Strengthening of steel I-beams using CFRP strips: an investigation on CFRP bond length

Narmashiri, Kambiz and Jumaat, Mohd Zamin and Ramli Sulong, Nor Hafizah (2012) Strengthening of steel I-beams using CFRP strips: an investigation on CFRP bond length. Advances in Structural Engineering, 15 (12). pp. 2191-2204. ISSN 1369-4332, DOI

Full text not available from this repository.
Official URL:


This research investigates the effects of applying different bond lengths for Carbon Fibre Reinforced Polymer (CFRP) strips used in flexural strengthening of steel I-beams. Wide range of the structural parameters i.e. load bearing capacity, failure mode, strain on CFRP, strain on adhesive, strain on steel beam, lateral deformation, and vertical deflection were investigated. Both numerical and experimental studies were employed. To simulate the specimens, ANSYS software in three dimensional (3D) modelling case and non-linear analysis method was utilized. In the experimental test, four-point bending method with static gradual loading was applied. Results indicate that using shorter CFRP bond lengths caused brittle behaviour, and applying longer CFRP bond lengths resulted in more flexible behaviour. Using different CFRP bond lengths affected the whole structural behaviours of the strengthened beams.

Item Type: Article
Additional Information: Export Date: 6 January 2013 Source: Scopus CODEN: ASEDD Language of Original Document: English Correspondence Address: Narmashiri, K.; Department of Civil Engineering, Zahedan Branch, Lamic Azad University, Zahedan 98168, Iran; email: References: Al-Emrani, M., Linghoff, D., Kliger, R., Bonding strength and fracture mechanisms in composite steel-CFRP elements (2005) Proceedings of International Symposium on Bond Behaviour of FRP in Structures (BBFS 2005), , Hong Kong, China; Bocciarelli, M., Colombi, P., Fava, G., Poggi, C., Prediction of debonding strength of tensile steel/CFRP joints using fracture mechanics and stress based criteria (2009) Engineering Fracture Mechanics, 76 (2), pp. 299-313; Buyukozturk, O., Gunes, O., Karaca, E., Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites (2004) Construction and Building Materials, 18 (1), pp. 9-19; Chen, J.F., Teng, J.G., Anchorage strength models for FRP and steel plates bonded to concrete (2001) Journal of Structural Engineering, 127 (7), pp. 784-791. , DOI 10.1061/(ASCE)0733-9445(2001)127:7(784), Reportnr 22327; Chiew, S.P., Lie, S.T., Lee, C.K., Yu, Y., Debonding failure model for FRP retrofitted steel beams (2005) Proceedings of Fourth International Conference on Advances in Steel Structures, , Shanghai, China; Colombi, P., Poggi, C., An experimental, analytical and numerical study of the static behavior of steel beams reinforced by pultruded CFRP strips (2006) Composites Part B: Engineering, 37 (1), pp. 64-73. , DOI 10.1016/j.compositesb.2005.03.002, PII S1359836805000697; Dawood, M.M.R., (2005) Fundamental Behavior of Steel-Concrete Composite Beams Strengthened with High Modulus Carbon Fiber Reinforced Polymer (CFRP), , Materials Master Thesis North Carolina State University, Raleigh, NC, USA; Deng, J., Lee, M.M.K., Behaviour under static loading of metallic beams reinforced with a bonded CFRP plate (2007) Composite Structures, 78 (2), pp. 232-242. , DOI 10.1016/j.compstruct.2005.09.004, PII S0263822305002485; Deng, J., Lee, M.M.K., Fatigue performance of metallic beam strengthened with a bonded CFRP plate (2007) Composite Structures, 78 (2), pp. 222-231. , DOI 10.1016/j.compstruct.2005.09.003, PII S0263822305002473; Deng, J., Lee, M.M.K., Moy, S.S.J., Stress analysis of steel beams reinforced with a bonded CFRP plate (2004) Composite Structures, 65 (2), pp. 205-215. , DOI 10.1016/j.compstruct.2003.10.017, PII S0263822303003337; Fernando, N.D., (2010) Bond Behaviour and Debonding Failures in CFRP-Strengthened Steel Members, , PhD Thesis The Hong Kong Polytechnic University, Hong