Bearing capacity of two interfering strip footings from lower bound finite elements limit analysis
Article first published online: 14 OCT 2011
Copyright © 2011 John Wiley & Sons, Ltd.
International Journal for Numerical and Analytical Methods in Geomechanics
Volume 37, Issue 5, pages 441–452, 10 April 2013
How to Cite
Kumar, J. and Bhattacharya, P. (2013), Bearing capacity of two interfering strip footings from lower bound finite elements limit analysis. Int. J. Numer. Anal. Meth. Geomech., 37: 441–452. doi: 10.1002/nag.1104
- Issue published online: 14 MAR 2013
- Article first published online: 14 OCT 2011
- Manuscript Accepted: 3 SEP 2011
- Manuscript Revised: 23 APR 2011
- Manuscript Received: 11 SEP 2009
- bearing capacity;
- finite element method;
- limit analysis
A rigorous lower bound solution, with the usage of the finite elements limit analysis, has been obtained for finding the ultimate bearing capacity of two interfering strip footings placed on a sandy medium. Smooth as well as rough footing–soil interfaces are considered in the analysis. The failure load for an interfering footing becomes always greater than that for a single isolated footing. The effect of the interference on the failure load (i) for rough footings becomes greater than that for smooth footings, (ii) increases with an increase in ϕ, and (iii) becomes almost negligible beyond S/B > 3. Compared with various theoretical and experimental results reported in literature, the present analysis generally provides the lowest magnitude of the collapse load. Copyright © 2011 John Wiley & Sons, Ltd.