Local stiffening of steel I-beams by using CFRP materials
Document Type
Conference Item
Publication Date
1-1-2011
Abstract
This paper reports the experimental studies on the local stiffening of steel I-beams by using Carbon Fiber Reinforced Polymer (CFRP) strips. One of the problems which frequently occur for steel section is the large local deformation under point loads. To study the effects of applying CFRP for local stiffening, four steel I-beams were selected and tested to failure. The first beam had no steel stiffeners below the point loads and used as the control beam. The second beam had steel stiffeners and was not enhanced by using CFRP strip. The third and fourth beams had no steel stiffeners below the point loads and were strengthened on the compressive flanges by using two longitudinal CFRP strips. Also, the third and fourth specimens were strengthened on the web by using the latitudinal CFRP strips in the discrete and continual types, respectively. The results show that applying CFRP on the compressive flange and web increased the load bearing capacity and decreased the local and overall deformations appropriately. Also, the full-covering of the web seems to be the best type of web strengthening.
Keywords
Carbon Fiber Reinforced Polymer (CFRP), I-beam, Local stiffening, Steel, Strengthening, Carbon fiber reinforced polymer, CFRP materials, Control beams, Experimental studies, I beams, Load-bearing capacity, Local deformations, Point load, Steel sections, Building materials, Construction equipment, Deformation, Fiber reinforced plastics, Flanges, Polymers, Reinforced plastics, Strengthening (metal), Carbon fibers.
Divisions
fac_eng
Volume
163-16
Event Title
2011 International Conference on Structures and Building Materials, ICSBM 2011
Event Location
Guangzhou
Event Dates
2011
Event Type
conference
Additional Information
Conference code: 83464 Cited By (since 1996): 3 Export Date: 6 January 2013 Source: Scopus doi: 10.4028/www.scientific.net/AMR.163-167.3838 Language of Original Document: English Correspondence Address: Narmashiri, K.; Civil Engineering Department, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia; email: kambiz@narmashiri.com References: Sen, R., Liby, L., Mullins, G., (2001) Compos. Part B-Eng., 32, p. 309; Deng, J., Lee, M.M.K., Moy, S.S.J., (2004) Compos. Struct., 65, p. 205; Nozaka, K., Shield, C.K., Hajjar, J.F., (2005) J Bridge Eng., 10, p. 195; Colombi, P., (2006) Eng. Fract. Mech., 73, p. 1980; Colombi, P., Poggi, C., (2006) Compos. Part B-Eng., 37, p. 64; Photiou, N.K., Hollaway, L.C., Chryssanthopoulos, M.K., (2006) Constr. Build. Mater., 20, p. 11; Youssef, M.A., (2006) Eng. Struct., 28, p. 903; Al-Saidy, A.H., Klaiber, F.W., Wipf, T.J., (2007) Constr. Build. Mater., 21, p. 295; Deng, J., Lee, M.M.K., (2007) Compos. Struct., 78, p. 232; Deng, J., Lee, M.M.K., (2007) Compos. Struct., 78, p. 222; Al-Saidy, A.H., Klaiber, F.W., Wipf, T.J., Al-Jabri, K.S., Al-Nuaimi, A.S., (2008) Constr.Build. Mater., 22, p. 729; Fam, A., Dougall, C.M., Shaat, A., (2009) Thin Wall. Struct., 47, p. 1122; Pellegrino, C., Maiorana, E., Modena, C., (2008) Mater. Struct., 42, p. 353; Rizkalla, S., Dawood, M., Schnerch, D., (2008) Compos. Part A-Appl., 39, p. 388; Bocciarelli, M., (2009) Eng. Struct., 31, p. 956; Linghoff, D., Haghani, R., Al-Emrani, M., (2009) Thin Wall. Struct., 47, p. 1048. , 2009; Narmashiri, K., Jumaat, M.Z., (2010) Simul. Model. Pract. Theory, , in press, doi:10.1016/j.simpat.2010.08.012; Narmashiri, K., Jumaat, M.Z., Sulong, N.H.R., (2010) Int. J. Phys. Sci., 5. , in press; Patnaik, A.K., Bauer, C.L., Srivatsan, T.S., (2008) Sadhana-Acad. P. Eng. S., 33, p. 261; Narmashiri, K., Jumaat, M.Z., Sulong, N.H.R., (2010) Sci. Res. Essays, 5, p. 2155; Zhao, X.L., Fernando, D., Al-Mahaidi, R., (2006) Eng. Struct., 28, p. 1555; Harries, K.A., Peck, A.J., Abraham, E.J., (2009) Thin Wall. Struct., 47, p. 1092; Fernando, D., Yu, T., Teng, J.G., Zhao, X.L., (2009) Thin Wall. Struct., 47, p. 1020; Zhao, X.L., Al-Mahaidi, R., (2009) Thin Wall. Struct., 47, p. 1029; (2008) SIKA Product Information, , Second ed.(Sika Kimia Sdn Bhd. Kuala Lumpur); Salmon, C.G., Johnson, J.E., Malhas, F.A., (2009) Steel Structures, Design and Behavior, , Fifth ed. (Pearson Prentice Hall, New Jersey)