We provide hints and tips to help you get started with the basic program RFEM.
Support Types and Supports
Video
First Steps with RFEM
Description
This video is all about supports. Which types are available, how they are displayed, what they look like, and much more.
In simple terms, supports are the connections between a structure and a fixed point. Depending on the support type, they prevent certain displacements or rotations of the structure.
We show you the most common types in structural engineering, which movements they allow (the so-called degrees of freedom) and the respective support forces that can occur.
Have fun!
Keywords
Dlubal Infotainment Support Roller support Pinned support Fixed support Restrained support Nodal support E-learning Entertainment Construction industry Civil engineering Civil engineer Studies Structural engineering Structural engineer Civil engineering studies Structural analysis
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Explanation of Support Nonlinearities on Example | 2.1 Rotation
In practice, an engineer often faces the task of representing the support conditions as close to reality as possible in order to be able to analyze deformations and internal forces of the structure subjected to their influence and to enable as much cost‑efficient construction as possible.
![External Pressure Coefficients, Cp, for Domed Roofs with a Circular Base (according to Figure 27.3-2 [1])](/-/media/Images/website/img/000001-010000/009001-009100/009063.png?la=en&mlid=212BADE826004E5F93E6ECC01B32C63F&hash=9A4B16505B657E18464D86D99BC6685EA3C256CA)
- I obtain lifting support forces, even though the loads act in the opposite directions. How is this possible?
- Does the nonlinearity that can be activated for a surface support in the z‑direction refer to the entire supported surface, or only to the areas that correspond to the nonlinearity?
- In my model, there is a member that is only subjected to tension, but cannot be defined as a tension member, otherwise the model becomes unstable. After the calculation according to the second-order analysis, small moments arise. How can I redistribute these internal forces efficiently?
- Why do I get large differences for the design of a longitudinally stiffened buckling panel in comparison with the German and Austrian National Annex?
- How can I create a curved or arched section?
- Is it possible to manually specify a longitudinal reinforcement for design in RF‑PUNCH Pro?
- After the design with RF‑/TIMBER Pro, I optimized a cross-section. Why is the utilization of the optimized cross-section exceeded now?
- Why are the stresses of the 90° orientation not displayed for a layer with the orthotropy direction 90° for σb,90 in RF‑LAMINATE?
- How can I view the depth of the concrete compression zone in RF‑/CONCRETE?
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If I do not specify any basic reinforcement in RF‑CONCRETE Surfaces, I obtain the value X as an additionally required reinforcement. If I enter this value X as the provided basic reinforcement, I correctly do not get any additional required reinforcement.
However, if I enter a lower value than the determined required total reinforcement as the basic reinforcement, the additionally required reinforcement is increased in such a way that the originally required reinforcement content is exceeded. Why?
