CONCRETE TO CONCRETE SHEAR LINKS
CONCRETE TO CONCRETE SHEAR LINKS
(OP)
Dear Friends
I have Column encasement "Sleeve" for the sake of bearing capacity enhancement
My question if you have specific information [Guide, Manual, or Research] that summarized the best solution techniques for shear transfer?
Used/typical shear links; consist of steel rebars with 90 curved end drilled and epoxy-fixed to existing concrete column (12x24")
I have Column encasement "Sleeve" for the sake of bearing capacity enhancement
My question if you have specific information [Guide, Manual, or Research] that summarized the best solution techniques for shear transfer?
Used/typical shear links; consist of steel rebars with 90 curved end drilled and epoxy-fixed to existing concrete column (12x24")
RE: CONCRETE TO CONCRETE SHEAR LINKS
RE: CONCRETE TO CONCRETE SHEAR LINKS
Similar to composite concrete toppings, I expect that the bulk of the actual shear transfer mechanism is bond. If you wanted, you could have them chip keys into the perimeter of the existing column to allow for a more robust interface between the old and new concrete.
RE: CONCRETE TO CONCRETE SHEAR LINKS
Added concrete Encasement [sleeve] 4"
shear links; steel rebar [#4] 4 embedment length
looking for enquation that [similar to shear studs] that i could apply to calculate the shear transfer between the old column and new concrete layer (to check the required number of shear links @ spacing) also to study the best shape of hooked end (90 degree/direction or ?). Also to study the actual load distribution between the column and the attached concrete encaesment
if that possible ?
RE: CONCRETE TO CONCRETE SHEAR LINKS
it is the same problem
but i was thinking if the column is also weak and need to increase its bearing capacity
i did delete the old thread cause of the "..."
still i deeply appreciate/respect your and others inputs
.
i thought i could start with the column encasement then do the RAFT thickening [reinforced top layer]
Tow major parameters here; layer thickness & shear links (numbers & spacing)
RE: CONCRETE TO CONCRETE SHEAR LINKS
to add steel jacket (these pictures from different renovation project)
My second question
if there is similar case studies to read/compare ? (details are always appreciated)
only built-up column i found or composite encased-column
RE: CONCRETE TO CONCRETE SHEAR LINKS
RE: CONCRETE TO CONCRETE SHEAR LINKS
Any references in mind you recommend ? [concrete columns Strengthening/Repairing techniques] ?
RE: CONCRETE TO CONCRETE SHEAR LINKS
RE: CONCRETE TO CONCRETE SHEAR LINKS
all noted ( provide a shear transfer mechanism that doesn't rely on friction )
RE: CONCRETE TO CONCRETE SHEAR LINKS