ULTIMATE BEARING CAPACITY OF FOOTING ON SANDY SOIL AGAINST COMBINED LOAD OF VERTICAL, HORIZONTAL AND MOMENT LOADS

Abstract

Rigid plastic finite element method employing the rigid plastic constitutive equation, which
considers non-linear shear strength properties against confining pressure, is used for the assessment of
ultimate bearing capacity of footing on sandy soils against the combined load of vertical, horizontal and
moment loads. The numerical results were compared with the results predicted by semi-empirical bearing
capacity formulate of Architectural Institute of Japan and others. The comparison is conducted in terms of
vertical and horizontal loads plane and vertical and moment loads plane. The limit load is expressed in
normalization form by the limit vertical load, Vo. Results show that the normalized vertical load decreases
with the increase in the normalized horizontal load and/or moment load. Effect of non-linear shear strength
on the normalized limit load space in vertical, horizontal and moment loads is clearly indicated. The
normalized horizontal load is obtained greater than that of linear shear strength property.