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Eurocode 2nd Order Analysis

Eurocode 2nd Order Analysis

Eurocode 2nd Order Analysis

(OP)
I'm an engineer in the States that is most familiar with the 2nd order analysis procedures outlined in AISC. I'm now working on a project in Europe, however, so I will be designing a building per EN 1993-1-1:2005. In the Eurocode, I'm having some difficulty finding concise information on the 2nd order procedures available. So, a few questions of mine are as follows:

Column Design (Sway Condition) -
It looks like the provisions of section 5.3.2 Imperfections for global analysis of frames is similar to the Direct Analysis Method. Is this method more preferable in a finite element analysis compared to section 6.3.3 Uniform members in bending and axial compression?

I also cannot find a section in this version of the Eurocode that clearly defines unbraced length / k-values. NCCI document SN002a-EN-EU says to use the distance between restraints of the compression flange with a k = 1.0, but DD ENV 1993-1-1: 1992 Annex E discusses the procedure to calculate k which is similar to the alignment charts in AISC. What am I missing here, am I crossing code equations?

Any other helpful hints/tips/considerations are appreciated.

Feeling slightly overwhelmed,

MMinGRB

RE: Eurocode 2nd Order Analysis

Hi

Simplify the design using Section 5.3.2 and calculate k value

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