Kong, China; Haghani, R., Al-Emrani, M., Kliger, R., Control of interfacial stresses in beams strengthened with prestressed cfrp laminates (2007) Proceedings of Asia-acific Conference on FRP in Structures (APFIS 2007), , Hong Kong, China; Haghani, R., Al-Emrani, M., Kliger, R., Interfacial stress analysis of geometrically modified adhesive joints in steel beams strengthened with FRP laminates (2009) Construction and Building Materials, 23 (3), pp. 1413-1422; Lenwari, A., Thepchatri, T., Albrecht, P., Flexural response of steel beams strengthened with partial-length CFRP plates (2005) Journal of Composites for Construction, 9 (4), pp. 296-303. , DOI 10.1061/(ASCE)1090-0268(2005)9:4(296); Lenwari, A., Thepchatri, T., Albrecht, P., Debonding strength of steel beams strengthened with CFRP plate (2006) Journal of Composite for Construction, ASCE, 10 (1), pp. 69-78; Linghoff, D., (2006) Strengthening Steel Beams with Adhesively Bonded Composite Laminates, , PhD Thesis Chalmers University of Technology, Landala, Sweden; Linghoff, D., Al-Emrani, M., Performance of steel beams strengthened with CFRP laminate-art 2: FE analyses (2010) Composites: Part B Engineering, 41 (7), pp. 516-522; Linghoff, D., Haghani, R., Al-Emrani, M., Carbon-fibre composites for strengthening steel structures (2009) Thin Walled Structures, 47 (10), pp. 1048-1058; Messick, S.C., (1996) Adhesive Selection and Evaluation for Strengthening Steel Stringer Bridges Using CFRP, , PhD Thesis, West Virginia University West Virginia, USA; Narmashiri, K., (2011) Flexural Strengthening of Steel Beams Using CFRP Materials, Part One: An Investigation on CFRP Failure Modes, , VDM Verlag Dr. Müller, Germany; Narmashiri, K., Jumaat, M.Z., Reinforced steel i-beams: A comparison between 2d and 3d simulation (2011) Simulation Modelling Practice and Theory, 19 (1), pp. 564-585; Narmashiri, K., Ramli Sulong, N.H., Jumaat, M.Z., Failure analysis and structural behaviour of CFRP strengthened steel I-beams (2012) Construction and Building Materials, 30, pp. 1-9; Nozaka, K., Shield, C.K., Hajjar, J.F., Design of a test specimen to assess the effective bond length of carbon fiber-reinforced polymer strips bonded to fatigued steel bridge girders (2005) Journal of Composites for Construction, 9 (4), pp. 304-312. , DOI 10.1061/(ASCE)1090-0268(2005)9:4(304); Nozaka, K., Shield, C.K., Hajjar, J.F., Effective bond length of carbon-fiber-reinforced polymer strips bonded to fatigued steel bridge I-girders (2005) Journal of Bridge Engineering, 10 (2), pp. 195-205. , DOI 10.1061/(ASCE)1084-0702(2005)10:2(195); Schnerch, D., Stanford, K., Sumner, E., Rizkalla, S., Bond behavior of CFRP strengthened steel bridges and structures (2005) Proceedings of International Symposium on Bond Behaviour of FRP in Structures (BBFS 2005), , International Institute for FRP in Construction, Hong Kong, China; Schnerch, D., Dawood, M., Sumner, E., Rizkalla, S., Design guidelines for strengthening of steel-concrete composite beams with high modulus CFRP materials (2006) Proceedings of 7th International Conference on Short and Medium Span Bridges, , Montreal, Quebec, Canada; (2008) SIKA® Product Information Second Ed., , SIKA, Sika® Kimia Sdn Bhd., Kuala Lumpur; Teng, J.G., Zhang, J.W., Smith, S.T., Interfacial stresses in reinforced concrete beams bonded with a soffit plate: A finite element study (2002) Construction and Building Materials, 16 (1), pp. 1-14. , DOI 10.1016/S0950-0618(01)00029-0, PII S0950061801000290; Teng, J.G., Yu, T., Fernando, D., FRP composites in steel structures (2009) Proceedings of the Third International Forum on Advances in Structural Engineering, , Shanghai, China
Uncontrolled Keywords: Bond length, carbon fibre reinforced polymer (CFRP), I-beam, steel, strengthening
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 23 Apr 2013 00:57
Last Modified: 16 Jan 2020 02:27

Actions (login required)

View Item View Item