Fire Performance of Water-Cooled GFRP Columns. II: Postfire Investigation
This article is a reply.
VIEW THE ORIGINAL ARTICLEPublication: Journal of Composites for Construction
Volume 15, Issue 3
Abstract
The postfire mechanical performances of water-cooled full-scale GFRP cellular columns subjected to axial compression were evaluated after exposure to an ISO-834 fire from one side for periods of 60 and 120 mins. The elastic modulus and postfire buckling loads exhibited significant recovery after cooling because of the partial reversibility of glass transition. Existing methods to predict ultimate loads based on experimental buckling curves have proved inaccurate. Ultimate loads were accurately predicted, however, based on a shear failure criterion and by taking large initial imperfections caused by fire damage into account. Recently developed models to predict time- and temperature-dependent material and postfire properties showed good agreement with the experimental results and were thus further validated.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors would like to thank the Swiss National Science Foundation for its financial support (Grant No. NSF200020-117592/1).
References
AISC. (1999). Load and resistance factor design specification: For structural steel buildings, Chicago.
Bai, Y., and Keller, T. (2007). “Modeling of postfire stiffness for FRP composites under elevated and high temperatures.” Composites Part A, 38(10), 2142–2153.
Bai, Y., and Keller, T. (2009a). “Modeling of strength degradation for fiber reinforced polymer composites in fire.” J. Compos. Mater., 43(21), 2371–2385.
Bai, Y., and Keller, T. (2009b). “Shear failure of pultruded FRP composites under axial compression.” J. Compos. Constr., 13(3), 234–242.
Bai, Y., and Keller, T. (2011). “Fire performance of water-cooled GFRP columns. I: Fire endurance investigation.” J. Compos. Constr., 15(3), 404–412.
Bai, Y., Keller, T., and Vallée, T. (2008). “Modeling of stiffness of FRP composites under elevated and high temperatures.” Compos. Sci. Technol., 68(15–16), 3099–3106.
Bai, Y., Vallée, T., and Keller, T. (2007). “Modeling of thermo-physical properties for FRP composites under elevated and high temperatures.” Compos. Sci. Technol., 67(15–16), 3098–3109.
Barbero, E., and Tomblin, J. (1994). “A phenomenological design equation for FRP columns with interaction between local and global buckling.” Thin-Walled Struct., 18, 117–131.
Cassity, P. (2000). “Advanced composites for bridge infrastructure renewal—Phase II DARPA Agreement No. MDA972-94-3-0030/advanced composites technology transfer/bridge.” Infrastructure Renewal Consortium (Volume IV, Task 16-Modular Composite Bridge), Final Technical Rep.
Feih, S., Mathys, Z., Gibson, A. G., and Mouritz, A. P. (2007). “Modeling the tension and compression strengths of polymer laminates in fire.” Compos. Sci. Technol., 67, 551–564.
Fiberline. (2002). Design manual, Fiberline Composites, Kolding, Denmark.
Keller, T., Tracy, C., and Hugi, E. (2006a). “Fire endurance of loaded and liquid-cooled GFRP slabs for construction.” Composites Part A, 37(7), 1055–1067.
Keller, T., Tracy, C., and Zhou, A. (2006b). “Structural response of liquid-cooled GFRP slabs subjected to fire. Part I: Material and post fire modeling.” Composites Part A, 37(9), 1286–1295.
Mouritz, A. P. (2003). “Simple models for determining the mechanical properties of burnt FRP composites.” Mater. Sci. Eng., 359, 237–246.
Mouritz, A. P., and Mathys, Z. (1999). “Postfire mechanical properties of marine polymer composites.” Compos. Struct., 47, 643–653.
Pering, G. A., Farrell, P. V., and Springer, G. S. (1980). “Degradation of tensile and shear properties of composites exposed to fire or high temperatures.” J. Compos. Mater., 14, 54–68.
Puente, I., Insausti, A., and Azkune, M. (2006). “Buckling of GFRP column: An empirical approach to design.” J. Compos. Constr., 10(6), 529–537.
Timoshenko, S. P., and Gere, J. M. (1963). Theory of elastic stability, 2nd Ed., McGraw Hill, New York
Turvey, G. J., and Zhang, Y. (2006). “Shear failure strength of web-flange junctions in pultruded GRP WF profiles.” Constr. Build. Mater., 20, 81–89.
Wong, P. M. H., Davies, M. J., and Wang, Y. C. (2004). “An experimental and numerical study of the behavior of glass fiber reinforced plastics (GRP) short columns at elevated temperatures.” Compos. Struct., 63, 33–43.
Information & Authors
Information
Published In
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 3, 2010
Accepted: Nov 5, 2010
Published online: Nov 8, 2010
Published in print: Jun 1, 2011
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.