Experimental Study on FRP-Strengthened Steel Tubular Members under Lateral Impact
Publication: Journal of Composites for Construction
Volume 21, Issue 5
Abstract
Hollow structural members are highly vulnerable structural components subjected to transverse impact loads. These tubular members have been used widely in both onshore and offshore structures where lateral impact forces can be expected from moving vehicles/vessels or terrorist attacks. Thus, strengthening of steel hollow tubular members is required to safely carry both service static and imposed dynamic impact loads. This paper presents the results from a series of tests on bare and fiber-reinforced polymer (FRP) strengthened circular hollow-section (CHS) steel members subjected to transverse impact loading at midspan. A total of 14 (2 bare and 12 strengthened) medium-scale specimens were tested to investigate the effect of FRP wrapping on the global and local deformation capacities of strengthened members under drop-hammer impact. Both carbon-fiber-reinforced polymer (CFRP) and glass-fiber-reinforced polymer (GFRP) sheets were used as strengthening materials. The results indicate that the FRP strengthening of the tubes enhances their impact-resistance capacity by reducing lateral displacements up to 29% compared to bare steel CHS specimens. The influence of FRP type, CFRP orientation, CFRP thickness, and effective bond length on the structural response and failure behavior of wrapped members were investigated. The results showed that the application of FRP in the longitudinal direction was effective to control the global deformations whereas the hoop layers were effective in reducing local inward deformations of CHS members.
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Acknowledgments
The authors would like to thank technical staff, Mr. Alan Grant, Mr. Cameron Neilson, and Mr. Ritchie McLean for their assistance in the experimental work at the University of Wollongong laboratory. The authors would also like to thank Queensland University of Technology (QUT) and Tsinghua Initiative Scientific Research Program (No. 20131089347) for providing support to carry out the work reported in this paper.
References
Alam, M. I., and Fawzia, S. (2015). “Numerical studies on CFRP strengthened steel columns under transverse impact.” Compos. Struct., 120, 428–441.
Alam, M. I., Fawzia, S., and Batuwitage, C. (2015a). “CFRP strengthened CFST columns under vehicular impact.” Proc., 2nd Int. Conf. on Performance-Based and Life-cycle Structural Engineering, Univ. of Queensland and Hong Kong Polytechnic Univ., Brisbane, Australia, 459–465.
Alam, M. I., Fawzia, S., and Liu, X. (2015b). “Effect of bond length on the behaviour of CFRP strengthened concrete-filled steel tubes under transverse impact.” Compos. Struct., 132, 898–914.
Alam, M. I., Fawzia, S., Liu, X., and Batuwitage, C. (2014). “Dynamic simulation of CFRP strengthened steel column under impact loading.” Proc., 23rd Australasian Conf. on the Mechanics of Structures and Materials (ACMSM23), Southern Cross Univ., Byron Bay, Australia, 503–508.
Alam, M. I., Fawzia, S., and Zhao, X.-L. (2016). “Numerical investigation of CFRP strengthened full scale CFST columns subjected to vehicular impact.” Eng. Struct., 126, 292–310.
Al-Mosawe, A., Al-Mahaidi, R., and Zhao, X.-L. (2015). “Effect of CFRP properties, on the bond characteristics between steel and CFRP laminate under quasi-static loading.” Constr. Build. Mater., 98, 489–501.
Al-Zubaidy, H., Al-Mahaidi, R., and Zhao, X.-L. (2012). “Experimental investigation of bond characteristics between CFRP fabrics and steel plate joints under impact tensile loads.” Compos. Struct., 94(2), 510–518.
Al-Zubaidy, H., Al-Mahaidi, R., and Zhao, X.-L. (2013). “Finite element modelling of CFRP/steel double strap joints subjected to dynamic tensile loadings.” Compos. Struct., 99, 48–61.
AS (Australian Standard). (2007). “Metallic materials—Tensile testing at ambient temperature.”, Sydney, NSW, Australia.
