Forum Gold and Silver in Schwäbisch Gmünd, Germany
By the day the 2014 State Garden Show begins, the construction of a building with a spectacular façade will be completed in the German town of Schwäbisch Gmünd. The project of the local association for noble metals is supposed to emphasize the reputation of the gold and silver town.
Structural Analysis for Facade Structure
Ingenieurbüro Klöckner GmbH, Nistertal, Germany
EBENER GmbH Fassaden-Profiltechnik, Bad Marienberg, Germany
SWW Stahlbau Westerwald, Heiligenrot, Germany
isin architekten, Aalen, Germany
Edelmetallverband Schwäbisch Gmünd, Germany
The following data refers to the facade construction.
Length: ~ 25 m | Width: ~ 25 m | Height: ~ 25 m | Weight: ~ 55 t
Number of Nodes: 811 | Members: 1,276 | Materials: 2 | Cross-Sections: 7
The house is intended to be used as a place for presentations and events which are associated with matters of gold and silver as well as design.
The design of the building was commissioned by the German planning office isin architekten after winning the design competition. The German engineering office Klöckner carried out the structural calculation of the façade's supporting structure by using RSTAB. For the facade cassettes they used RFEM. In connection with a wind report created by the German I.F.I. Institute for Industrial Aerodynamics, the wind loads to be applied were determined with a model put in a wind tunnel.
The facade envelopes the building like a coat made of gold leaf. But in reality, the approximately 800 facade plates of 1.5 m x 1.5 m consist of an aluminum alloy that is coated on both sides with DURAFLON®, a FEVE stoveenamel finish for façades.
The steel supporting structure of the facade consists of 1,276 members altogether with steel grades of S 235 and S 355. It is fixed to the building at 80 points. Ten round pipe columns of d=159 mm bear the majority of the vertical loads.
The RSTAB add-on module STEEL EC3 was used for the calculation. The facade cassettes with a thickness of 3 mm were calculated by using the RFEM modules RF‑IMP, RF‑STABILITY and RF‑STEEL Surfaces.
The cassettes are stiffened in the field by aluminum edge profiles. These were designed in RF ‑ ALUMINUM.
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Structure stability is not a new phenomenon when referring to steel design. The Canadian steel design standard CSA S16 and the most recent 2019 release is no exception.
SHAPE-THIN determines the effective cross-sections according to EN 1993-1-3 and EN 1993-1-5 for cold-formed sections. You can optionally check the geometric conditions for the applicability of the standard specified in EN 1993‑1‑3, Section 5.2.
The effects of local plate buckling are considered according to the method of reduced widths and the possible buckling of stiffeners (instability) is considered for stiffened sections according to EN 1993-1-3, Section 5.5.
As an option, you can perform an iterative calculation to optimize the effective cross-section.
You can display the effective cross-sections graphically.
Read more about designing cold-formed sections with SHAPE-THIN and RF-/STEEL Cold-Formed Sections in this technical article: Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3.
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Programs Used for Structural Analysis
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
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Design of steel members according to Eurocode 3
Stress analysis of steel surfaces and members
Design of aluminum members according to Eurocode 9
Stability analysis according to the eigenvalue method
Stability analysis according to the eigenvalue method
Generation of equivalent geometric imperfections and pre-deformed initial structures for nonlinear calculations