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Keywords: reinforced concrete column, retrofit, strengthening, steel jacketing, finite element.

Summary

There are different strengthening techniques for reinforced concrete (RC) columns; the more widely used being concrete jacketing, composite-based strengthening systems (FRP) and the use of steel jacketing.

Steel jacketing is one of the most common strengthening technique [1,2]. In Europe, one of the most common strengthening techniques is based on the use of steel angles and strips [3,4]

This paper presents the development of some numerical models based on the results of laboratory tests performed on axially loaded RC columns strengthened with steel angles and strips [5]. These numerical models developed with ANSYS code [6] consider the nonlinearity of the building materials and the effects of the contact interfaces between different materials [7].

The results of the finite element models accurately describe the general behaviour of the strengthened columns.

This study allows engineers to assess the relative importance of the mechanisms acting on the strengthened RC columns. Design recommendations are also provided in this paper.

References

1: Tamai S., Sato T., Okamoto M., "Hysteresis model of steel jacketed RC columns for railway viaducts", Proceedings of the 16th Congress of IABSE, Lucerne, 2000.
2: Wu Y.F., Liu T., Oehlers D.J., "Fundamental principles that govern retrofitting of reinforced concrete columns by steel and FRP jacketing", Advances in Structural Engineering, 9(4):507-533, 2006. doi:10.1260/136943306778812769
3: Cirtek L. "RC columns strengthened with bandage - experimental programme and design recommendations", Construction and Building Materials, 15:341-349, 2001. doi:10.1016/S0950-0618(01)00015-0
4: Ramírez J.L., "Ten concrete column repair methods", Construction and Building Materials, 10(3):195-202, 1996. doi:10.1016/0950-0618(95)00087-9
5: Calderón P.A., Giménez E., Adam J.M., Ivorra S. "Full scale testing of RC columns strengthened with steel angles and battens", Structural Faults and Repair, Engineering Technics Press, Edinburgh, 2006.
6: ANSYS theory reference 9.0. ANSYS Inc., 2004.
7: Adam J.M., Calderón P.A., Giménez E., Hidalgo C., Ivorra S. "A study of the behavior of the cement mortar interface in reinforced concrete columns strengthened by means of steel angles and strips", Structural Faults and Repair, Engineering Technics Press, Edinburgh, 2006.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 86 PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: B.H.V. Topping Paper 175 Numerical and Experimental Study of RC Columns Strengthened by Steel Jacketing J.M. Adam¹, S. Ivorra², E. Giménez¹, P.A. Calderón¹ and F.J. Pallarés¹ ¹Instituto de Ciencia y Tecnología del Hormigón, Polytechnic University of Valencia, Spain ²Departamento de Ingeniería de la Construcción, O.P. e Infraestructuras Urbanas, University of Alicante, Spain doi:10.4203/ccp.86.175 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Numerical and Experimental Study of RC Columns Strengthened by Steel Jacketing", in B.H.V. Topping, (Editor), "Proceedings of the Eleventh International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 175, 2007. doi:10.4203/ccp.86.175 Keywords: reinforced concrete column, retrofit, strengthening, steel jacketing, finite element. Summary There are different strengthening techniques for reinforced concrete (RC) columns; the more widely used being concrete jacketing, composite-based strengthening systems (FRP) and the use of steel jacketing. Steel jacketing is one of the most common strengthening technique [1,2]. In Europe, one of the most common strengthening techniques is based on the use of steel angles and strips [3,4] This paper presents the development of some numerical models based on the results of laboratory tests performed on axially loaded RC columns strengthened with steel angles and strips [5]. These numerical models developed with ANSYS code [6] consider the nonlinearity of the building materials and the effects of the contact interfaces between different materials [7]. The results of the finite element models accurately describe the general behaviour of the strengthened columns. This study allows engineers to assess the relative importance of the mechanisms acting on the strengthened RC columns. Design recommendations are also provided in this paper. References 1 Tamai S., Sato T., Okamoto M., "Hysteresis model of steel jacketed RC columns for railway viaducts", Proceedings of the 16th Congress of IABSE, Lucerne, 2000. 2 Wu Y.F., Liu T., Oehlers D.J., "Fundamental principles that govern retrofitting of reinforced concrete columns by steel and FRP jacketing", Advances in Structural Engineering, 9(4):507-533, 2006. doi:10.1260/136943306778812769 3 Cirtek L. "RC columns strengthened with bandage - experimental programme and design recommendations", Construction and Building Materials, 15:341-349, 2001. doi:10.1016/S0950-0618(01)00015-0 4 Ramírez J.L., "Ten concrete column repair methods", Construction and Building Materials, 10(3):195-202, 1996. doi:10.1016/0950-0618(95)00087-9 5 Calderón P.A., Giménez E., Adam J.M., Ivorra S. "Full scale testing of RC columns strengthened with steel angles and battens", Structural Faults and Repair, Engineering Technics Press, Edinburgh, 2006. 6 ANSYS theory reference 9.0. ANSYS Inc., 2004. 7 Adam J.M., Calderón P.A., Giménez E., Hidalgo C., Ivorra S. "A study of the behavior of the cement mortar interface in reinforced concrete columns strengthened by means of steel angles and strips", Structural Faults and Repair, Engineering Technics Press, Edinburgh, 2006. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £120 +P&P)
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