Experimental and Numerical Model of Interior Reinforced Concrete Beam–Column Joints Strengthened with Carbon Fiber-Reinforced Polymer Sheets
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The present study involves full-scale experimental test and numerical model of interior reinforced concrete beam–column joints strengthened by carbon fiber-reinforced polymer (CFRP) sheets. The present study proposes a novel strengthening technique for interior beam–column joints. The experimental test intends to achieve a fundamental understanding of the behavior of interior joint strengthened by CFRP wrap in columns region with L-shape overlays on the top and bottom of beams. The purpose of implementing this system is to transfer the failure of the columns regions to the beams regions. This technic is a feasible economic solution. Hence, two beam column joints were made and tested. One interior joint was tested in an unstrengthened condition to act as the control joint. A numerical simulation based on plastic damage model by ABAQUS software was carried out to validate the experimental results. The CFRP wrap mechanism prevented the development of cracks in the joint. The length of cracks decreased because CFRP sheets were applied. The average decrease was approximately 37% of the crack length of the control beam–column joint. It is observed that the compression strut zone was increased by the application of CFRP wrap in the column zone.
KeywordsCarbon fibre reinforced polymer Beam-column joints Strengthening Reinforced concrete
This work received financial support from the Ministry of Higher Education of Malaysia under FRGS Research Projects No. 5524748. This support is gratefully acknowledged.
Compliance with Ethical Standards
Conflict of interest
The authors declare that there is no conflict of interest regarding the publication of this article.
- Bsisu K, Hiari B (2015) Finite element analysis of retrofitting techniques for reinforced concrete beam–column joint. J Am Sci 11(8):48–56Google Scholar
- Deaton JB (2013) Nonlinear finite element analysis of reinforced concrete exterior beam-column joints with nonseismic detailing. Doctoral dissertation, Georgia Institute of TechnologyGoogle Scholar
- Del Vecchio C, Di Ludovico M, Balsamo A, Prota A, Manfredi G, Dolce M (2014) Experimental investigation of exterior RC beam–column joints retrofitted with FRP systems. J Compos Constr 18(4):1–13Google Scholar
- Nakaba K, Kanakubo K, Furuta T, Yoshizawa K (2001) Bond behavior between fiber reinforced polymer laminates and concrete. ACI Struct J 98:359–367Google Scholar
- Rahimipour A, Hejazi F, Vaghei R, Jaafar M (2016) Finite element development of a beam–column connection with CFRP sheets subjected to monotonic and cyclic loading. Comput Concr Int J 18(6):083–1096Google Scholar
- Santarsiero G (2018) FE modelling of the seismic behavior of wide beam–column joints strengthened with CFRP systems. Buildings 8(31):2–14Google Scholar
- Shahbazpanahi S, Ali AA, Aznieta F, Kamgar A, Farzadnia N (2012) A simple method to model crack propagation in concrete. Constr J 13(1):41–50Google Scholar
- Shahbazpanahi S, Ali AA, Aznieta FN, Kamgar A, Farzadnia N (2013b) Modelling of the fracture process zone to improve the crack propagation criterion in concrete. J S Afr Inst Civ Eng 55(3):2–9Google Scholar
- Shahbazpanahi S, Hejazi F, Paknahad M, Rahimipour A, Nassimi M (2018) Modeling crack propagation in RC beam–column joints. Tehnički Vjesnik - Tehnical Gazette (in press) Google Scholar