Finite element analysis of rectangular reinforced concrete columns wrapped with FRP composites

14th International Conference on Concrete Engineering and Technology

Gora, Abdurra'Uf M.^1 ; Jaganathan, Jayaprakash^1 ; Anwar, M.P.^1 ; Alengaram, U Johnson^2

Department of Civil Engineering, University of Nottingham Malaysia, Malaysia^1

Faculty of Engineering, Department of Civil Engineering, University of Malaya, Kuala Lumpur, Malaysia^2

关键词: Eccentric loading;    Eccentrically loaded;    Fibre reinforced polymers;    Finite element analysis software;    Glass fibre reinforced polymers;    Rectangular RC columns;    Reinforced concrete column;    Three dimensional finite elements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/431/7/072005/pdf
DOI  :  10.1088/1757-899X/431/7/072005

来源: IOP

【 摘 要 】

Fibre reinforced polymer (FRP) wrapping of reinforced concrete (RC) columns has increasingly become the most suitable method used to strengthen and rehabilitate RC columns. It is clear that limited studies have investigated the behaviour of eccentrically loaded RC columns wrapped with FRP composites. In the present study, a three-dimensional finite element (FE) model was developed to simulate the behaviour of rectangular RC columns wrapped with glass fibre-reinforced polymer (GFRP) sheets under concentric and eccentric loading. The FE model was developed in the finite element analysis software ANSYS. The variables within the FE model are the number of GFRP layers and the magnitude of load eccentricity. The FE analysis results showed that GFRP wrapping significantly improved the performance of the strengthened columns by delaying concrete rupture. The presence of load eccentricity reduced the load carrying capacity and performance of the strengthened RC columns. The FE model correlated well with the stress distribution trends observed in the literature.