Bearing Capacity of Circular Foundations on Weak Cohesive Soils Reinforced with Stone Columns

Kumar, Prof and Mukherjee, S and Pallepati, RR (2022) Bearing Capacity of Circular Foundations on Weak Cohesive Soils Reinforced with Stone Columns. In: International Journal of Geomechanics, 22 (11).

PDF Int_Jou_Geo_22-11_2022.pdf - Published Version Restricted to Registered users only Download (2MB) | Request a copy

Abstract

Vertical stone columns have been employed to improve the bearing capacity of the foundations for circular oil storage tanks placed on weak clayey strata. A solid stone column was placed along the axis of the foundation along with (1) two annular rings of stone columns for a 10-m-diameter tank, and (2) four annular rings of stone columns for a 20-m-diameter tank. The tank was first placed on a thin granular pad before transferring the load to the underlying weak clayey stratum reinforced with stone columns. The bearing capacity, with and without vertical stone columns, has been determined by employing an axisymmetric finite-element limit analysis. The Mohr-Coulomb yield criterion was used for the granular pad as well as stone column materials, and the Tresca yield criterion was employed for the purely cohesive clayey stratum. The results from the analysis were compared with that reported in the literature. The employment of stone columns leads to a significant increase in the bearing capacity of the foundations on soft clay. © 2022 American Society of Civil Engineers.

Item Type:	Journal Article
Publication:	International Journal of Geomechanics
Publisher:	American Society of Civil Engineers (ASCE)
Additional Information:	The copyright for this article belongs to American Society of Civil Engineers (ASCE).
Keywords:	Failure (mechanical); Finite element method; Foundations; Reinforcement, Annular rings; Axisymmetric finite elements; Circular foundations; Cohesive soils; Column materials; Finite element limit analysis; Mohr Coulomb yield criterion; Oil storage tank; Soft clays; Stone column, Bearing capacity, bearing capacity; cohesive soil; column; failure mechanism; finite element method; foundation; soft clay; soil-structure interaction
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	05 Oct 2022 04:47
Last Modified:	05 Oct 2022 04:47
URI:	https://eprints.iisc.ac.in/id/eprint/77017

Actions (login required)

View Item