The input parameters relevant for the selected standards are suggested by the program in accordance with the rules. Furthermore, it is possible to enter response spectra manually. Dynamic load cases define a direction of response spectra effects and the structure eigenvalues that are relevant for the analysis.
RF-/DYNAM Pro - Equivalent Loads | Input
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Not all structural elements of a real building are included in a structural model. As an example, we can look at a pipe that runs along a steel girder frame.
It may become necessary to analyze pipe cross‑sections as surface models in plant engineering in particular, but also when analyzing details of structural systems. For this purpose, RFEM offers the option to create pipe cross‑sections automatically by means of a line.
In many cases, it is necessary to filter the results for the display of values on surfaces so as not to show all the numbers. In displaying the reinforcement arrangement, you can, for example, hide values that are below the already used basic reinforcement.
In RFEM 5 and RSTAB 8, it is possible to assign nonlinearities to member hinges. In addition to the nonlinearities "Fixed if" and "Partial activity", you can select "Diagram". If you select the "Diagram" option, you have to specify the according settings for the activity of the member hinge. For the individual definition points, it is necessary to specify the abscissa and ordinate values (deformations or rotations and the according internal forces) that define the hinge.
- Response spectra in accordance with different standards
- The following standards are implemented:
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EN 1998-1:2010 + A1:2013 (European Union) -
DIN 4149:1981-04 (Germany) -
DIN 4149:2005-04 (Germany)
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IBC 2000 (USA) -
IBC 2009-ASCE/SEI 7-05 (USA)
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IBC 2012/15 - ASCE/SEI 7-10 (USA)
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IBC 2018 - ASCE/SEI 7-16 (USA)
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ÖNORM B 4015:2007-02 (Austria) -
NTC 2018 (Italy) -
NCSE-02 (Spain) -
SIA 261/1:2003 (Switzerland) -
SIA 261/1:2014 (Switzerland)
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SIA 261/1: 2020 (Switzerland)
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O.G. 23089 + OG 23390 (Turkey) -
SANS 10160-4 2010 (South Africa) -
SBC 301:2007 (Saudi Arabia) -
GB 50011 - 2001 (China) -
GB 50011 - 2010 (China)
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NBC 2015 (Canada) -
DTR BC 2-48 (Algeria) -
DTR RPA99 (Algeria)
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CFE Sismo 08 (Mexico) -
CIRSOC 103 (Argentina) -
NSR - 10 (Colombia) -
IS 1893:2002 (India) -
AS1170.4 (Australia) -
NCh 433 1996 (Chile)
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- The following National Annexes according to EN 1998‑1 are available:
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DIN EN 1998-1/NA:2011-01 (Germany)
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ÖNORM EN 1991-1-1:2011-09 (Austria)
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NBN - ENV 1998-1-1: 2002 NAD-E/N/F (Belgium) -
ČSN EN 1998-1/NA:2007 (Czech Republic) -
NF EN 1998-1-1/NA:2014-09 (France) -
UNI-EN 1991-1-1/NA:2007 (Italy)
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NP EN 1998-1/NA:2009 (Portugal) -
SR EN 1998-1/NA:2004 (Romania) -
STN EN 1998-1/NA:2008 (Slovakia) -
SIST EN 1998-1:2005/A101:2006 (Slovenia) -
CYS EN 1998-1/NA:2004 (Cyprus) -
NA to BS EN 1998-1:2004:2008 (United Kingdom) - NS-EN 1998-1:2004 + A1:2013/NA:2014 (Norway)
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- User-defined response spectra
- Direction-relative response spectrum approach
- Relevant mode shapes for the response spectrum can be selected manually or automatically (5% rule from EC 8 can be applied)
- Generated equivalent static loads are exported to load cases, separately for each modal contribution and separately for each direction
- Result combinations by modal superposition (SRSS and CQC rule) and direction superposition (SRSS or 100% / 30% rule)
- Signed results based on the dominant eigenmode can be displayed
Equivalent static loads are generated separately for each relevant eigenvalue and excitation direction. They are exported to static load cases to perform the linear static analysis in RFEM/RSTAB.
The equivalent load analysis calculation generates load cases and result combinations. The load cases include the generated equivalent loads, which are subsequently superimposed in result combinations. First, the modal contributions are superimposed with the SRSS or CQC rule. Signed results based on the dominant mode shape are possible.
Afterwards, the directional components of earthquake actions are combined with the SRSS or the 100% / 30% rule.
The input parameters relevant for the selected standards are suggested by the program in accordance with the rules. Furthermore, it is possible to enter response spectra manually. Dynamic load cases define a direction of response spectra effects and the structure eigenvalues that are relevant for the analysis.
I design pipelines using the RF-PIPING Design add-on module. I have created a new prestress load case and loaded the piping with longitudinal displacement.
Is it possible to add this new load case to combinations that are generated automatically?
Is it possible to add this new load case to combinations that are generated automatically?
Is it possible to automatically generate zones in RWIND 2?
How can I create a response spectrum according to ASCE 7‑22?
I have display problems in RFEM 6, RSTAB 9, and RSECTION 1, or the program crashes immediately after starting it. What options do I have to improve this?
How can I adjust font sizes in RFEM 6 and RSTAB 9 for a screen view and a printout report?
In the case of stairs with a complicated geometry, it is often difficult to design welds by using the analytical methods. How can I do this with RFEM?
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