stiffness of piles

huangyhg

stiffness of piles
i want to model a pile in csi safe program.i define a column spring support and i need to calculate the stiffness of the pile .can anyone tell me how to calculate it?
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typically the geotech report will give an anticipated length of pile, capacity, and ancipated pile settlement under load.  with this information the pile stiffness is easily calculated using two parts:
1.  soil stiffness = pile capacity / ancitipate settlement
2.  actual pile stiffness = pl / ae with p being the pile capacity, l being the length, a being the pile area, and e being the grout or steel modulus depending on the type of pile being used.
add 1 and 2 and there is your total stiffness.  typically the first value alone is adequate as it far outways the second value.