Kumar, Jyant (2009) The variation of N-gamma with footing roughness using the method of characteristics. In: International Journal for Numerical and Analytical Methods in Geomechanics, 33 (2). pp. 275-284.
5.pdf - Published Version
Restricted to Registered users only
Download (172Kb) | Request a copy
By using the method of characteristics, the effect of footing-soil interface friction angle (delta) on the bearing capacity factor N-gamma was computed for a strip footing. The analysis was performed by employing a curved trapped wedge under the footing base; this wedge joins the footing base at a distance B-t from the footing edge. For a given footing width (B), the value of B-t increases continuously with a decrease in delta. For delta = 0, no trapped wedge exists below the footing base, that is, B-t/B = 0.5. On the contrary, with delta = phi, the point of emergence of the trapped wedge approaches toward the footing edge with an increase in phi. The magnitude of N-gamma increases substantially with an increase in delta/phi. The maximum depth of the plastic zone becomes higher for greater values of delta/phi. The results from the present analysis were found to compare well with those reported in the literature.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to John Wiley & Sons.|
|Keywords:||bearing capacity;failure;foundations;numerical modeling and analysis;plasticity.|
|Department/Centre:||Division of Mechanical Sciences > Civil Engineering|
|Date Deposited:||24 Mar 2009 09:38|
|Last Modified:||19 Sep 2010 05:27|
Actions (login required)