Punching shear repair by bonded brackets
Punching shear repair by bonded brackets
(OP)
An existing slab has inadequate punching shear capacity at several columns. A proposed approach is to provide steel brackets/shear heads/corbels, epoxy bonded to the column and slab. Does anyone know of this being done? Any opinions appreciated.






RE: Punching shear repair by bonded brackets
Or possibly extend plates or channels down the sides of the columns to allow more room to bolt into the column. If channels on the column faces were to extend all the way down to the next floor, you could then simply direct-transfer the loads down the columns with no significant bolting.
RE: Punching shear repair by bonded brackets
Also, if the slab does fail in punching shear imagine the shape of detached slab in figuring your bracket contact area to the bottom face of slab... you will most likely find that you need to get your bracket bearing pretty far out from the column face.
RE: Punching shear repair by bonded brackets