pre-stressed stayed columns

[agaynor]

Hi all -
This is my first post here. I've spent some time looking thru old posts, but nothing:
here's my question-
I'm looking for the formula to calculate the first 2 critical loads for a prestressed column ('diamond' cable stays / central lateral strut / slender column)
I'm working off this paper I have "stability analysis and parametric study of pre-stressed stayed columns" by Chan et al, 2000.... really riveting stuff and all! and there is some hand-waiving on the included example problems.

I think the answer may be in 'Eurocode' or maybe even in Roarks?...both of which I dont have access to right now!
anyone with any direction here would help me out greatly before I get too much more grey hairs on this one.

Google seems to be leaving me high and dry on this one.

oh - this is for a FE validation/geometry sheet I am putting together for racing sailboats applications-

Thanks in advance -

 

[csd72]

I think its your terminology.

Try these google results for post tensioned (i.e. the stressing is done after fabrication).

http://www.google.com/search?q=post...ss&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7GGLG

 

[agaynor]

thanks for that info csd72 -

this link may better explain the structure I am look at.

http://files.engineering.com/getfil...478c-9511-378ea33a722a&file=STAYED_COLUMN.JPG