and encasement is necessary to ensure feasible settlement reduction. [ABSTRACT FROM AUTHOR]