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003494
Dipl.-Ing. (FH) Gerhard Rehm
2021-06-30

Defining Lateral Supports with Different Positions

I want to define lateral supports along the structural component axis, which sometimes act on the upper flange and sometimes on the lower flange. However, it is only possible to select one item for each member. How can I create the entry?

Answer:

To add different supports to a structural component, it must consist of several members and the design must be carried out using a set of members. It is then possible to assign different parameters to the individual members. The video shows the procedure.

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[EN] FAQ 003494 | I would like to define lateral supports along the axis of a structural component that ...
RFEM Model with Layout of Lateral Restraints
RFEM Model with Layout of Lateral Restraints
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Mr. Rehm is responsible for developing products for timber structures, and he provides technical support for customers.

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Springs for Surface Foundation
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Image 01 - Support Conditions for Surface Foundation
A previous article presented different variants of surface elastic foundations in addition to the traditional subgrade reaction modulus method. The following article describes another method for surface foundation. This method considers the adjacent ground areas by means of a foundation overlap. In this case, foundation parameters refer to the continuing works by Pasternak and Barwaschow.
Illustration of a method for performing stability analysis according to DIN EN 1992-1-1 in RFEM 6
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Modell eines Stahlbetonbalkens, der durch Kriechen und Schwinden beeinflusst wird
This technical article addresses the direct deformation analysis of reinforced concrete beams considering the long-term effects of creep and shrinkage. The direct calculation according to Eurocode 2 (EN 1992-1-1, Section 7.4.3) is explained using a single-span beam. Particular emphasis is placed on tension stiffening, behavior in the cracked state based on the distribution factor (damage parameter), and consideration of shrinkage and creep behavior.
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RFEM and RSTAB models can be saved as 3D glTF models (*.glb and *.glTF formats). View the models in 3D in detail with a 3D viewer from Google or Babylon. Take your VR glasses, such as Oculus, to "walk" through the structure.

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Activation of Camera Flight Mode in RFEM

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Material model Anisotropic | Damage, nonlinear behavior, concrete and reinforced concrete

The "Nonlinear Material Behavior" add-on includes the Anistropic | Damage material model for concrete structural components. This material model allows you to consider concrete damage for members, surfaces, and solids.

You can define an individual stress-strain diagram via a table, use the parametric input to generate the stress-strain diagram, or use the predefined parameters from the standards. Furthermore, it is possible to consider the tension stiffening effect.

For the reinforcement, both nonlinear material models "Isotropic | Plastic (Members)" and "Isotropic | Nonlinear Elastic (Members)" are available.

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In the Concrete Design add-on, you can determine the required longitudinal reinforcement for the direct crack width analysis (w k).

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