The influence of load inclination on the undrained bearing capacity of strip footings on slopes

The effect of inclined loading on the bearing capacity of foundations on horizontal ground surface is well established and both the exact solution and simpler empirical equations are available for the calculation of the failure loads. However, for footings on or near slopes complete solutions are available only for vertical loading. This paper investigates the influence of inclined loading on the horizontal and vertical failure loads. The finite element, upper bound plasticity and stress field methods are used to examine a wide range of geometries and soil properties. The methods are first validated against known solutions for two special cases and are subsequently employed to investigate the effect of the geometrical and material properties on the failure loads and the bearing capacity load interaction diagram. Based on this investigation an empirical equation is proposed for the load interaction diagram for undrained inclined loading of footings on or near slopes.

[1]  Osamu Kusakabe,et al.  BEARING CAPACITY OF SLOPES UNDER STRIP LOADS ON THE TOP SURFACES , 1981 .

[2]  Hai‐Sui Yu,et al.  Limit Analysis versus Limit Equilibrium for Slope Stability , 1999 .

[3]  A. P. Green.  The plastic yielding of metal junctions due to combined shear and pressure , 1954 .

[4]  Mohsen M. Baligh,et al.  Loaded Areas on Cohesive Slopes , 1983 .

[5]  Andrew J. Whittle,et al.  Undrained Limit Analyses for Combined Loading of Strip Footings on Clay , 1998 .

[6]  Konstantinos Georgiadis,et al.  Undrained Bearing Capacity of Strip Footings on Slopes , 2010 .

[7]  Susan Gourvenec,et al.  Shape effects on the capacity of rectangular footings under general loading , 2007 .

[8]  George Geoffrey Meyerhof,et al.  Some recent research on the bearing capacity of foundations , 1963 .

[9]  John P. Carter,et al.  Bearing capacity of strip and circular foundations on undrained clay subjected to eccentric loads , 2002 .

[10]  Lidija Zdravković,et al.  Load carrying capacity of foundations , 2004 .

[11]  Radoslaw L. Michalowski,et al.  THREE-DIMENSIONAL ANALYSIS OF LOCALLY LOADED SLOPES , 1989 .

[12]  Kunitomo Narita,et al.  BEARING CAPACITY ANALYSIS OF FOUDATIONS ON SLOPES BY USE OF LOG-SPIRAL SLIDING SURFACES , 1990 .

[13]  Alexander M. Puzrin,et al.  The bearing capacity of a strip footing on clay under combined loading , 1999, Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences.

[14]  J. B. Hansen,et al.  A general formula for bearing capacity , 1961 .

[15]  Mark Randolph,et al.  Combined loading of skirted foundations , 1998 .

[16]  Wai-Fah Chen,et al.  Bearing Capacity of Shallow Foundations , 1991 .

[17]  Donald W. Taylor,et al.  Fundamentals of soil mechanics , 1948 .

[18]  edited by Hans F. Winterkorn Hsai-Yang Fang.  Foundation Engineering Handbook , 2017 .

[19]  P. de Buhan,et al.  THREE DIMENSIONAL BEARING CAPACITY ANALYSIS OF A FOUNDATION NEAR A SLOPE , 1998 .