000223736 001__ 223736
000223736 005__ 20180913064049.0
000223736 020__ $$a978-988-14480-26
000223736 037__ $$aCONF
000223736 245__ $$aStress Analysis of Unbonded and Bonded Prestressed CFRP-strengthened Steel Plates
000223736 269__ $$a2016
000223736 260__ $$bThe Hong Kong Polytechnic University$$c2016$$aHong Kong, China
000223736 336__ $$aConference Papers
000223736 520__ $$aNumerous research studies are available in the literature on strengthening of steel members using carbon fiber reinforced polymer (CFRP) composites. Although it is clear that strengthening using prestressed CFRP plates has several advantages over non-prestressed reinforcements, less attention has been paid in the literature to develop theoretical formulations. Consequently, in this paper, unbonded and bonded prestressed CFRP-strengthened steel plates are analyzed and stresses in CFRP and steel substrate are analytically formulated. Furthermore, the effect of single-side retrofit, which is usually neglected in stress calculations, has been studied. Analytical formulations were then verified by the results of static tests on CFRP strengthened steel plates under tensile loading. The primary results show that prestressing could considerably reduce the tensile stresses in steel. Consequently, strengthening with prestressed CFRP laminates could be used as an efficient technique for strengthening of steel members, especially those prone to fatigue. However, the available capacity of the prestressed bonded reinforcements before debonding is much less than the developed mechanically anchored, prestressed unbonded reinforcements. Moreover, analytical modeling and experimental results of the current study show that neglecting the eccentricity in single-side CFRP-strengthened steel plates could result in an unsafe stress prediction in steel substrate.
000223736 6531_ $$aSteel member
000223736 6531_ $$aStrengthening
000223736 6531_ $$aPrestressed CFRP
000223736 6531_ $$aUnbonded reinforcement
000223736 6531_ $$aAnalytical solution
000223736 700__ $$0249524$$g255250$$aHosseini, Ardalan
000223736 700__ $$aGhafoori, Elyas
000223736 700__ $$aMotavalli, Masoud
000223736 700__ $$0243059$$g113159$$aNussbaumer, Alain
000223736 700__ $$aZhao, Xiao-Ling
000223736 7112_ $$dDecember 14-16, 2016$$cHong Kong, China$$a8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering
000223736 720_1 $$aTeng, Jin-Guang$$eed.
000223736 720_1 $$aDai, Jian-Guo$$eed.
000223736 773__ $$tProceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering$$q1179-1186
000223736 909C0 $$xU10233$$0252555$$pRESSLAB
000223736 909CO $$pconf$$pENAC$$ooai:infoscience.tind.io:223736
000223736 917Z8 $$x255250
000223736 937__ $$aEPFL-CONF-223736
000223736 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000223736 980__ $$aCONF