Alsadat Asghari, Azadeh, Tabrizian, Zahra, Hossein Ali Beigy, Morteza, Ghodrati Amiri, Gholamreza, Navayineya, Bahram. (1393). An Experimental Study on Shear Strengthening of RC Lightweight Deep Beams Using CFRP. هنرهای کاربردی, 2(2), 9-19. doi: 10.22075/jrce.2014.204
Azadeh Alsadat Asghari; Zahra Tabrizian; Morteza Hossein Ali Beigy; Gholamreza Ghodrati Amiri; Bahram Navayineya. "An Experimental Study on Shear Strengthening of RC Lightweight Deep Beams Using CFRP". هنرهای کاربردی, 2, 2, 1393, 9-19. doi: 10.22075/jrce.2014.204
Alsadat Asghari, Azadeh, Tabrizian, Zahra, Hossein Ali Beigy, Morteza, Ghodrati Amiri, Gholamreza, Navayineya, Bahram. (1393). 'An Experimental Study on Shear Strengthening of RC Lightweight Deep Beams Using CFRP', هنرهای کاربردی, 2(2), pp. 9-19. doi: 10.22075/jrce.2014.204
Alsadat Asghari, Azadeh, Tabrizian, Zahra, Hossein Ali Beigy, Morteza, Ghodrati Amiri, Gholamreza, Navayineya, Bahram. An Experimental Study on Shear Strengthening of RC Lightweight Deep Beams Using CFRP. هنرهای کاربردی, 1393; 2(2): 9-19. doi: 10.22075/jrce.2014.204

An Experimental Study on Shear Strengthening of RC Lightweight Deep Beams Using CFRP

Journal of Rehabilitation in Civil Engineering
مقاله 2، دوره 2، شماره 2 - شماره پیاپی 4، آبان 2014، صفحه 9-19    اصل مقاله (690.94 K)
شناسه دیجیتال (DOI): 10.22075/jrce.2014.204
نویسندگان
Azadeh Alsadat Asghari1؛ Zahra Tabrizian* 2؛ Morteza Hossein Ali Beigy3؛ Gholamreza Ghodrati Amiri4؛ Bahram Navayineya3
1PhD Student, College of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran
2PhD candidate, College of Civil Engineering, Babol Noshirvani University of Technology, Babol
3Assistant Professor, College of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran
4Professor, Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science & Technology, Tehran, Iran
چکیده
. 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.
کلیدواژه‌ها
Lightweight concrete؛ deep beams؛ Shear enhancement؛ Analytical modeling؛ CFRP composite
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