Considering Adjacent Settlement for Separated Floor Slabs with RF-SOILIN
Settlement within a structural system can also affect the surrounding structures. The adjacent settlement of separated slabs can be considered with RF-SOILIN using a small trick.
If there is no connection between the adjacent floor slabs, the settlement of one slab has no effect on the other slab.
Since this assumption is incorrect for the calculation of settlements or is often on the unsafe side, it is usually better to consider the adjacent settlement. The easiest way is to try to connect the surfaces by a foundation overlap with negligible stiffness. Entering a foundation overlap around the buildings' floor slabs also allows you to better estimate the influence of the settlement on the surrounding area. This way, you can manually increase it iteratively until the subsidence basin is completely enclosed by the foundation overlap.
Due to the additional surfaces, the settlements are also transferred to other adjoining building parts, and the total deformation of all buildings is represented somewhat more realistically.
This approach is, of course, not limited to the RF-SOILIN add-on module, but can also be applied to other foundation types.
Dipl.-Ing. (BA) Markus Baumgärtel
Mr. Baumgärtel provides technical support for customers of Dlubal Software.
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The calculation of complex structures by means of finite element analysis software is generally performed on the entire model. However, the construction of such structures is a process carried out in multiple stages where the final state of the building is achieved by combining the separate structural parts. To avoid errors in the calculation of overall models, the influence of the construction process must be considered. In RFEM 6, this is possible by using the Construction Stages Analysis (CSA) add-on.
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The Concrete Design add-on combines all CONCRETE add-on modules from RFEM 5/RSTAB 8. Compared to these add-on modules, the following new features have been added to the Concrete Design add-on for RFEM 6 / RSTAB 9:
- Input of design-relevant specifications (effective lengths, durability, reinforcement directions, surface reinforcement) directly in the RFEM or RSTAB model
- Extensive input options for longitudinal and transverse reinforcement of members
- Detailed intermediate results for the design with specification of the equations of the applied standard for better traceability of the calculation
- New interaction diagram with interactive graphic for N, M, and M + N from cross-section design incl. output of the secant and tangent stiffness
- Design of the defined reinforcement in the ultimate limit state and serviceability limit state incl. graphical output of the design ratio for the respective component
- Automatic check of the defined reinforcement with regard to the construction or general reinforcement rules for reinforced member and surface components
- Cross-section design optionally with net values of the concrete section
- Design according to the Russian standard SP 63.13330
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- What is the meaning of the two terms "Factorize provided reinforcement" and "Optimize provided reinforcement" in the concrete design?
- Can I switch the required reinforcement in the result tables from "mesh nodes" to "grid points?"
- Where can I find the materials for the corresponding National Annexes in RFEM 6 and RSTAB 9?
- I have a roof structure resting on a steel column that runs to the foundations. The column runs through a perimeter wall that supports the false ceiling. A considerable part of the load from the roof is transferred to the wall. I want the steel column to carry all the vertical loads from the roof. How can I do it?
- Are the models and presentations from Info Day 2018 freely available, and can you send them to me?
- In RF‑CONCRETE Surfaces, I obtain a high amount of reinforcement in relation to a lever arm that is almost zero. How is such a small lever arm of internal forces created?
- What is the meaning of the superposition according to the CQC rule in a dynamic analysis??
- When converting from the manual definition of reinforcement areas to the automatic arrangement of reinforcement according to Window 1.4, the result of the deformation calculation differs, although the basic reinforcement has not been modified. What is the reason for this change?
- Does the program check the lap length of the vertical stirrups of a block foundation with smooth bucket sides?
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
Soil-structure interaction analysis and determination of elastic foundation coefficients based on soil data