Title:
Computational Modeling of Aramid Fiber-Reinforced Polymer Prestressed Girder in Composite Action with Bridge Deck
Author(s):
Shobeir Pirayeh Gar, Monique Hite Head, and Stefan Hurlebaus
Publication:
Structural Journal
Volume:
110
Issue:
6
Appears on pages(s):
965-976
Keywords:
aramid fiber-reinforced polymer; composite action; computational modeling; concrete bridge girder; flexural performance; prestressing; sustainability.
DOI:
10.14359/51686152
Date:
11/1/2013
Abstract:
Aramid fiber-reinforced polymer (AFRP) tendons, which are inherently corrosion-resistant, can be used to replace steel prestressing strands in bridge girders to enhance bridge sustainability. Despite ongoing experimental research, there is a lack of uniformity and consistency in testing procedures, definitions of material characteristics, and results. Therefore, a robust computational model is needed to perform a refined nonlinear analysis of full-scale AFRP prestressed girders. This paper presents the development of a computational model to numerically evaluate the flexural behavior of an AASHTO I-girder (Type I) prestressed with AFRP tendons in comparison to its conventional prestressing steel counterpart. Numerical results match experimental test data with a high degree of accuracy and reveal that an AASHTO I-girder prestressed with AFRP meets service and strength limit states. Numerical results also show that the deflection equation in ACI 440.4R overestimates the maximum deflection of the AFRP prestressed girder.