ABSTRACT
Socketed shafts are usually designed and constructed as foundations of high-rise buildings and bridge structures when layers of loose soil overlie bedrock. The behavior of socketed shafts in rock has a lot in common with the large diameter piles in soil. However, the structure of a rock mass and their highly variable mechanical characteristics considerably complicate the calculation of the socketed shaft bearing capacity and settlement in rocks.
The factor, significantly affecting the interaction of socketed shafts with rock mass—the mechanical properties of the sidewall interface, is analyzed in this article as well as some peculiarities of calculations of settlements of socketed shafts in rock under the action of vertical loading. The major factors, affecting the bearing capacity of socketed shafts under loads, are associated with composition, structure and mechanical properties of rock mass. The results of the study of the effect of sidewall interface of socketed shafts in conditions of elasto-plastic problem are presented to assess the tangential stiffness influence on the behavior of the socketed shaft, in particular, on its settlements.
