Effect of Reinforced Concrete Jacketing on Axial Load Capacity of Reinforced Concrete Column
Abstract
Whenever a member of a structure becomes structurally deficient, it becomes vulnerable to the existing load and for the additional loads that it may be subjected to in the coming future. Since columns are the most important structural element, the structural retrofit of columns, relative to other structural elements is of prime importance. This study intends to investigate the performance and behaviour of an RC column jacketed with Reinforced Concrete columns under axial loads. The objective of this paper is to find out the efficiency of RC jacket in enhancing the strength of an existing RC column. A mathematical design based upon Indian Standards codes has been designed to identify the behaviour of jacketed RC columns. This has been followed by a finite element based numerical simulation using the same material properties as used in the process of designing. The simulation has been done in ABAQUS software with appropriate contact modelling. The analytical model considers that there is no bond slippage between the existing and new concrete surface i.e. the bond between the existing and new concrete is assumed to be perfect. This perfect bond between the surfaces has been modelled by using appropriate constraints in ABAQUS software. The finite element models show fair agreement with the designed values in terms of ultimate capacity and failure mode. The load bearing capacity enhancement of the RC jacketed column has been found to increase substantially. The enhancement capacity results obtained from the finite element software differs about 16-25% from the design values.
Keywords
References
Júlio, E S, F Branco, and V D Silva. “Structural Rehabilitation of Columns with Reinforced Concrete Jacketing.” Progress in Structural Engineering and Materials 5, no. 1 (January 2003): 29–37. doi:10.1002/pse.140.
Waghmare, Shri Pravin B. "Materials and jacketing technique for retrofitting of structures." International Journal of Advanced Engineering Research and Studies 1, no. 1 (2011): 15-19.
Raza, Saim, Muhammad K. I. Khan, Scott J. Menegon, Hing-Ho Tsang, and John L. Wilson. “Strengthening and Repair of Reinforced Concrete Columns by Jacketing: State-of-the-Art Review.” Sustainability 11, no. 11 (June 9, 2019): 3208. doi:10.3390/su11113208.
Belal, Mahmoud F., Hatem M. Mohamed, and Sherif A. Morad. “Behavior of Reinforced Concrete Columns Strengthened by Steel Jacket.” HBRC Journal 11, no. 2 (August 2015): 201–212. doi:10.1016/j.hbrcj.2014.05.002.
Sakino, Kenji, and Yuping Sun. "Steel jacketing for improvement of column strength and ductility." In Proceeding of 12th WCEE Conference. 2000.
Achillopoulou, D. V., T. C. Rousakis, and A. I. Karabinis. "Force transfer between existing concrete columns with reinforced concrete jackets subjected to axial loading." Proceeding of 15th WCEE Conference. 2012.
Campione, G., M. Fossetti, C. Giacchino, and G. Minafò. “RC Columns Externally Strengthened with RC Jackets.” Materials and Structures 47, no. 10 (July 19, 2013): 1715–1728. doi:10.1617/s11527-013-0146-x.
Vandoros, Konstantinos G., and Stephanos E. Dritsos. “Concrete Jacket Construction Detail Effectiveness When Strengthening RC Columns.” Construction and Building Materials 22, no. 3 (March 2008): 264–276. doi:10.1016/j.conbuildmat.2006.08.019.
Del Zoppo, Marta, Marco Di Ludovico, Alberto Balsamo, and Andrea Prota. “Comparative Analysis of Existing RC Columns Jacketed with CFRP or FRCC.” Polymers 10, no. 4 (March 24, 2018): 361. doi:10.3390/polym10040361.
Dritsos, Stephanos, and Jon Moseley. “Monolithic Coefficient Design Values for Seismically Strengthening RC Columns with Jackets.” Ce/papers 3, no. 2 (April 2019): 172–176. doi:10.1002/cepa.971.
Lampropoulos, A. P., and S. E. Dritsos. “Modeling of RC Columns Strengthened with RC Jackets.” Earthquake Engineering & Structural Dynamics 40, no. 15 (April 29, 2011): 1689–1705. doi:10.1002/eqe.1109.
“Seismic Load Tests on Reinforced Concrete Columns Strengthened by Jacketing.” ACI Structural Journal 91, no. 2 (1994). doi:10.14359/4593.
Beschi, C., A. Meda, and P. Riva. “Column and Joint Retrofitting with High Performance Fiber Reinforced Concrete Jacketing.” Journal of Earthquake Engineering 15, no. 7 (September 2011): 989–1014. doi:10.1080/13632469.2011.552167.
Kaliyaperumal, Gnanasekaran, and Amlan Kumar Sengupta. "Seismic retrofit of columns in buildings for flexure using concrete jacket." ISET Journal of Earthquake Technology 46, no. 2 (2009): 77-107.
Narayanan, VT Badari, Amlan Kumar Sengupta, and SR Satish Kumar. "Seismic retrofit of beams in buildings for flexure using concrete jacket." ISET journal of Earthquake Technology 46, no. 1-2, (2012):1-22.
Tayeh, Bassam A., Mohammed Abu Naja, Samir Shihada, and Mohammed Arafa. “Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing.” Advances in Civil Engineering 2019 (June 11, 2019): 1–16. doi:10.1155/2019/2987412.
Standard, Indian. "Plain and reinforced concrete-code of practice." New Delhi: Bureau of Indian Standards (2000).
BIS. IS 15988:2013 Seismic Evaluation and Strengthening of Existing Reinforced Concrete Buildings - Guidelines: pp. 1–25: (2013).
User, C. A. E. "ABAQUS 6.14 Analysis User Guide." Dassault System (2014).
DOI: 10.28991/cej-2020-03091546
Refbacks
- There are currently no refbacks.
Copyright (c) 2020 PRAVEEN ANAND
This work is licensed under a Creative Commons Attribution 4.0 International License.
