Conference Proceedings

Eighth International Conference on Advances in Civil, Structural and Mechanical Engineering CSM

Behavior of Eccentric Vertical Loaded Circular Footing on Sand Layer of Limited Thickness using Finite Element

Author(s) : Barada Prasad Sethy, Chittaranjan Patra

Abstract

Numerical study has been carried out to determine the ultimate bearing capacity of circular footing on a sand layer of limited thickness underlain by a rigid rough base subjected to an eccentric vertical load. The sand layer for the numerical study was prepared at a relative density (Dr) of 69% using five different thicknesses, H. FE model was performed at H/B values of 0.3, 0.5, 1, 2, and 3 (B = diameter of footing). The load eccentricity ratio e/B varied from 0 to 0.15. The analysis was performed using an elasto-plastic hyperbolic model called the hardening soil (HS) model. Effect of the depth of rough rigid base and load eccentricity on bearing capacity was studied under eccentric vertical loading. Further, the failure mechanism under eccentric vertical loading has been studied. Numerical modeling results indicate that the bearing capacity and the depth of failure surface get modified when the rigid rough base is located at a shallow depth (H/B smaller than H/Bcr) from the base of the foundation. The bearing capacity values obtained from the FE analysis are compared with the laboratory model test results.

Conference Title : Eighth International Conference on Advances in Civil, Structural and Mechanical Engineering CSM
Conference Date(s) : 23-24, April 2019
Place : Birmingham City University, Birmingham, United Kingdom
No fo Author(s) : 2
DOI : 10.15224/978-1-63248-170-2-15
Page(s) : 84 - 89
Electronic ISBN : 978-1-63248-170-2
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