Author
|
Oscar Sigüenza Sabater
|
University
|
University of the Basque Country, Spain
Master's Degree in Timber Construction and Design |
Study on Structural Timber Alternative for Building Performed Using Traditional Systems
This thesis discusses the structural design process and its possible impacts on the utilization of timber-based structural systems shown on a real project of a residential building performed using traditional systems (reinforced concrete structure with grid slabs and ceramic walls).
The structural design was performed using the Dlubal program RFEM. The design process had the following phases:
A) Modeling of the entire structure, including loads.
B) Horizontal and vertical CLT element (panels) design by using the RF‑LAMINATE add-on module.
C) Horizontal steel element (beams) design by using the RF‑STEEL add-on module.
D) Horizontal laminated timber element (beams) design by using the RF‑TIMBER Pro add-on module.
E) Vertical CLT element (panels) design by using the RF‑LAMINATE add-on module.
F) Vertical steel element (columns) design by using the RF‑STEEL add-on module.
G) Vertical laminated timber element (columns) design by using the RF‑TIMBER Pro add-on module.
H) Fire resistance design of the laminated timber elements by using the RF‑TIMBER Pro add-on module.
I) Reduced section design of CLT elements and verification using the RF‑LAMINATE add-on module.
J) Seismic design of the entire structure.
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![KB 001883 | Plate Girder Design According to AISC 360-22 in RFEM 6](/en/webimage/051561/3980997/im1.png?mw=512&hash=b8237709c4f30213fac51d86d32a42bddde72f03)
Plate girder is an economical choice for long spans construction. I-section steel plate girder typically has a deep web to maximize its shear capacity and flange separation, yet thin web to minimize the self-weight. Due to its large height-to-thickness (h/tw) ratio, transverse stiffeners may be required to stiffen the slender web.
![Steel Connection Rigidity and Its Influence on Structural Design](/en/webimage/051432/3972404/Rigidity-caseA.png?mw=512&hash=3be64e68ab2956fd2b92f0afa1559b3a8c72b468)
Understanding steel connection rigidity is crucial in structural design. Often, connections are treated as strictly pinned or rigid, but this can lead to uneconomical or even dangerous designs. Explore how Dlubal Software's RFEM and Steel Joints add-on help verify connection stiffness and moment resistance, ensuring safer and more economical designs.
![Timber Panel Wall Stiffnesses](/en/webimage/049956/3893282/49956.png?mw=512&hash=8dfc2b6d0af6ade74073e21655c6a73a34a77751)
In this article, the calculation of a timber panel wall with the beam panel thickness type is compared with a manual calculation.
![KB 001848 | Timber Column Design as per the 2018 NDS Standard in RFEM 6](/en/webimage/040983/3525158/Timber_Column_for_KB_1848.png?mw=512&hash=8767c3300658d77c253bb7ff632327937a04dd95)
Using the Timber Design add-on, timber column design is possible according to the 2018 NDS standard ASD method. Accurately calculating timber member compressive capacity and adjustment factors is important for safety considerations and design. The following article will verify the maximum critical buckling strength calculated by the Timber Design add-on using step-by-step analytical equations as per the NDS 2018 standard including the compressive adjustment factors, adjusted compressive design value, and final design ratio.
![Add-on "Steel Joints for RFEM 6" | Component Library](/en/webimage/043097/3898884/steel_joints_components.png?mw=512&hash=e4f835906155863fc7019d5043b22e553dc766f9)
- Numerous component types, such as base and end plates, web angles, fin plates, gusset plates, stiffeners, tapers, or ribs for easy input of typical connection situations
- Universally applicable basic components (such as plates, welds, bolts, auxiliary planes) for modeling complex connection situations
- Graphical display of the connection geometry with dynamic updating during the input
- Wide range of cross-section shapes: I-sections, U-sections, angles, T-sections, hollow sections, built-up cross-sections and thin-walled sections
- Library in Dlubal Center with program template connections as well as user-defined templates
- Automatic adaptation of the connection geometry based on the relative arrangement of the components to each other – even in case of subsequent editing of the structural components
![Feature 002825 | Shear Walls and Deep Beams Consisting of Members](/en/webimage/050709/3925056/50709.png?mw=512&hash=8e57b70946dcc367584aee1ee2d82b3efafa652f)
When generating shear walls and deep beams, you can assign not only surfaces and cells, but also members.
![Feature 002824 | OSB Material for USA and Canada](/en/webimage/050460/3955503/2024-06-28_10-42-39.png?mw=512&hash=5ec86ff7955d8c9a50e53301df3f21fceda009a5)
In RFEM, the oriented strand board (OSB) material is available for the USA and Canada. The material parameters are taken from the "Panel Design Specification manual".
![Feature 002820 | Limit Plastic Strain for Welds](/en/webimage/050344/3881226/1.png?mw=512&hash=9d7f6c198b6d4ae6ee8f2fa8bca75f85579e14c9)
In the ultimate configuration of the steel joint design, you have the option to modify the limit plastic strain for welds.
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