Steel Post Embedded in Drilled Shat
Steel Post Embedded in Drilled Shat
(OP)
Is anyone aware of a good reference discussing the ability of a steel structural member to provide the needed reinforcing in a drilled shaft? I am working on a noise wall project and I have details from a previous project that show the only steel in the shaft is a w-section. These are cantilever type posts/piles so lateral wind loads are reacted by lateral soil forces. Any help would be great!






RE: Steel Post Embedded in Drilled Shat
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: Steel Post Embedded in Drilled Shat
My initial thought was to use the steel in the same manner that you suggested. However, the bending moment in the pile is significantly higher than the yield capacity of the steel post so composite action appears to be needed. Mechanically speaking though, I only see this possible through the use of shear studs or some other method of "bonding" the concrete to the structural steel.
RE: Steel Post Embedded in Drilled Shat
RE: Steel Post Embedded in Drilled Shat
This has me wondering if I understand your situation accurately. Does not your peak moment occur near grade, where you'd be dealing with the bare steel section moment capacity regardless?
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: Steel Post Embedded in Drilled Shat
RE: Steel Post Embedded in Drilled Shat
RE: Steel Post Embedded in Drilled Shat
RE: Steel Post Embedded in Drilled Shat
With un-reinforced concrete, and giving due consideration to placement tolerances, sacrificial cover etc, it seems to me that composite behavior might not push your center of compression out all that much further out than the flange anyhow. But, then, I haven't run any numbers and I don't know your proposed sizes.
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.