Nonlinear finite element analysis of short and long reinforced concrete columns confined with GFRP tubes. (July 2017)

• Record Type: Journal Article
• Authors: Hussein Abdallah, Maha; Shazly, Mostafa; Mohamed, Hamdy M; Masmoudi, Radhouane; Mousa, Ahmed
• Is Part Of: Journal of reinforced plastics and composites. Volume 36:Number 13(2017)
• Page Start: 972
• Page End: 987
• Publication Date: 2017-07
• Subjects: Finite element analysis -- concrete -- circular column -- fiber reinforced polymer tube -- modeling; Reinforced plastics -- Periodicals; Composite materials -- Periodicals; 620.1923
• DOI: 10.1177/0731684417698758
• Languages: English
• ISSNs: 0731-6844

Abstract

This paper presents three-dimensional nonlinear finite element models to understand the uniaxial behavior of concrete-filled fiber reinforced polymer tubes. A stress–strain confined model was introduced for the concrete, a damage criteria based on Hashin's failure model was used to model damage and failure of GFRP tubes, and steel bars were modeled based on classic metal plasticity model. A comparison between experimental results found in the literature and the finite element model was conducted regarding the load-deflection curves and the failure pattern of different test specimens. The model was found to be efficient in capturing the loads and deformations of slender concrete-filled fiber reinforced polymer tube columns. It was then used in a parametric study to understand the effect of different parameters (including fiber orientation, number of layers of (glass-fiber reinforced polymer) and steel reinforcement ratio) on the behavior of concrete-filled fiber reinforced polymer tube under axial compressive loading. It was observed that the behavior of the columns was greatly affected by the investigated analysis parameters.