Precast Beam Beam to Column Connection
Precast Beam Beam to Column Connection
(OP)
Please see attached typical detail below.
My question is the following.
Is the idea in terms of the support of the beam, for its bearing area to be that of the precast beam supported on the corbel, or is the corbel just to support the beam until the cast-in-place closure is poured?
If that is the case is the reaction from the beam considered centered in the column because of a compression strut or is it through shear friction between the precast beam and the cast-in-place pour?
My question is the following.
Is the idea in terms of the support of the beam, for its bearing area to be that of the precast beam supported on the corbel, or is the corbel just to support the beam until the cast-in-place closure is poured?
If that is the case is the reaction from the beam considered centered in the column because of a compression strut or is it through shear friction between the precast beam and the cast-in-place pour?






RE: Precast Beam Beam to Column Connection
RE: Precast Beam Beam to Column Connection
RE: Precast Beam Beam to Column Connection
But still, I'm still wondering about the cold joint between the precast beam and the pour. Is shear friction along that surface worth checking?
RE: Precast Beam Beam to Column Connection
You will find that the sloped portion of the beam end is there to generate a compression strut for shear transfer.
RE: Precast Beam Beam to Column Connection
BA
RE: Precast Beam Beam to Column Connection
RE: Precast Beam Beam to Column Connection
Another question. How would I go about determining how much of the reaction is transfered in shear to the cast-in-place pour and ultimately to the column, how much is transferred through the compression strut, and how much is transferred to the corbel?
Thanks for all your replies.
RE: Precast Beam Beam to Column Connection
The detail shown is just a concept, and our comments have been in relation to the way it is drawn. If it is to scale, then I wouldn't allow for any contribution by the tiny corbels (in the finished structure). You would have to consider this detail in relation to what happens in the other direction. As shown, it looks like this is just a beam and column connection, but the top slab doesn't look thick enough to span far, so is this a beam and joist system?
RE: Precast Beam Beam to Column Connection
This is what I mean.
RE: Precast Beam Beam to Column Connection
BA