Hybrid Models for Efficiently Analysing Overall and Local Stability Problems inthe Bridge Design Process

摘要

This contribution presents a novel approach for bridge design analyses. The full 3D design analysisis based on a hybrid model combining advantages of the classical beam theory and the FiniteElement Method. With defining few additional parameters, the deformability of the cross-sectioncan be taken into account by using Finite Element techniques up to any required level of accuracy.Instead of presenting FE results - like stresses in Gauss points – this novel approach providesintegral "beam-like" results for each segment face. The user can freely choose the number ofintegral result. This allows for applying standard design check routines in the post-processing phasein accordance with current design codes, which are usually based on "beam" results.