Compressive Strength Prediction of Square Concrete Columns Retrofitted with External Steel Collars

Authors

  • Pudjisuryadi, P. Ph.D. Candidate, Department 0f Civil Engineering, Sepuluh Nopember Institute of Technology (ITS), Surabaya, INDONESIA and Department of Civil Engineering, Petra Christian University, Surabaya
  • Tavio . Department of Civil Engineering, Sepuluh Nopember Institute of Technology (ITS)

:

https://doi.org/10.9744/ced.15.1.18-24

Keywords:

Analytical model, external confinement, peak strength, square concrete columns

Abstract

Transverse confining stress in concrete members, commonly provided by transverse reinforcement, has been recognized to enhance strength and ductility. Nowadays, the confining method has been further developed to external confinement approach. This type of confinement can be used for retrofitting existing concrete columns. Many external confining techniques have been proven to be successful in retrofitting circular columns. However, for square or rectangular columns, providing effective confining stress by external retrofitting method is not a simple task due to high stress concentration at column’s corners. This paper proposes an analytical model to predict the peak strength of square concrete columns confined by external steel collars. Comparison with the experimental results showed that the model can predict the peak strength reasonably well. However, it should be noted that relatively larger amount of steel is needed to achieve comparable column strength enhancement when it is compared with those of conve tional internally-confined columns.

References

Sheikh, S.A., A Comparative Study on Confinement Models. ACI Journal, 79(4), July-Aug. 1982, pp. 296-306.

Mander, J.B., Priestley, M.J.N. and Park, R., Theoretical Stress-Strain Model for Confined Concrete, Journal of Structural Engineering, ASCE, 114(8), Aug. 1988, pp. 1824-1826.

Mander, J. B., Priestley, M.J.N., and Park, R., Observed Stress-Strain Behavior of Confined Concrete, Journal of Structural Engineering, ASCE, 114(8), Aug. 1988, pp. 1827-1849.[CrossRef]

Saatcioglu, M. and Razvi, S.R., Strength and Ductility of Confined Concrete, Journal of Structural Engineering, ASCE, 118(6), June 1992, pp. 1590-1607.[CrossRef]

Tavio, Budiantara, I N., and Kusuma, B., Spline Nonparametric Regression Analysis of Stress-Strain Curve of Confined Concrete, Civil Engineering Dimension, Petra Christian University, 10(1), Mar. 2008, pp. 14-27.

Tavio and Tata A., Predicting Nonlinear Behavior and Stress-Strain Relationship of Rectangular Confined Concrete Columns with ANSYS, Civil Engineering Dimension, 11(1), Mar. 2009, pp. 23-31.

Tavio, Wimbadi, I., Negara, A.K., and Tirtajaya, R., Effect of Confinement on Interaction Diagrams of Square Reinforced Concrete Columns, Civil Engineering Dimension, 11(2), Sept. 2009, pp. 78-88.

Tavio and Kusuma, B., Stress-Strain Model for High-Strength Concrete Confined by Welded Wire Fabric, Journal of Materials in Civil Engineering, ASCE, Discussion, 21(1), Jan. 2009, pp. 40–45.

Tavio, Kusuma, B., and Suprobo, P., Experimental Behavior of Concrete Columns Confined by Welded Wire Fabric as Transverse Reinforcement under Axial Compression, ACI Structural Journal, 109(3), May-June 2012, pp. 339-348.

Pudjisuryadi, P., Tavio, and Suprobo, P., Analytical Confining Model of Square Reinforced Concrete Columns using External Steel Collars, International Journal of ICT-aided Architecture and Civil Engineering, SERSC (accepted for publication in June 2013 issue).

Chai, Y.H., Priestley, M.J.N., and Seible, F., Analytical Model for Steel-Jacketed RC Circular Bridge Columns, Journal of Structural Engineering, ASCE, 120(8), Aug. 1994, pp. 2358-2376.[CrossRef]

Saafi, M., Toutanji, H.A., and Li, Z., Behavior of Concrete Columns Confined with Fiber-Reinforced Polymer Tubes, ACI Material Journal, 96(4), July-Aug. 1999, pp. 500-509.

Fam, A.Z. and Rizkalla, S.H., Confinement Model for Axially Loaded Concrete Confined by Circular Fiber-Reinforced Polymer Tubes, ACI Structural Journal, 98(4), July-Aug. 2001, pp. 541-461.

Carey, S. A. and Harries, K. A., Axial Behavior and Modeling of Confined Small-, Medium-, and Large-Scale Circular Sections with Carbon Fiber-Reinforced Polymer Jackets, ACI Structural Journal, 102(4), July-Aug. 2005, pp. 596-604.

Xiao, Y. and Wu, H., Retrofit of Reinforced Concrete Columns using Partially Stiffened Steel Jackets, Journal of Structural Engineering, ASCE, 129(6), June 2003, pp. 725-732.[CrossRef]

Hussain, M.A. and Driver, R.G., Experimental Investigation of External Confinement of Reinforced Concrete Columns by Hollow Structural Section Collars, ACI Structural Journal, 102(2), Mar.-Apr. 2005, pp. 242-251.

Lee, C.S., Hegemier, G.A., and Phillipp, D.J., Analytical Model for Fiber-Reinforced Polymer-Jacketed Square Concrete Columns in Axial Compression, ACI Structural Journal, 107(2), Mar.-Apr. 2010, pp. 208-217.

Tabsh, S.W., Stress-Strain Model for High-Strength Concrete Confined by Welded Wire Fabric, Journal of Materials in Civil Engineering, ASCE, 19(4), Apr. 2007, pp. 286-294.[CrossRef]

Hoshikusuma, J., Kawashima, K., Nagaya, K., and Taylor, A. W., Stress-Strain Model for Confined Reinforced Concrete in Brigde Piers, Journal of Structural Engineering, ASCE, 123(5), May 1997, pp. 624-633.[CrossRef]

Panitia Teknik 1729, Tata Cara Perencanaan Struktur Baja untuk Bangunan Gedung (SNI 03-1729-2002), Badan Standarisasi Nasional (BSN), Indonesia, 2002, 184 pp.

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How to Cite

P., P., & ., T. (2013). Compressive Strength Prediction of Square Concrete Columns Retrofitted with External Steel Collars. Civil Engineering Dimension, 15(1), 18-24. https://doi.org/10.9744/ced.15.1.18-24

Issue

Vol. 15 No. 1 (2013): MARCH 2013

Section

Articles

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