Grade Beam to Pile Torsion Connection
Grade Beam to Pile Torsion Connection
(OP)
I've got a pile supported grade beam that is predominantly loaded in torsion. From a constructability perspective, I desperately want to use stirrup arrangment "B" in the sketch below. However, in thinking through the load path using strut and tie logic, I can see no way to avoid using stirrup arrangement "A".

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.
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: Grade Beam to Pile Torsion Connection
RE: Grade Beam to Pile Torsion Connection
I'm with A all the way
RE: Grade Beam to Pile Torsion Connection
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: Grade Beam to Pile Torsion Connection
That may not be the most accurate way to look at your situation....but no stirrups at such a connection would unnerve me a bit.
RE: Grade Beam to Pile Torsion Connection
Some of what would have had to happen within the joint in a beam-column joint can take place beside the joint instead. It introduces some eccentricities but those are easily handled. At least, I think that's the case. It does unnerve me a bit too.
The trouble is that, with a circular pile, one has almost no control over where the vertical reinforcement will land. Planning a dense arrangement of stirrups right over top of the pile is asking a lot in the field.
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: Grade Beam to Pile Torsion Connection
Long live headed dowels. Imagine hooks up there.