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  1. Figure 01 - Research Issue

    Modeling Approaches for Shear/Hole Bearing Connections by Means of FEA

    For more detailed investigations of shear/hole bearing connections or their immediate environment, the definition of the non-linear contact problem plays an important role. This article uses a solid model to search for comparable and simplified surface models.
  2. Figure 01 - Importing a DXF File as Lines

    Importing a DXF File as Basis for the Modeling

    In RFEM and RSTAB, you can import DXF files via the import function. These DXF files can be used as the basis for modeling a structural system.

  3. Figure 01 - Flanged Guide

    Horizontal Craneway Loads from Skewing of Bridge Cranes

    For crane runways with large spans, the horizontal load from skewing is often relevant for the design. This article describes the origin of these forces and the correct input in CRANEWAY. The practical implementation and the theoretical background are discussed.

  4. Application of Eccentricities in RF-CONCRETE Columns

    When calculating the internal forces for the buckling analysis with the method based on nominal curvature in RF-CONCRETE Columns, the required eccentricities have to be determined.
  5. Figure 01 - Graded Wind Load Over Different Building Heights

    Wind Depending on the Structure Height for Vertical Walls

    The wind loads are regulated according to Eurocode 1 - Actions on structures - part 1-4: General actions - Wind loads. The nationally determined parameters of a respective country can be found in the National Annexes.

  6. Figure 01 - Reinforced Concrete Section: Stress and Strain Diagram

    Reinforced Concrete Beam Design per ACI 318-14 in RFEM

    Using RF-CONCRETE Members, concrete beam design is possible according to ACI 318-14. Accurately designing concrete beam tension, compression, and shear reinforcement is important for safety considerations. The following article will confirm the reinforcement design in RF-CONCRETE Members using step-by-step analytical equations per the ACI 318-14 standard including moment strength, shear strength, and required reinforcement. The doubly reinforced concrete beam example analyzed includes shear reinforcement and will be designed under the ultimate limit state (ULS) design.

  7. Figure 01 - Elastic Foundation

    Modeling and Calculating a Floating Body with RFEM

    To correctly model and calculate floating bodies (special rafts, pontoons, floating jetties, dredgers, floating houses, inflatable islands, floating cranes, houseboats, et cetera), a two-stage calculation is necessary.

  8. Modeling Option 1 and 2 Without Member Elastic Foundation

    Options for Modeling Bored Piles

    RFEM and RSTAB offer different options to model bored piles. One option is to display bored piles as single-valued supports or hinged columns. Another option is the realistic modeling while taking into account the soil by means of applying a member elastic foundation. The two following examples will describe it in detail. However, pile base resistance, skin friction and soil layers are not considered in this technical article.

  9. Figure 01 - Creating a Parts List

    COM Interface in VBA | Creating a Parts List

    Parts lists give information about which and how many parts are necessary for creating a building. They are the basis for identifying the needs and purchasing the components. Parts lists can be created in the design modules such as RF-/STEEL EC3, RF-/TIMBER Pro and so on. Additionally, a customized parts list can be created with the RF-COM/RS-COM interface.

  10. Figure 01 - Option "Save the results of all load increments"

    Iterative RFEM Calculation with Load Increments

    The calculation in RFEM is usually carried out in several calculation steps, the so-called iterations. It is then possible to consider particular characteristics of the model such as objects with nonlinear functions. In addition, by using the iterative calculation, nonlinear effects are taken into account which result from changes in deformation and internal forces in case of the second-order analysis or when considering large deformations (cable theory). In case of complex models, geometric linear calculations are usually not sufficient.

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