The Bearing Capacity of Strip Footings from the Standpoint of Plasticity Theory.

摘要

Solutions,by the theory for a perfectly plastic material with a non-associated flow rule,are presented over the full range from the limiting case of no body forces (the Prandtl solution) to the limiting case for no surcharge. It is shown that in between these limiting cases the principle of superposition implied in the ordinary concept of bearing capacity coefficients (N sub q) and (N sub gamma) is approximately true,the error being no more than a maximum of 30%. The results confirm previous solutions by Sokolovsky and by Cox for smooth footings and also show that for such footings the nature of the flow rule of the material has no influence at all on the collapse load. (Author)