CFT Tube Columns

[Veer007]

Hey Guys, I just came through the topic that HSS steel are filled with concrete for resist lateral load.. Is this structurally acceptable? Curious about interesting answers...

Thanks in advance!!

 

[DrZoidberWoop]

I haven't designed any myself, but the topic can be found in AISC Spec. Section I. However, I have installed them, and one tip I could give is to make the steel wall thicker than necessary because the walls will tend to bulge slightly and unrestrained ends will have a "flute" due to the pressure from the concrete pour.

 

[Veer007]

Oh . thanks..I will take a look.. Is it not preferable in practice?

Thanks in advance!!

 

[jimstructures]

I have never seen a stainless steel tube filled with concrete, but would not be surprised to hear they exist. The ones mentioned in the AISC manual are mild steel not stainless steel and usually structural shapes.

Jim

 

[WARose]

'Composite Construction Design For Buildings' by: Viest, et al. (1997; published by: McGraw-Hill/ASCE), has a section on this.

IIRC, it does enhance some aspects of a column's strength.

But I have not seen this used in practice with that expectation. (Primarily because of QC concerns.)

 

[HTURKAK]

Eurocode 4 ( Design of composite steel and concrete structures ) does not address the use of Concrete-Filled Stainless
Steel Tubular Columns. Moreover , i do not see any advantage for the use of stainless steel which would be with very high cost..

You may look to the following book for the design and analysis ;

Concrete-Filled Stainless Steel Tubular Columns (by Vipulkumar I. Patel, Qing Quan Liang,M. N. S. Hadi )

https://www.taylorfrancis.com/books...shvarbhai-patel-qing-quan-liang-muhammad-hadi