AS (Australian Standard). (2009). “Cold-formed structural steel hollow sections.”, Sydney, NSW, Australia.
ASTM. (2008). “Standard test method for tensile properties of polymer matrix composite materials.” ASTM D3039, West Conshohocken, PA.
Bambach, M., Jama, H., Zhao, X.-L., and Grzebieta, R. (2008). “Hollow and concrete filled steel hollow sections under transverse impact loads.” Eng. Struct., 30(10), 2859–2870.
Bambach, M. R. (2011). “Design of hollow and concrete filled steel and stainless steel tubular columns for transverse impact loads.” Thin-Walled Struct., 49(10), 1251–1260.
Fawzia, S. (2013). “Evaluation of shear stress and slip relationship of composite lap joints.” Compos. Struct., 100, 548–553.
Fawzia, S., Al-Mahaidi, R., and Zhao, X.-L. (2006). “Experimental and finite element analysis of a double strap joint between steel plates and normal modulus CFRP.” Compos. Struct., 75(1), 156–162.
Fawzia, S., Al-Mahaidi, R., Zhao, X.-L., and Rizkalla, S. (2007). “Strengthening of circular hollow steel tubular sections using high modulus CFRP sheets.” Constr. Build. Mater., 21(4), 839–845.
Fawzia, S., Zhao, X.-L., and Al-Mahaidi, R. (2010). “Bond-slip models for double strap joints strengthened by CFRP.” Compos. Struct., 92(9), 2137–2145.
Fawzia, S., Zhao, X.-L., Al-Mahaidi, R., and Rizkalla, S. (2005). “Bond characteristics between CFRP and steel plates in double strap joints.” Int. J. Adv. Steel Constr., 1(2), 17–27.
Fernando, D., Teng, J., Yu, T., and Zhao, X.-L. (2013). “Preparation and characterization of steel surfaces for adhesive bonding.” J. Compos. Constr., .
Gajdosova, K., and Bilcik, J. (2013). “Full-scale testing of CFRP-strengthened slender reinforced concrete columns.” J. Compos. Constr., 239–248.
Gao, X., Balendra, T., and Koh, C. (2013). “Buckling strength of slender circular tubular steel braces strengthened by CFRP.” Eng. Struct., 46, 547–556.
Haedir, J., Bambach, M., Zhao, X.-L., and Grzebieta, R. (2009). “Strength of circular hollow sections (CHS) tubular beams externally reinforced by carbon FRP sheets in pure bending.” Thin-Walled Struct., 47(10), 1136–1147.
Haedir, J., and Zhao, X.-L. (2011). “Design of short CFRP-reinforced steel tubular columns.” J. Constr. Steel Res., 67(3), 497–509.
Hollaway, L., and Cadei, J. (2002). “Progress in the technique of upgrading metallic structures with advanced polymer composites.” Prog. Struct. Eng. Mater., 4(2), 131–148.
Hollaway, L. C., and Teng, J.-G. (2008). Strengthening and rehabilitation of civil infrastructures using fibre-reinforced polymer (FRP) composites, Elsevier, Cambridge, U.K.
Jama, H., Nurick, G., Bambach, M., Grzebieta, R., and Zhao, X.-L. (2012). “Steel square hollow sections subjected to transverse blast loads.” Thin-Walled Struct., 53, 109–122.
Jiao, H., and Zhao, X.-L. (2004). “CFRP strengthened butt-welded very high strength (VHS) circular steel tubes.” Thin-Walled Struct., 42(7), 963–978.
Kabir, M., Fawzia, S., Chan, T., and Gamage, J. (2016a). “Comparative durability study of CFRP strengthened tubular steel members under cold weather.” Mater. Struct., 49(5), 1761–1774.
Kabir, M. H., Fawzia, S., Chan, T. H. T., and Badawi, M. (2016b). “Durability of CFRP strengthened steel circular hollow section member exposed to sea water.” Constr. Build. Mater., 118, 216–225.
