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A platform for research: civil engineering, architecture and urbanism
Moment redistribution in glass fiber reinforced polymer-reinforced concrete continuous beams subjected to unsymmetrical loading
HighlightsInvestigating the behavior of glass fiber reinforced polymer (GFRP)-reinforced concrete (RC) continuous beams subjected to unsymmetrical loading conditions. Three different loading cases were considered, (I) loading both spans equally, (II) loading both spans maintaining a load ratio of 1.5 and (III) loading one span only. The effects of reinforcing material type, assumed percentage of moment redistribution and serviceability requirements on the performance of the test beams were investigated.Laboratory tests on a total of six full-scale GFRP-RC continuous beams. All test beams were 6000-mm long and supported over three supports with equal spans of 2800 mm each. The beams were 200-mm wide and 300-mm deep. Also, a comparison between the experimental deflection and that predicted by available models (based on the effective moment of inertia approach) is presented.The current study, up to the authors’ knowledge, is the first to investigate the moment redistribution of GFRP-RC continuous beams under unequal (unsymmetrical) loading conditions.It was concluded that beams tested under unsymmetrical loading case II showed less crack widths, strains and deflections in the higher load span compared to those in the less load span or in the symmetrically loaded beam. Also, beam with one loaded span experienced crack widths, strains and deflections in the loaded span similar to those of the symmetrically loaded beam. Moreover, the unsymmetrical loading conditions reduced the percentage of moment redistribution.
AbstractThis paper investigates the behavior of glass fiber reinforced polymer (GFRP)-reinforced concrete (RC) continuous beams subjected to unsymmetrical loading conditions. A total of six large-scale RC continuous beams were constructed and tested to failure. Three different loading cases were considered, (I) loading both spans equally, (II) loading both spans maintaining a load ratio of 1.5 and (III) loading one span only. The effects of reinforcing material type, assumed percentage of moment redistribution and serviceability requirements on the performance of the test beams were investigated. Also, a comparison between the experimental deflection and that predicted by available models, using effective moment of inertia approach, is presented. Test results revealed that, beams tested under unsymmetrical loading case II showed less crack widths, strains and deflections in the higher load span compared to those in the less load span or those symmetrically loaded. Moreover, the unsymmetrical loading conditions adversely affected the moment redistribution.
Moment redistribution in glass fiber reinforced polymer-reinforced concrete continuous beams subjected to unsymmetrical loading
HighlightsInvestigating the behavior of glass fiber reinforced polymer (GFRP)-reinforced concrete (RC) continuous beams subjected to unsymmetrical loading conditions. Three different loading cases were considered, (I) loading both spans equally, (II) loading both spans maintaining a load ratio of 1.5 and (III) loading one span only. The effects of reinforcing material type, assumed percentage of moment redistribution and serviceability requirements on the performance of the test beams were investigated.Laboratory tests on a total of six full-scale GFRP-RC continuous beams. All test beams were 6000-mm long and supported over three supports with equal spans of 2800 mm each. The beams were 200-mm wide and 300-mm deep. Also, a comparison between the experimental deflection and that predicted by available models (based on the effective moment of inertia approach) is presented.The current study, up to the authors’ knowledge, is the first to investigate the moment redistribution of GFRP-RC continuous beams under unequal (unsymmetrical) loading conditions.It was concluded that beams tested under unsymmetrical loading case II showed less crack widths, strains and deflections in the higher load span compared to those in the less load span or in the symmetrically loaded beam. Also, beam with one loaded span experienced crack widths, strains and deflections in the loaded span similar to those of the symmetrically loaded beam. Moreover, the unsymmetrical loading conditions reduced the percentage of moment redistribution.
AbstractThis paper investigates the behavior of glass fiber reinforced polymer (GFRP)-reinforced concrete (RC) continuous beams subjected to unsymmetrical loading conditions. A total of six large-scale RC continuous beams were constructed and tested to failure. Three different loading cases were considered, (I) loading both spans equally, (II) loading both spans maintaining a load ratio of 1.5 and (III) loading one span only. The effects of reinforcing material type, assumed percentage of moment redistribution and serviceability requirements on the performance of the test beams were investigated. Also, a comparison between the experimental deflection and that predicted by available models, using effective moment of inertia approach, is presented. Test results revealed that, beams tested under unsymmetrical loading case II showed less crack widths, strains and deflections in the higher load span compared to those in the less load span or those symmetrically loaded. Moreover, the unsymmetrical loading conditions adversely affected the moment redistribution.
Moment redistribution in glass fiber reinforced polymer-reinforced concrete continuous beams subjected to unsymmetrical loading
Rahman, S.M. Hasanur (author) / Mahmoud, Karam (author) / El-Salakawy, Ehab (author)
Engineering Structures ; 150 ; 562-572
2017-07-20
11 pages
Article (Journal)
Electronic Resource
English
Moment Redistribution in Continuous Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Beams
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