Title:
Damage-Based Stress-Strain Model for
Fiber-Reinforced Polymer-Confined Concrete
Author(s):
Domingo A. Moran and Chris P. Pantelides
Publication:
Structural Journal
Volume:
102
Issue:
1
Appears on pages(s):
54-61
Keywords:
column; ductility; rehabilitation
DOI:
10.14359/13530
Date:
1/1/2005
Abstract:
A damage-based stress-strain model applicable for both bonded or nonbonded fiber-reinforced polymer (FRP) confined concrete is developed for predicting the compressive behavior of circular FRP-confined concrete members. The model is based on a variable Poisson’s ratio formulation. The variable secant and tangent Poisson’s ratios used in the model are a function of the mechanical properties of the unconfined concrete and confining FRP jacket, and the extent of internal damage in the confined concrete core. Equilibrium and strain compatibility are used to obtain the ultimate compressive strength and strain of FRP-confined concrete as a function of confining stiffness and radial strain in the FRP jacket.