Simulation der Boden-Bauwerk-Interaktion unter Berücksichtigung eines elastisch-plastischen Materialverhaltens des Baugrundes

Simulation of soil-structure-interaction with consideration of elastic-plastic soil behaviour.

This article presents a new method for the calculation of elastic-plastic building ground deformations and failure including dynamic effects, like wave propagation. The presented procedure is a hybrid method, based on several common calculation methods. Included is the nonlinear calculation with the finite element method (FEM), a nonlinear HHT-α method and the scaled boundary finite element method (SBFEM). Focuses are the implementation of an elastic-plastic soil model with isotropic hardening, the derivation and implementation of a nonlinear HHT-α method with full Newton-Raphson iteration, and the implementation of these methods and the SBFEM in a nonlinear overall calculation scheme. The applicability of the developed method is given in several examples in different complexity. The examples are related to shallow foundations. But the method is also portable to pile foundations, building pits or earthquake calculations.