Structural Analysis of Pretensioned Concrete Piles


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Title: Structural Analysis of Pretensioned Concrete Piles

Author(s): William L. Gamble

Publication: Special Publication

Volume: 295


Appears on pages(s): 1-16

Keywords: Pretensioned concrete; pretensioned piles; reinforced concrete; moment-thrust interaction; φ-factors; length effects; P –Δ effects.

Date: 10/4/2013

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.