Predicting the Strength of Rectangular Reinforced Concrete Columns Confined with FRP Sheets

Abstract:

A complete reorganization about the behavior of rectangular RC columns confined with FRP sheet is very important to predict the axial compressive strength values of the strengthened rectangular RC columns. That is because the process of strengthening RC rectangular column depending on several parameters that role this type of strengthening. These parameters include the characteristics of the used fiber, the grade of concrete and the geometry of the cross section including the rectangularity aspect ratio, corner radius, and size of specimens. Besides that, using a wide scope of experimental data may affect positively to generalize a model that considers the whole parameters affect the value of the axial strength. So, in this paper a review about parameters that affect the axial compressive strength values of rectangular RC columns was conducted. After that, based on the test results regarding FRP-confined rectangular RC columns available in the literature or conducted by the author, some existing confinement models for rectangular RC columns were assessed. Further, a new model is proposed through regression analysis of the database. A new model is proposed through regression analysis of the database. The proposed model was found to be in good agreement with the test results in the database. Finally, based on the results conclusions were drawn.

• Periodical: Key Engineering Materials (Volume 906)
• Pages: 17-23
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.906.17
• Online since: January 2022
• Authors: Ashot G. Tamrazyan, Yehia A.K. Sayed*
• Keywords: Analytical Models, Axial Compressive Strength, FRP Sheets, Rectangular RC Columns

References

[1] Tamrazyan A. Avetisyan L. Comparative analysis of analytical and experimental results of the strength of compressed reinforced concrete columns under special combinations of loads. MATEC Web Conf 2016;86:статья № 01029.

DOI: 10.1051/matecconf/20168601029

[2] Tamrazyan A. Popov D. Reduce of bearing strength of the bent reinforce-concrete elements on a sloping section with the corrosive damage of transversal armature. MATEC Web Conf 2017;117:статья № 00162.

DOI: 10.1051/matecconf/201711700162

[3] Tamrazyan A.G. Fedorova N.K. Reliability assessment of reinforced concrete structures, strengthening by external reinforcement with carbon fiber. Izv Vyss Uchebnykh Zaved Seriya Teknol Tekst Promyshlennosti 2016:226–30.

[4] Abd-El-Rahman Megahid Ahmed Omar A.Farghal Yehia A.K. Behavior of R.C rectangular columns confined with CFRP sheets under axial compression. International Conference on Advances in Structural and Geotechnical Engineering 2017;17: ICASGE'17 Hurghada, Egypt.

[5] Yehia A. Kotp Omar A. Farghal Mohammed F. M. Fahmy. Behavior of rectangular RC columns confined with BFRP sheets subjected to axial loading. International Journal of Engineering Development and Research IJEDR 2018; 6:215–30.

[6] Pessiki S, Harries KA, Kestner JT, Sause R, Ricles JM. Axial behavior of reinforced concrete columns confined with FRP jackets. J Compos Constr 2001;5:237–45.

DOI: 10.1061/(asce)1090-0268(2001)5:4(237)

[7] Ilki A, Peker O, Karamuk E, Demir C, Kumbasar N. Axial Behavior of RC Columns Retrofitted With Frp Composites. Adv Earthq Eng Urban Risk Reduct 2006:301–16. https://doi.org/10.1007/1-4020-4571-9_20.

DOI: 10.1007/1-4020-4571-9_20

[8] Wang Z, Wang D, Smith ST, Lu D. CFRP-Confined Square RC Columns. I: Experimental Investigation. J Compos Constr 2012;16:150–60. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000245.

DOI: 10.1061/(asce)cc.1943-5614.0000245

[9] Rocca S, Galati N, Nanni A. Experimental evaluation of FRP strengthening of large size reinforced concrete columns. Cent Infrastruct Eng Stud (CIES), Rep (2006).

[10] Kumutha R, Vaidyanathan R, Palanichamy MS. Behaviour of reinforced concrete rectangular columns strengthened using GFRP. Cem Concr Compos 2007;29:609–15. https://doi.org/10.1016/j.cemconcomp.2007.03.009.

DOI: 10.1016/j.cemconcomp.2007.03.009

[11] Wang YC, Hsu K. Design of FRP-wrapped reinforced concrete columns for enhancing axial load carrying capacity. Compos Struct 2008;82:132–9. https://doi.org/10.1016/j.compstruct.2007.04.002.

DOI: 10.1016/j.compstruct.2007.04.002

[12] El Maaddawy T, El Sayed M, Abdel-Magid B. The effects of cross-sectional shape and loading condition on performance of reinforced concrete members confined with carbon fiber-reinforced polymers. Mater \& Des 2010;31:2330–41.

DOI: 10.1016/j.matdes.2009.12.004

[13] Toutanji H, Han M, Gilbert J, Matthys S. Behavior of Large-Scale Rectangular Columns Confined with FRP Composites. J Compos Constr 2010;14:62–71. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000051.

DOI: 10.1061/(asce)cc.1943-5614.0000051

[14] Chen PC, Lin ML, Wu YH. Axial Performance of Various Strengthening Methods Applied on Full-Scale Rectangular RC Columns. Appl. Mech. Mater., vol. 82, 2011, p.618–23.

DOI: 10.4028/www.scientific.net/amm.82.618

[15] Hadi MNS, Widiarsa IBR. Axial and flexural performance of square RC columns wrapped with CFRP under eccentric loading. J Compos Constr 2012;16:640–9.

DOI: 10.1061/(asce)cc.1943-5614.0000301

[16] De Luca A, Nardone F, Lignola GP, Prota A, Nanni A. Wall-like reinforced concrete columns externally confined by means of glass FRP laminates. Adv Struct Eng 2013;16:593–604. https://doi.org/10.1260/1369-4332.16.4.593.

DOI: 10.1260/1369-4332.16.4.593

[17] Raval R, Dave U. Behavior of GFRP wrapped RC columns of different shapes. Procedia Eng 2013;51:240–9. https://doi.org/10.1016/j.proeng.2013.01.033.

DOI: 10.1016/j.proeng.2013.01.033

[18] Triantafillou TC, Choutopoulou E, Fotaki E, Skorda M, Stathopoulou M, Karlos K. FRP confinement of wall-like reinforced concrete columns. Mater Struct Constr 2016;49:651–64. https://doi.org/10.1617/s11527-015-0526-5.

DOI: 10.1617/s11527-015-0526-5

[19] Li X, Lu J, Ding D-D, Wang W. Axial strength of FRP-confined rectangular RC columns with different cross-sectional aspect ratios. Mag Concr Res 2017;69:1011–26.

DOI: 10.1680/jmacr.17.00036

[20] Eid R, Paultre P. Compressive behavior of FRP-confined reinforced concrete columns. Eng Struct 2017;132:518–30. https://doi.org/10.1016/j.engstruct.2016.11.052.

DOI: 10.1016/j.engstruct.2016.11.052