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JOURNAL OF FACULTY OF CIVIL ENGINEERING
INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVILENGINEERING 25, 2014.y., pp. 1033-1041


CONTACT STRESSES BELOW FOOTING WHEN LOADED POINT LIES OUTSIDE THE KERN
 
DOI: 10.14415/konferencijaGFS2014.137
UDC: 624.151:624.042
CC-BY-SA 4.0 license
Author : Samardžija, Ilija; Santrač, Petar
 
 Summary:
 Tall objects such as industrial chimneys, radio masts and towers, wind turbines and the like, have relatively small weight compared to the horizontal forces generated by the wind and seismicity. In the foundation of these objects, resultant force acting on the footing, calculated for most unfavourable load combination, is no longer within the kern of the footing. Using the flexural formula for obtaining the bearing pressure, tensile stress occurs in the contact surface, which is not physically possible. This paper presents semi-iterative method for excluding the tensile stress in the contact surface, which gives the correct bearing pressure diagram that can be used for the calculation of cross-section stresses and settlement of the footing.
 
 Keywords:
 Eccentrically loaded footing, kern, bearing pressure