Catenary Model Designs for Streetcars in Norway
The Infrastructure department of SDEA Engineering Solutions has extensive experience in the railroad sector, especially in designing electrification using overhead contact lines (OCS/OLE), where it has developed projects for high-speed trains in England and streetcar lines in Norway.
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In projects for streetcars, the overhead catenary designs lead to elements with highly non-linear behavior, with large deformations that require correct structural analysis so as not to put the line out of service.
After an exhaustive comparison of the software packages on the market, SDEA Engineering Solutions found the answer it needed in Dlubal’s RFEM software. This program has a very good learning curve (as easy to handle as an Excel sheet), a large number of tutorials, and extensive ad hoc documentation. In addition, its team of technicians deserves special mention, as they worked hard to solve all the questions that arose during the initial phases of the project.
From a technical point of view, the option of creating fully parameterized models was essential, from the geometry, to the loads, to the final result output. Another fundamental point was the software's intuitive and agile menu for defining action combinations and the fact that many of them were predefined, based on the most relevant standards of a wide variety of countries.
Project LocationStavanger, Norway
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Contact our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.
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.
Compared to the RF-/STEEL EC3 add-on module (RFEM 5/RSTAB 8), the following new features have been added to the Steel Design add-on for RFEM 6 / RSTAB 9:
- In addition to Eurocode 3, other international standards are integrated (e.g. AISC 360, CSA S16, GB 50017, SP 16.13330)
- Consideration of hot-dip galvanizing (DASt guideline 027) in the fire protection design according to EN 1993-1-2
- Input option for transverse stiffeners that can be taken into account in the shear buckling analysis
- Lateral-torsional buckling can also be checked for hollow sections (e.g. relevant for slender, high rectangular hollow sections)
- Automatic detection of members or member sets valid for the design (e.g. automatic deactivation of members with invalid material or members already contained in a set of members)
- Design settings can be adjusted individually for each member
- Graphical display of the results in the gross section or the effective section
- Output of the used design check formulas (including a reference to the used equation from the standard)
- How can I optimize cross-sections within the steel design?
- Where can I find the materials for the corresponding National Annexes in RFEM 6 and RSTAB 9?
- Is it also possible to use RF‑/TOWER Loading without the other TOWER add-on modules?
- I do not want to design a cross-section in the RF‑/STEEL EC3 add-on module. Can I quickly remove this cross-section from the selection?
- Are the models and presentations from Info Day 2018 freely available, and can you send them to me?
- I design a set of members by using the equivalent member method in RF‑/STEEL EC3, but the calculation fails. The system is unstable, delivering the message "Non-designable - ER055) Zero value of the critical moment on the segment."What could be the reason?
- My aim is to mesh a circular hole plate in a mapped way. Is such a meshing possible in RFEM?
- I have a trapezoidal roof structure supported by beams. However, the moments on the beams are smaller than they should be. What could be the reason for this?
- What is the meaning of the warning message ER061) Minimum amplifier of design loads <1?
- Is it possible to divide a free surface load by the existing lines in RFEM?