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FB-MultiPier is a nonlinear finite element analysis program capable of analyzing multiple bridge pier structures interconnected by bridge spans. The full structure can be subject to a full array of AASHTO load types in a static analysis or time varying load functions in a dynamic analysis. Each pier structure is composed of pier columns and a cap. This structure is supported on a pile cap and piles/shafts with nonlinear soil. 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-MultiPier 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. As is a necessity for design-oriented applications, FB-MultiPier automatically generates finite element models given a parametric, geometric definition of the structure and foundation system. Both input and analysis results are handled through a streamlined combination of form-based, 2D graphics, and 3D graphics windows.

For more information about FB-MultiPier, click here.

FB-Deep is a static axial capacity program used for drilled shafts and driven piles. The drilled shaft methodology is based upon Federal Highway Administration reports. Driven pile methodology utilizes two types of analyses: SPT and CPT. SPT methodology is based on empirical correlations between cone penetrometer tests and standard penetration tests for typical Florida soil types. Unit end bearing resistance and unit skin friction resistance versus SPT N values are given in the FDOT research bulletin RB-121, for the different soil types. Driven pile capacity calculated using CPT data can be determined by three separate methods. The first method is the Schmertmann method proposed by Schmertmann in 1978 (AASHTO LRFD Bridge Design Manual). The second method is the LCPC method proposed by Bustamante and Gianeselli for the French Highway Department in 1982. The third method is the UF method proposed by Bloomquist, McVay and Hu for the FDOT in 2007.

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Atlas is an analysis and design program used for signal lights and signs supported by the dual cable system. The analysis consists of an iterative technique which is a combination of the Force Density Method (FDM) and the Direct Stiffness Method (DSM). The FDM is ideal for the analysis of cable structures whereas the DSM is the most widely used technique for the analysis of framed structures. The nature of the structures under consideration lead to the development of this analysis technique, which is a combination of the two methods. Atlas handles the wind loading in a realistic manner. It allows the user to specify the wind speed as well as the areas of the signal lights or signs (parallel to the X and Y axis). In so doing, the program calculates the applied loads on the corresponding nodal points internally, based on the specified element areas of the Light elements in each plane. The loads are calculated in each cycle of the nonlinear process. Therefore, the applied loads in each cycle change with the rotation angle of the light. Atlas is also in compliance with the latest FDOT Design Standard Index. Engineers can place multiple poles at locations of interest to design multiple-span signal systems, including the Box configuration.

For more information about Atlas, click here.