Determined of Equivalent Fixed Depth in the 3D Frame

The paper presents the results of solving the problem of identifying the equivalent depth of the linkage of the frame -pile structural system. The computational model of the problem is a frame -pile structural system in the form of three-dimensional frame, linear elastic deformation, pile -soil link is replaced by a hard restraint (fixed) with equivalent restraint depth. The problem is solved by the method of penalty function to combine with the finite element method. Examples of numerical calculations show that models, algorithms and calculation programs can be trusted and acceptable. © Published under licence by IOP Publishing Ltd.