Investigation on corroded hss tubular members under compression strengthened with CFRP composites

• Autorzy: Sundarraja M. C. , Sriram P.

Identyfikatory

DOI

10.2478/ace-2014-0007

• Języki publikacji: EN

Abstrakty

EN

The main objective of this investigation is to assess the feasibility of strengthening of corroded (damaged) square hollow steel tubular sections subjected to compression and to develop or predict the suitable wrapping scheme of fibre reinforced polymer (FRP) to enhance the structural behaviour of it. For this study, compact mild steel tubes were used with the main variable being FRP characteristics. Carbon fibre reinforced polymer (CFRP) fabrics was used as horizontal strips (lateral ties) with other parameters such as the number of layers and spacing of strips. Among fourteen specimens, six were externally bonded by CFRP strips having a constant width of 50mm with a spacing of 20mm and the remaining six were externally bonded by CFRP strips having a constant width of 70mm with a spacing of 20mm, two columns were unbonded. Experiments were undertaken until the failure of columns to fully understand the influence of FRP characteristics on the compressive behaviour of the square sections including their failure modes, axial stress-strain behaviour, enhancement in the load carrying capapcity, and effect of distribution of CFRP layers. Finally, the behaviour of externally bonded hollow tubular sections was compared with one another and also with the control specimens. Evaluation of the results will lead to optimum CFRP jacketing/ wrapping arrangements for the steel tubes considered here.

Słowa kluczowe

EN

HSS tubes; corrosive damage; CFRP fabric; strengthening; axial compression

PL

rura HSS; uszkodzenie korozyjne; tkanina CFRP; wzmacnianie; ściskanie osiowe

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2014
• Tom: Vol. 60, nr 1
• Strony: 145--159
• Opis fizyczny: Bibliogr. 8 poz., il., tab.

Twórcy

autor

Sundarraja M. C.

• Faculty of Civil Engineering, Thiagarajar College of Engineering, Madurai, Tamilnadu, India

autor

Sriram P.

• Thiagarajar College of Engineering, Madurai, Tamilnadu, India

Bibliografia

• 1. MICHAEL V. SEICA and JEFFREY A. PACKER: ‘FRP materials for the rehabilitation of tubular steel structures, for underwater applications’, Elsevier Composites Structs., 80, 440–450, 2007.
• 2. H. JIAO and XL. ZHAO: ‘CFRP strengthened buttwelded very high strength (VHS) circular steel tubes’, Thin-Walled Structures, 42, (7), 963–78, 2004.
• 3. A. SHAAT and A. FAM: ‘Axial loading tests on CFRPretrofitted short and long HSS steel columns’, Canadian Jl. of Civil Engg. 33, (4), 458–70, 2006.
• 4. A. SHAAT and A. FAM: ‘Modeling of axially loaded HSS slender steel columns strengthened with CFRP sheets’, Intl. Conf. on Advances in Engg. Structs., Mech. and Construct., 2006.
• 5. YH. ZHAO, W. GU, J. XU and HT. ZHANG: ‘The strength of concrete-filled CFRP steel tubes under axial compression’, ISOPE conference, JSC-313, 2005.
• 6. Z. TAO, LH. HAN and JP. ZHUANG: ‘Experimental behavior of CFRP strengthened concrete-filled steel tubular stub columns’, Advances in Structural Engineering, 2006.
• 7. J. HAEDIR, M.R. BAMBACH, XL. ZHAO and RH. GRZEBIETA: ‘Bending strength of CFRP-strengthened circular hollow steel sections’, Third Intl. Conf. on FRP Composites in Civil Engg., 2006.
• 8. M.R. BAMBACH, H.H. JAMA and M. ELCHALAKANI: ‘Effect of externally bonded CFRP on the local buckling and axial capacity of steel SHS’, Fifth international conference on coupled instabilities in metal structures, Sydney, Australia, 23–25, 2008.