Bond between Concrete and Steel column
Bond between Concrete and Steel column
(OP)
Hello,
I have a situation in a house basement where the concrete floor slab was poured around the steel HSS teleposts (which are on piles). The floor slab is heaving slightly, and it is lifting the telepost column with it due to the bond between the slab and steel. I'm trying to find a way to quantify the force of this bond but am having trouble. It is not really a "friction" force as there is no force normal to the column. Thanks ahead for any advice.
I have a situation in a house basement where the concrete floor slab was poured around the steel HSS teleposts (which are on piles). The floor slab is heaving slightly, and it is lifting the telepost column with it due to the bond between the slab and steel. I'm trying to find a way to quantify the force of this bond but am having trouble. It is not really a "friction" force as there is no force normal to the column. Thanks ahead for any advice.






RE: Bond between Concrete and Steel column
Anyway, to the matter of adhesion between structural steel and concrete...
https://bibliotecadigital.ipb.pt/bitstream/10198/1...
Since we are seeking upper values, not warranted ones, 15 to 20 MPa?
For hollow void shapes should be lower than solid, out of the feasibility of local detachment starting the failure at lower average stresses.
RE: Bond between Concrete and Steel column
There seems to be something else at work in this situation.
RE: Bond between Concrete and Steel column
If the screw portion is at the bottom, there is more than just friction there.
RE: Bond between Concrete and Steel column
@ToadJones, I'm not sure how the post was actually installed under the slab, can you clarify if that is what you mean?
RE: Bond between Concrete and Steel column
RE: Bond between Concrete and Steel column
http://www.google.com/imgres?um=1&hl=en&sa...
RE: Bond between Concrete and Steel column
RE: Bond between Concrete and Steel column
If you see one at the top, it is probably save to assume that the buried end is just a thin base plate.
RE: Bond between Concrete and Steel column