which stiffness of piles is used in engieneering?
which stiffness of piles is used in engieneering?
(OP)
I am going to do some research work on piles' stiffness. would you tell me ,in th engineering,which stiffness, initial stiffness or the secant siffness under design load, is used more frequently? and in what situations are they used,respectively?





RE: which stiffness of piles is used in engieneering?
There is no simple answer.
What are you trying to research, anyway?
RE: which stiffness of piles is used in engieneering?
My goal is trying to get a practical method to calculate the axial stiffness of single pile in sand.
thanks for reply.
RE: which stiffness of piles is used in engieneering?
Also look in the book, Offshore Engineering, and read the chapter on axial pile design by Focht & Kraft. Focht wrote the practical part; Kraft wrote the theoretical part. (You will understand when you read it.) Kraft's work is good, just a little too specific for me. Things change over time. But it is probably far more detailed than you want...
No, I did not co-author the chapter. But I know the guy who did!
RE: which stiffness of piles is used in engieneering?
Of course easy to say, but lots of work to execute. Still it may be necessary to determine potential problems....
RE: which stiffness of piles is used in engieneering?
By the way, My book citation was wrong - it's Planning and Design of Fixed Offshore Platforms edited by Bramlette McClelland and Michael D. Reifel. Look at Chapter 21 for pile stiffness considerations -