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Computation of bearing capacity factor N-gamma-Prandtl's mechanism

DSpace at IIT Bombay

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Title Computation of bearing capacity factor N-gamma-Prandtl's mechanism
 
Creator DEWAIKAR, DM
MOHAPATRA, BG
 
Subject foundations
bearing capacity
limit equilibrium
passive thrust
point of application
pole of log spiral
shallow foundation (igc : e3)
 
Description In this paper, an analysis based on Prandtl's failure mechanism is proposed for the evaluation of bearing capacity factor, N-gamma, using the limit equilibrium approach, coupled with Kotter's equation. Except for shape of the failure surface, no other assumptions are needed in the analysis. A methodology based on Mitter's equation and force equilibrium conditions is developed to identify the correct location of pole of the log spiral and hence the unique failure surface. Using moment equilibrium condition, the point of application of passive thrust is determined. The proposed N-gamma values are compared with other available theoretical predictions and experimental results. They show a good agreement with some existing theoretical results and also show a better agreement with available experimental results. The analysis shows that pole of the log spiral lies at the footing edge for general shear failure conditions and the point of application of the passive thrust is strongly influenced by angle of soil internal friction.
 
Publisher JAPANESE GEOTECHNICAL SOC
 
Date 2011-08-04T08:59:09Z
2011-12-26T12:54:38Z
2011-12-27T05:42:46Z
2011-08-04T08:59:09Z
2011-12-26T12:54:38Z
2011-12-27T05:42:46Z
2003
 
Type Article
 
Identifier SOILS AND FOUNDATIONS, 43(3), 1-10
0038-0806
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9306
http://hdl.handle.net/10054/9306
 
Language en