Built up section modeling
Built up section modeling
(OP)
I have a tough question on a project I am working on. We are using concrete pile foundation with shorecrete wall to retaining soils. Retaining height varies from 8ft to 25ft....I am using 24'' to 30'' concrete pile with steel W beam in the middle. Basically it is a soldier pile but it is not temporary.
There are huge moments at the base (assuming it is a cantilever columns embeded into soils). Steel beam is very large if considering steel bending capacity only. I am thinking to use the composite section but do not know how to model this section in SAP2000.
Does any engineer here know how to model concrete pile section with W beam in the middle? Thank you very much.
There are huge moments at the base (assuming it is a cantilever columns embeded into soils). Steel beam is very large if considering steel bending capacity only. I am thinking to use the composite section but do not know how to model this section in SAP2000.
Does any engineer here know how to model concrete pile section with W beam in the middle? Thank you very much.






RE: Built up section modeling
RE: Built up section modeling
RE: Built up section modeling
You would be surprised how resourceful contractors can be in securing permission to install tie-backs. I once had a project with a 4-story deep excavation and the adjoining property owners refused to allow tie-backs. We designed the excavation shoring using a cross-lot bracing system. The contractor obviously hated the bracing because it complicated his construction sequences. So he negotiated the rights to install the tie-backs with the neighboring property owners and kept increasing his offer until they said yes. It still ended up being cheaper than the braced option. Public agencies deal with easements all the time, so it might not be as impossible as you would think if you have the right connections and political savvy.
RE: Built up section modeling
RE: Built up section modeling
RE: Built up section modeling
Mike McCann
McCann Engineering
RE: Built up section modeling
you can freeze the ground big bucks....
soil nails may be an option depending on the geotech conditions, unless your right against the property line.
RE: Built up section modeling
The retaining wall is part of the building (five stories total). We are planing to use 10'' concrete mat foundation. I think soil capacity shall be ok if we following flat pole design to get embedment (could be 50ft or more embedment) by putting piles at 8'-0'' o.c. W beam is W24x250 if no composite section.
What is raker system??? I do not have idea for that.
Yes, it is a pain.......Feel so bad.
RE: Built up section modeling