Part II - Column 3D Interaction Surface vs Code Biaxial Formulae 4

[Trenno]

thread507-460377

What are people's opinions on applying 3D interaction diagrams or codified biaxial for walls?

I'm thinking factors like high aspect ratios, return walls and end bar clusters would skew the results compared to a stocky square column. Essentially the buckling mechanism would be different a "wall" and a "column." 2D element v 1D element.

 

[Trenno]

Yeah it is, developing moment-curvature relationships for rectangular and compound wall setups. But I suppose it doesn't touch on the some of the points of discussion above.

Back to the original question, I think I'm close to convincing myself that using the Eurocode interaction equation with code based minimum minor axis moments is a reasonable, conservative approach.

EDIT: turns out I sent you the WHAM paper and spreadsheet last September!