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Journal of Rehabilitation in Civil Engineerin، جلد ۲، شماره ۲، صفحات ۹-۱۹
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عنوان انگلیسی An Experimental Study on Shear Strengthening of RC Lightweight Deep Beams Using CFRP
چکیده انگلیسی مقاله . This paper presents the results of an experimental investigation on shear strength enhancement of reinforced concrete deep beams externally reinforced with fiber reinforced polymer (FRP) composites. A total of six deep beam specimens of two different classes, as-built (unstrengthened) and retrofitted were tested in the experimental evaluation program. Two composite systems namely carbon/epoxy laminates and carbon/epoxy sheets were used for retrofit evaluation. A comparative study of the experimental results with published analytical models, including the ACI 440 model, was also conducted in order to evaluate the different analytical models and identify the influencing factors on the shear behavior of FRP strengthened reinforced concrete deep beams. Experimental results indicated that the composite systems provided substantial increase in ultimate strength of strengthened beams as compared to the as-built beam specimen. The strength gain caused by the CFRP sheets was in the range of 30–58% Analytical Comparison indicated that the shear span-to-depth ratio (a/d) is an important factor that actively controls the shear failure mode of beam and consequently influences on the shear strength enhancement.
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نویسندگان مقاله آزاده السادات اصغری | alsadat asghari
phd student, college of civil engineering, babol noshirvani university of technology, babol, iran
سازمان اصلی تایید شده: دانشگاه صنعتی نوشیروانی بابل (Babol noshirvani university of technology)

زهرا تبریزیان |
phd candidate, college of civil engineering, babol noshirvani university of technology, babol
سازمان اصلی تایید شده: دانشگاه صنعتی نوشیروانی بابل (Babol noshirvani university of technology)

مرتضی حسینعلی بیگی | hossein ali beigy
assistant professor, college of civil engineering, babol noshirvani university of technology, babol, iran
سازمان اصلی تایید شده: دانشگاه صنعتی نوشیروانی بابل (Babol noshirvani university of technology)

غلامرضا قدرتی امیری | ghodrati amiri
professor, center of excellence for fundamental studies in structural engineering, school of civil engineering, iran university of science amp;amp; technology, tehran, iran

بهرام navayineya |
assistant professor, college of civil engineering, babol noshirvani university of technology, babol, iran
سازمان اصلی تایید شده: دانشگاه صنعتی نوشیروانی بابل (Babol noshirvani university of technology)

نشانی اینترنتی http://civiljournal.semnan.ac.ir/article_204_532d19a873ddea1688781707aa97da0a.pdf
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