Experimental Performance of RC Hollow Columns Confined with CFRP
Publication: Journal of Composites for Construction
Volume 11, Issue 1
Abstract
Column jacketing with fiber-reinforced polymer (FRP) composite materials has been extensively investigated in the last decade to address the issue of seismic upgrade and retrofit of existing reinforced concrete (RC) columns. Researchers have mainly focused their attention on solid columns, while very little research has been done on hollow columns strengthened with FRP. To study the behavior of noncircular hollow cross sections subjected to combined axial load and bending and to contribute to the comprehension of the resistant mechanisms present in FRP confinement, a total of seven specimens have been tested. The present work is the first step in a broader endeavor aimed at evaluating the benefits generated by a FRP wrapping, computing (P-M) interaction diagrams for hollow columns confined with FRP, and defining design criteria for the strengthening of these elements using composite jackets. The theoretical analyses will also assess under which conditions the standard approaches for columns with solid cross sections could be extended to the case of hollow columns.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writers would like to gratefully acknowledge the support of the Italian government in its funding of the research project M.I.TRAS. The FRP strengthening of the columns was supported by MAPEI Spa., Milan, Italy. The contribution of Messrs. Balsamo and Zaffaroni is acknowledged.
References
AASHTO. (2002). “Standard specifications for highway bridges.” 17th Ed., Washington, D.C.
Cheng, C.-T., Mo, Y. L., and Yeh, Y.-K. (2005). “Evaluation of as-built, retrofitted, and repaired shear-critical hollow columns under earthquake-type loading.” J. Bridge Eng., 10(5), 520–529.
Cosenza, E., and Prota, A. (2006). “Experimental behavior and numerical modelling of smooth steel bars under compression.” J. Earthquake Eng., 10(3), 313–329.
Eurocode 2. (1991). “Design of concrete structures: 1-1. General rules and rules for building.” ENV 1992-1-1, CEN (European Committee for Standardization), Brussels, 63–68.
Gergely, I., Pantelides, C. P., Nuismer, R. J., and Reaveley, L. D. (1998). “Bridge pier retrofit using fiber reinforced plastic composites.” J. Compos. Constr., 2(4), 165–174.
Karbhari, V. M., and Zhao, L. (2000). “Use of composites for 21st century civil infrastructure.” Comput. Methods Appl. Mech. Eng., 185(2), 433–454.
Li, J., and Hadi, M. N. S. (2003). “Behaviour of externally confined high-strength concrete columns under eccentric loading.” Compos. Struct., 62, 145–153.
Mander, J. B., Priestley, M. J. N., and Park, R. (1983). “Behavior of ductile hollow reinforced concrete columns.” New Zealand Nat. Soc. Earthquake Eng. Bull, 16(4), 273–290.
Mirmiran, A., and Shahawy, M. (1997). “Behavior of concrete columns confined by fiber composites.” J. Struct. Eng., 123(5), 583–590.
Mo, Y. L., and Nien, I. C. (2002). “Seismic performance of hollow high-strength concrete bridge columns.” J. Bridge Eng., 7(6), 338–349.
Mo, Y. L., and Yeh, Y.-K. (2004). “Seismic retrofit of hollow rectangular bridge columns.” J. Compos. Constr., 8(1), 43–51.
Osada, K., Yamaguchi, T., and Ikeda, S. (1999). “Seismic performance and the strengthening of hollow circular RC piers having reinforced cut-off planes and variable wall thickness.” Concrete Res. and Tech., 10(1), 13–24.
Pavese, A., Bolognini, D., and Peloso, S. (2004). “FRP seismic retrofit of RC square hollow section bridge piers.” J. Earthquake Eng., Special issue, 1(8), 225–250.
Pinto, A., Molina, J., and Tsionis, G. (2003). “Cyclic tests on large-scale models of existing bridge piers with rectangular hollow cross-section.” Earthquake Eng. Struct. Dyn., 32(13), 1995–2012.
Ranzo, G., and Priestley, M. J. N. (2000). “Seismic performance of large RC circular hollow columns.” Proc., 12th World Conf. on Earthquake Engineering, (CD-ROM), New Zealand Society for Earthquake Engineering, Auckland, New Zealand, Ref. 0250.
Rasulo, A., Bolognini, D., Pavese, A., and Calvi, G. M. (2002). “Shear behaviour of as-built RC hollow bridge piers.” Proc., 12th European Conf. on Earthquake Engineering, A. H. C. Chan, ed., New Zealand Society for Earthquake Engineering, Auckland, New Zealand, Ref. 798.
Saafi, M., Toutanji, H. A., and Li, Z. (1999). “Behavior of concrete columns confined with fiber reinforced polymer tubes.” ACI Mater. J., 96(4), 500–509.
Seible, F., Priestley, M. J. N., Hegemier, G. A., and Innamorato, D. (1997). “Seismic retrofit of RC columns with continuous carbon fiber jackets.” J. Compos. Constr., 1(2), 52–62.
Yeh, Y.-K., and Mo, Y. L. (2005). “Shear retrofit of hollow bridge piers with CFRP strips.” J. Compos. Constr., 9(4), 327–336.
Yeh, Y.-K., Mo, Y. L., and Yang, C. Y. (2002a). “Full-scale tests on rectangular hollow bridge piers.” Mater. Struct., 35, 117–125.
Yeh, Y.-K., Mo, Y. L., and Yang, C. Y. (2002b). “Seismic performance of rectangular hollow bridge columns.” J. Struct. Eng., 128(1), 60–68.
Yeh, Y.-K., Mo, Y. L., and Yang, C. Y. (2001). “Seismic performance of hollow circular bridge piers.” ACI Struct. J., 98(6), 862–871.
Zahn, F. A., Park, R., and Priestley, M. J. N. (1990). “Flexural strength and ductility of circular hollow reinforced concrete columns without confinement on inside face.” ACI Struct. J., 87(2), 156–166.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 1 • February 2007
Pages: 42 - 49
Copyright
© 2007 ASCE.
History
Received: Aug 4, 2005
Accepted: Apr 19, 2006
Published online: Feb 1, 2007
Published in print: Feb 2007
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.