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Abstract:
Using FRP rebars in concrete structures, instead of steel rebars, has become popular, due to the advantages of FRP composites, which include high strength-to-weight ratio and high corrosion resistance. Over the last few years, most research work has been focused on simple-supported beams reinforced with FRP rebars, while in reality most beams are continuous beams. Experimental study has been conducted for five continuous beams reinforced with FRP rebars and one reinforced with steel rebars. The proportion of mid-support to mid-span reinforcement ratio is considered as an influencing parameter, and the flexural behavior is studied under symmetrical monotonous loading. The items studied during the experiments include the cracking behavior, load-deflection response, load-moment relationship, internal force redistribution, ultimate load, and so on. The results show that the cross-section of continuous beams reinforced with FRP rebars is better in rotational capacity and that the internal forces redistribute through the cracking process. Moment redistribution is stable and closely related to the relative proportion of reinforcement. Based on the experimental result and the theoretical analysis, simplified formulas are proposed for calculating the moment redistribution, ultimate bearing capacity of continuous beams reinforced with FRP rebars, and the results of these formulas are in good agreement with the experiments.
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China Civil Engineering Journal
ISSN: 1000-131X
CN: 11-2120/TU
Year: 2008
Issue: 5
Volume: 41
Page: 1-7
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
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