Kabir, M. H., Fawzia, S., Chan, T. H. T., and Badawi, M. (2016c). “Numerical studies on CFRP strengthened steel circular members under marine environment.” Mater. Struct., 49(10), 4201–4216.
Kabir, M. H., Fawzia, S., Chan, T. H. T., Gamage, J. C. P. H., and Bai, J. B. (2016d). “Experimental and numerical investigation of the behaviour of CFRP strengthened CHS beams subjected to bending.” Eng. Struct., 113, 160–173.
Karbhari, V., and Shulley, S. (1995). “Use of composites for rehabilitation of steel structures—Determination of bond durability.” J. Mater. Civ. Eng., 239–245.
Pham, T. M., and Hao, H. (2016). “Impact behavior of FRP-strengthened RC beams without stirrups.” J. Compos. Constr., .
Qasrawi, Y., Heffernan, P. J., and Fam, A. (2015). “Dynamic behaviour of concrete filled FRP tubes subjected to impact loading.” Eng. Struct., 100, 212–225.
Remennikov, A., Kong, S., and Uy, B. (2011). “Response of foam and concrete-filled square steel tubes under low-velocity impact loading.” J. Perform. Constr. Facil., 373–381.
Sadeghian, P., Rahai, A. R., and Ehsani, M. R. (2010). “Experimental study of rectangular RC columns strengthened with CFRP composites under eccentric loading.” J. Compos. Constr., 443–450.
Schnerch, D., Dawood, M., Rizkalla, S., and Sumner, E. (2007). “Proposed design guidelines for strengthening of steel bridges with FRP materials.” Constr. Build. Mater., 21(5), 1001–1010.
Sha, Y., and Hao, H. (2012). “Nonlinear finite element analysis of barge collision with a single bridge pier.” Eng. Struct., 41, 63–76.
Sha, Y., and Hao, H. (2013). “Laboratory tests and numerical simulations of barge impact on circular reinforced concrete piers.” Eng. Struct., 46, 593–605.
Shaat, A., and Fam, A. (2006). “Axial loading tests on short and long hollow structural steel columns retrofitted using carbon fibre reinforced polymers.” Can. J. Civ. Eng., 33(4), 458–470.
Shaat, A., and Fam, A. (2007). “Fiber-element model for slender HSS columns retrofitted with bonded high-modulus composites.” J. Struct. Eng., 85–95.
Shaat, A., and Fam, A. (2009). “Slender steel columns strengthened using high-modulus CFRP plates for buckling control.” J. Compos. Constr., 2–12.
Teng, J., Yu, T., and Fernando, D. (2012). “Strengthening of steel structures with fiber-reinforced polymer composites.” J. Constr. Steel Res., 78, 131–143.
Yousuf, M., Uy, B., Tao, Z., Remennikov, A., and Liew, J. (2013). “Transverse impact resistance of hollow and concrete filled stainless steel columns.” J. Constr. Steel Res., 82, 177–189.
Yousuf, M., Uy, B., Tao, Z., Remennikov, A., and Liew, J. Y. R. (2014). “Impact behaviour of pre-compressed hollow and concrete filled mild and stainless steel columns.” J. Constr. Steel Res., 96, 54–68.
Zhao, X.-L. (2013). FRP-strengthened metallic structures, CRC Press, Boca Raton, FL.
Zhao, X.-L., and Zhang, L. (2007). “State-of-the-art review on FRP strengthened steel structures.” Eng. Struct., 29(8), 1808–1823.
Information & Authors
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Published In
Journal of Composites for Construction
Volume 21 • Issue 5 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jul 14, 2016
Accepted: Dec 6, 2016
Published ahead of print: Mar 8, 2017
Published online: Mar 9, 2017
Discussion open until: Aug 9, 2017
Published in print: Oct 1, 2017
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