Fascinating customer projects designed with the Dlubal structural analysis software.
Response Spectrum Analysis for RFEM 6 / RSTAB 9
Extension of Modal Analysis for Multi-Modal Response Spectrum Analysis
Customer Projects
Forces of nature are a natural enemy of every structural engineer. But don't worry, you can perform your calculations in advance in the event of an earthquake. The Response Spectrum Analysis add-on will help you with this. It performs seismic analyses using the multi-modal response spectrum method. You can create the response spectra required for this in compliance with the standards or user-defined. The program use them to generate the equivalent static forces.
The add-on includes even more for you, for example, an extensive library of accelerograms from seismic zones. You can use them to generate the response spectra as well.
Please Note: The seismic analysis using the multi-modal response spectrum analysis requires the analysis of natural vibrations in the Modal Analysis add-on.
1
Features
- Response spectra of the following standards are implemented:
-
EN 1998-1:2010 + A1:2013 (European Union)
-
DIN 4149:2005-04 (Germany)
-
SIA 261:2020-08 (Switzerland)
- SIA 261:2014-07 (Switzerland)
-
ASCE/SEI 7-22 (USA)
- ASCE 7 | 2016 - IBC | 2018 (USA)
- ASCE 7 | 2010 - IBC | 2012/15 (USA)
- ASCE 7 | 2005 - IBC | 2009 (USA)
- IBC 2000 (USA)
-
CFE Sismo:2015-07 (Mexico)
-
CIRSOC 103:2013-07 (Argentina)
-
GB 50011-2010-12 (China)
-
IS 1893:2016-12 (India)
-
NBC 2020 (Canada)
-
NCSE 02:2009 (Spain)
-
NPR 9998:2020-12 (Netherlands)
-
NTC 2018-01 (Italy)
-
P 100-1:2013-08 (Romania)
-
TBEC:2018 (Turkey)
-
- The following National Annexes according to EN 1998‑1 are available:
- DIN EN 1998-1/NA:2021-07 (Germany)
- DIN EN 1998-1/NA:2011-01 (Germany)
-
ÖNORM EN 1998-1/NA:2017-07 (Austria)
- SN 1998-1/NA:2019-12 (Switzerland)
- 1998-1/NA:2013-05 (European Union)
-
BAS EN 1998-1/NA:2018 (Bosnia and Herzegovina)
-
BDS 1998-1/NA:2012-03 (Bulgaria)
-
BS EN 1998-1/NA:2008-08 (United Kingdom)
-
CSN EN 1998-1/NA:2016-09 (Czech Republic)
-
CYS EN 1998-1/NA:2009-03 (Cyprus)
-
ELOT EN 1998-1/NA:2015-04 (Greece)
-
HRN EN 1998-1/NA:2011-06 (Croatia)
-
LST EN 1998-1/NA:2010-12 (Lithuania)
-
ILNAS EN 1998-1/NA:2011-09 (Luxembourg)
-
LVS EN 1998-1/NA:2015-01 (Latvia)
-
MS EN 1998-1/NA:2017-01 (Malaysia)
-
MSZ EN 1998-1/NA:2013-07 (Hungary)
-
NBN EN 1998-1/NA:2011-10 (Belgium)
-
NF EN 1998-1/NA:2013-12 (France)
-
NP EN 1998-1/NA:2010-03 (Portugal)
-
NS EN 1998-1/NA:2021-06 (Norway)
-
SIST EN 1998-1/NA:2009-01 (Slovenia)
- SR EN 1998-1/NA:2008-11 (Romania)
-
SRPS EN 1998-1/NA:2018-12 (Serbia)
-
SS EN 1998-1/NA:2013-02 (Singapore)
-
STN EN 1998-1/NA:2009-04 (Slovakia)
- UNE EN 1998-1/NA:2020-01 (Spain)
- UNI EN 1998-1/NA:2013-03 (Italy)
-
- User-defined response spectra or those generated from accelerograms
- Direction-relative response spectrum approach
- Manual or automatic selection of the relevant mode shapes of response spectra (5% rule of EC 8 applicable)
- Result combinations by modal superimposition (SRSS or CQC rule) and by direction superimposition (SRSS or 100% / 30% rule)
- Accidental torsional actions can be taken into account automatically
- Signed results based on the dominant mode shape can be displayed
2
Input
The Dlubal structural analysis software does a lot of work for you. The input parameters, which are relevant for the selected standards, are suggested by the program in accordance with the rules. Furthermore, you can enter response spectra manually.
Load cases of the type Response Spectrum Analysis define the direction in which response spectra act and which eigenvalues of the structure are relevant for the analysis. In the spectral analysis settings, you can define details for the combination rules, damping (if applicable), and zero-period acceleration (ZPA).
3
Calculation
Did you know? Equivalent static loads are generated separately for each relevant eigenvalue and excitation direction. These loads are saved in a load case of the Response Spectrum Analysis type and RFEM/RSTAB performs a linear static analysis.
4
Results
The load cases of the type Response Spectrum Analysis contain the generated equivalent loads. First, the modal contributions have to be superimposed with the SRSS or CQC rule. In this case, you can use the signed results based on the dominant mode shape.
Afterwards, the directional components of earthquake actions are combined with the SRSS or 100% / 30% rule.
Advantages
- User-defined response spectra or those generated from accelerograms
- Approach of direction-related response spectra
- Automatic consideration of accidental torsional effects
- Manual or automatic selection of the relevant mode shapes for response spectra (5% rule)
- Result combinations by modal superimposition (SRSS or CQC rule) and directional superimposition (SRSS or 100% / 30% rule)
- Automatic generation of an exceptional design situation for the subsequent design
Price
New
Using Nonlinearities in Response Spectrum Analysis in RFEM 6
This article shows how to deal with nonlinearities in a response spectrum analysis.
Customers who bought this product also bought
RSTAB 9
Special Solutions
First, the two-part Optimization & Costs / CO2 Emission Estimation add-on finds suitable parameters for parameterized models and blocks via the artificial intelligence (AI) technique of particle swarm optimization (PSO) for compliance with common optimization criteria. Second, this add-on estimates the model costs or CO2 emissions by specifying unit costs or emissions per material definition for the structural model.
Price of First License
1,650.00 EUR
1,650.00 EUR
RSTAB 9
Dynamic Analysis
Earthquakes may have a significant impact on the deformation behavior of buildings. A pushover analysis allows you to analyze the deformation behavior of buildings and compare them with seismic actions. Using the Pushover add-on, you can analyze the seismic actions on a particular building and thus assess whether the building can withstand the earthquake.
Price of First License
1,450.00 EUR
1,450.00 EUR
RFEM 6
Design
The Multilayer Surfaces add-on allows you to define multilayer surface structures. The calculation can be carried out with or without the shear coupling.
Price of First License
1,250.00 EUR
1,250.00 EUR
