Effects of Using Multilayers of High Resistance AFRP on Loading Capacity of Reinforced Concrete Beams in Comparison with Low Resistance AFRP Considering EBROG Method
محورهای موضوعی : Structural EngineeringBamshad Sadjadi Manizani 1 , Shahriar Tavousi Tafreshi 2 , Abbas Akbarpour Nikghalb 3
1 - Young Researchers and Elite Club, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
2 - Assistant Professor, Islamic Azad University, Central Tehran, Iran
3 - Assistant Professor, Islamic Azad University, South Tehran, Iran
کلید واژه: High Resistance, Low Resistance, Aramid Fiber Reinforced Polymer (AFRP), strengthening, Externally Bonded Reinforcement on Grooves (EBROG), loading capacity, ABAQUS program,
چکیده مقاله :
Externally Bonded Reinforcement on Grooves (EBROG) is a new method that has been introduced to postpone or eliminate debonding of FRP sheets from concrete surface in concrete beams strengthened for flexure and increase loading capacity. For strengthening reinforced conceret beams in strructure, use of different types of FRP like: laminate, AFRP, CFRP, and GFRP. By there is some differences between these kinds related to sensitivity to temperature, shear sterength, The aim of the current study is to examine the efficiency of Externally Bonded Reinforcement on Grooves method on Concrete beams' loading capacity when used under multilayers of high resistance AFRP sheet and comparing it with the results of multilayers of low resistance AFRP. For this purpose , beam specimens with dimension 120*140*1000 mm were modeled in ABAQUS program. According to the analysis, loading capacity is increased when used multilayers of high resistance AFRP instead of using multilayers of low resistance AFRP. Finally, diagram shown that use of multilayers of AFRP has better results than use of one layer of AFRP.
