The Ultimate Bearing Capacity of Foudations

TLDR: In this article, a theory of bearing capacity is developed, on the basis of plastic theory, by extending the previous analysis for surface footings to shallow and deep foundations in a uniform cohesive material with fntemal friction.

Abstract: Synopsis In the first part of the article a theory of bearing capacity is developed, on the basis of plastic theory, by extending the previous analysis for surface footings to shallow and deep foundations in a uniform cohesive material with fntemal friction. The theoretical results are represented by bearing capacity factors in terms of the mechanical properties of the soil, and the physical characteristics of the foundation. The base resistance of foundations in purely cohesive material is found to increase only slightly with foundation depth; for deep foundations the skin friction is, therefore, large compared with the base resistance. In cohesionless material, however, the base resistance increases rapidly with foundation depth and depends to a considerable extent on the earth pressure coefficient on the shaft; for deep foundations the base resistance is the predominant feature and the shin friction is relatively small. In the second part of the article the main results of laboratory and field loading ...