Title:
Structural Analysis of Pretensioned Concrete Piles
Author(s):
William L. Gamble
Publication:
Symposium Paper
Volume:
295
Issue:
Appears on pages(s):
1-16
Keywords:
Pretensioned concrete; pretensioned piles; reinforced concrete; moment-thrust interaction; φ-factors; length effects; P –Δ effects.
DOI:
10.14359/51686349
Date:
10/4/2013
Abstract:
The structural analysis of prestressed concrete piles is similar to the analysis of reinforced concrete columns in many respects but there are important detail differences. The construction of the M – P (moment-thrust interaction) curve requires consideration of the stress-strain curve for strand and of the substantial initial strains in the steel and concrete. When considering length effects, it will be found that much of the length of a prestressed pile will remain uncracked, which contributes significantly to its stability against buckling.