We provide hints and tips to help you get started with the basic program RFEM.
Action Combination for Road Bridges According to EN 1991-2
Video
First Steps with RFEM
Description
In addition to the basic combination rules of EN 1990, there are other combination conditions for actions on road bridges specified in EN 1991‑2. For this, RFEM and RSTAB provide automatic combinations that can be activated in General Data when selecting the standard EN 1990 + EN 1991‑2. The partial safety factors and combination coefficients depending on the action category are preset when selecting the respective National Annex.
Keywords
Dlubal Knowledge Base Bridge construction Road bridges Action combination Road traffic Load groups Lane Dlubal KB Knowledge Base Technical Contribution
Links
- Automatic Generation of Load Combinations in RFEM
- Automatic Generation of Load Combinations in RSTAB
- Structural engineering software for bridge structures
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Action Combination for Road Bridges According to EN 1991-2
In addition to the basic combination rules of EN 1990, there are other combination conditions for actions on road bridges specified in EN 1991‑2 that must be taken into account.
New
Increased Calculation Performance by Reducing the Nodal Degrees of Freedom
The number of degrees of freedom in a node is no longer a global calculation parameter in RFEM (6 degrees of freedom for each mesh node in 3D models, 7 degrees of freedom for the warping torsion analysis). Thus, each node is generally considered with a different number of degrees of freedom, which leads to a variable number of equations in the calculation.
This modification speeds up the calculation, especially for models where a significant reduction of the system could be achieved (e.g. trusses and membrane structures).
- How can I display the deformation in the current construction stage and in relation to the initial system in RF‑STAGES?
- Is it also possible to specify a cable length in RF‑FORM‑FINDING?
- How is it possible to consider the real cross-section geometry of member elements in RWIND Simulation?
- Is it possible to define orthotropic surface loads in RFEM? I would like to subject a surface to different temperature loads by a direction.
- The calculation of my model results in unrealistically high stresses at many locations. What is the reason?
- Is it also possible to enter the temperature for a surface in the XZ plane by using the height (variable in Z)?
- Does Dlubal Software provide any solution for composite bridge construction, or perhaps also verification examples or reference objects?
- In the case of the "Initial strain from other LC/CO" feature, I cannot retrace internal forces. How is this function mapped internally?
- Why are the results in the RF‑/STAGES add-on module not consistent with the corresponding load cases and combinations in the program RFEM or RSTAB?
- Which analysis is used in RF‑STAGES or STAGES to calculate temporary loads and the generated combinations?
