This analysis program couples nonlinear structural finite element analysis with nonlinear static soil models for axial, lateral and torsional soil behavior to provide a robust system of analysis for coupled bridge pier structures and foundation systems. FB Pier performs the generation of the finite element model internally given the geometric definition of the structure and foundation system as input graphically by the designer. This allows the engineer to work directly with the design parameters and lessens the bookkeeping necessary to create and interpret a model. The program considers prestressed and steel girder, reinforced concrete T-beam, and flat slab bridges. The current version uses text based, question prompts in order to develop an input file.
System consists of four programs.
The Preprocessor rapidly models bridge structures and loading conditions. The Finite element analysis engine computes structural response. The Graphical post-processor displays analysis results graphically. Currently, a new user interface for the generator is being written. This will improve the ability of the engineer to create models.