Double Angle bolted connection to existing concrete column
Double Angle bolted connection to existing concrete column
(OP)
I am wanting to design a double Angle connection to carry a new W12x26 that is bolted to the new steel beam and bolted to an existing 16"x16" concrete column (expansion or epoxied anchors). My question is on the design of the anchorage to concrete. Can a double Angle all bolted connection be treated as a simple connection in this instance, ignoring any moment at the connection similar to the simple shear connections in AISC? If not are there some examples on how to determine the tensile load on the concrete anchored bolts. How do I determine the stress distribution to the bolts and angles. The plan is to use a double Angle connection with n=3. The beam is lightly loaded with max reaction of 4 kips. Is this type of connection typical or is there another connection type like a shelve Angle that is preferred in this kind of a scenario. Thanks






RE: Double Angle bolted connection to existing concrete column
And I'm guessing you have a slab on top which will act to restrain the beam from rotating away from the face of the column, pure shear seems safe to me.
RE: Double Angle bolted connection to existing concrete column
Thaidavid
RE: Double Angle bolted connection to existing concrete column
For relatively light loads, you might get some rotational slip out of your horizontally slotted holes too. With heavy reactions, they'll bind up.
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: Double Angle bolted connection to existing concrete column
I haven't run numbers or looked at the catalogs/software, but an example would be: Use 2 rows 5/8" has rod Hilti Hit-HY 200 epoxy adhesive @ 6"oc. Embed 6" into concrete. Total 4 anchors per connection.