huangyhg

carbon fiber retrofitting
avonr!
is this a structural column? fiber carbon composites, as far as i know, are used in microstructures. never heard of using them in buildings. they should be so expensive, aren't they?
carbon fiber has been used with concrete columns for some time, but i haven't seen the cfrp used with steel. probably because it is cheaper to encase the steel column in concrete or just replace them if possible using cribbing and false work to support the framing beams.
on the other hand, if this application is some sort of clean area or an area where it would be impossible to have concrete or falsework then maybe...
as for design aids check out hexcel-fyfe on the internet and see if they have a website with product literature. at one time they did have information available, however, i'm not sure if it pertains to steel columns.
look up m-brace, they may have a product that meets your need.
received this reply from one of my classmates:
as far as the bridge is concerned i think you are talking about the so called smart bridge at headingly. it was built with technology from isis & dr. sami rizzkalla from u of m. i think the contractor was kraft but not sure. if you can find isis web site no doubt they will tell you about it.
other bridges have been built using frp glulam but mostly in wash./oregon states. company in b.c. bought the rights and sells in japan also.
as qshake said, cfrp has been used for quite some time in buildings and bridge structures, but mostly with concrete. i would be careful in using it in conjunction with steel only, though it might work fine. i would check strain compatibility first, as this system must have complete interaction to be effective.
my experience has only been in bridge repair and dynamic building repairs, both with prestressed concrete.
many carbon fiber composite products work similarly to what you are contemplating. check with one of the composity flagpole manufacturers. they might have something.
otherwise, contact sika for their cf repair info (

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