Bond Between steel tubes and Concrete relationship from AISC
Bond Between steel tubes and Concrete relationship from AISC
(OP)
I would like to calculate the bond between concrete and steel sections(steel tubes,etc)
I found one paper which define the bond relationship (Experimental Study on Shear Splitting Failure of Full-Scale
Composite Concrete Encased Steel Beams)
and I found fs=51.25629.544p
where p =steel area to section area
fs= bond stress between concrete and steel
So my questions are
1.I found in AISC 16.1-95 that reduction safety factor of 0.45 for bond between concrete and steel, but this is for filled composite member not encased(encased mean the tubes are not filled inside with concrete),so is there any section dealing with encased in the AISC (Hence I need this factor to use in the previous paper equation)
2.My second question the equation bond strength by AISC (In the same page is not clear to me ,variables are not clear, can anyone simplify it
Thank you
I found one paper which define the bond relationship (Experimental Study on Shear Splitting Failure of Full-Scale
Composite Concrete Encased Steel Beams)
and I found fs=51.25629.544p
where p =steel area to section area
fs= bond stress between concrete and steel
So my questions are
1.I found in AISC 16.1-95 that reduction safety factor of 0.45 for bond between concrete and steel, but this is for filled composite member not encased(encased mean the tubes are not filled inside with concrete),so is there any section dealing with encased in the AISC (Hence I need this factor to use in the previous paper equation)
2.My second question the equation bond strength by AISC (In the same page is not clear to me ,variables are not clear, can anyone simplify it
Thank you






RE: Bond Between steel tubes and Concrete relationship from AISC
"It is imperative Cunth doesn't get his hands on those codes."
RE: Bond Between steel tubes and Concrete relationship from AISC
I think the formula used in the paper mentioned is good, but I am looking for safety reduction factor as per LRFD method, can you suggest any thing in AISC
Thank you
RE: Bond Between steel tubes and Concrete relationship from AISC
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Bond Between steel tubes and Concrete relationship from AISC
Thank you all
RE: Bond Between steel tubes and Concrete relationship from AISC
1) Composite, without shear anchors, utilizing elastic stresses.
2) Using the plastic capacity of the steel alone but without worrying about local buckling effects.
3) Composite, with shear anchors, utilizing plastic stresses.
Even without a sanctioned bond stress, you've got what you need to design an encased beam.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.