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3. Application example
The example detailed here puts the principles of 2nd-order elastic analysis into practice. For a portal frame structure (figure 24 ), we present in succession :
determination of the α factor cr and whether or not a 2nd order analysis is required for the various load combinations considered;
a global 2nd order elastic analysis taking into account P - Δ effects by amplifying lateral deformation moments (method II);
analysis of the structure using the lump-sum method (method III, i.e. lump-sum consideration of P - Δ effects during analysis and buckling checks of columns assumed to have displaceable nodes).
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Conclusion
Bibliography
- BOISSONNADE (N.), FLEISCHER (O.), FRANSSEN (J.M.), JASPART (J.P.), MAQUOI (R.), WEYNAND (K.) - Design of Tubular Steel Structures – Training and Education for the Implementation of Eurocode 3. - CIDECT, Comité International pour le Développement et l'Étude de la Construction Tubulaire (2008).
- MAQUOI...
Standards and norms
- Eurocode 3 – Design of steel structures. Part 1-1: General rules and rules for buildings. - NF EN 1993-1-1 AFNOR - Octobre 2005
- Eurocode 3 – Structural steel design – National Annex to NF EN 1993-1-1:2005. Part 1-1: General rules and rules for buildings. - NF EN 1993-1-1/NA AFNOR - 31 Août 2013
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CTICM Industrial technical center for metal construction
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BNCM Bureau de normalisation de la construction métallique (Steel construction standardization office)...
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