Analytical and finite element studies on hybrid FRP strengthened RC column elements under axial and eccentric compression

Chellapandian, M and S, Suriya Prakash and Amirtham, Rajagopal (2018) Analytical and finite element studies on hybrid FRP strengthened RC column elements under axial and eccentric compression. Composite Structures, 184. pp. 234-248. ISSN 0263-8223

Full text not available from this repository. (Request a copy)


Analytical and finite element studies on the behavior of Reinforced Concrete (RC) column elements strengthened using a hybrid Carbon Fiber Reinforced Polymer (CFRP) laminates and externally bonded fabric is explored in this study. The main objective of this study is to evaluate the effect of hybrid strengthening on the initial and post-cracking stiffness, peak and post-peak behavior, and change in failure modes of RC column elements. Both axial and eccentric loads are considered in this study. Experimental program is carried out by testing the column elements with and without different FRP strengthening. Analytical predictions are obtained using the strain compatibility approach based on the existing constitutive models for unconfined and confined concrete, steel and FRP composites. A numerical model of column elements is developed using a commercial software ABAQUS. The predictions obtained from the analytical and FE analysis were validated with the experimental results. Analytical and FE predictions exhibited a fair correlation with discrepancy of less than 5% when compared to test results. A parametric study is carried out using the validated FE analysis by varying the CFRP fabric ratio, CFRP laminate ratio and their hybrid combinations. Hybrid strengthening technique is found to be more efficient in improving the initial and post-cracking stiffness, strength and ultimate displacement ductility of RC column elements under compression.

[error in script]
IITH Creators:
IITH CreatorsORCiD
S, Suriya Prakash
Amirtham, RajagopalUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Confined concrete, External bonding (EB), Finite element modelling, Hybrid FRP strengthening, Near surface mounting (NSM), RC column elements
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 16 Nov 2017 04:49
Last Modified: 16 Nov 2017 04:49
Publisher URL:
OA policy:
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 3671 Statistics for this ePrint Item