Structural Analysis of Bridges in RFEM and RSTAB

Design of Reinforced and Prestressed Concrete, Steel, and Timber

21 December 2016

Many users rely on RFEM and RSTAB when analyzing and designing bridges consisting of steel, reinforced concrete, timber, or other materials.

In RFEM/RSTAB, you can combine load automatically in accordance with the standard EN 1990 + EN 1991‑2 (Road bridges).

The helpful add-on modules allow you to generate influence lines, moving loads on members and surfaces, and other options. Dynamic analysis is also possible as well as required designs of stability, buckling, and fatigue.

Load Generation and Dynamic Analysis

By using the RF‑INFLUENCE add-on module for RFEM, you can easily create influence lines and surfaces due to a constant internal force such as axial force, shear force, or bending moment. Influence lines and surfaces express graphically how a unit load affects the internal reactions on any possible load position of the model.

Furthermore, there are useful add-on modules available for RFEM/RSTAB, which allow you to create load cases on the basis of various positions of moving loads such as vehicles on bridges. These load cases can be automatically superimposed in result combinations in order to determine the most unfavorable load position.

The RF-/DYNAM Pro add‑on modules can be used to perform analysis of natural frequencies for bridges. Moreover, you can link various excitation functions with loads by using time history analysis (for example excitations due to wind or vehicle crossing).

Design According to International Standards

For the analysis and design of steel members, there are currently 13 international standards available in RFEM/RSTAB. These are, for example, Eurocode and the national standards of the USA, Canada, Switzerland, China, India, Mexico, and other countries. The materials timber as well as reinforced and prestress concrete can also be designed according to the international standards.

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