THE EFFECT OF MULTI LAYERS OF CFRP ON LOADING CAPACITY OF STRENGTHENED REINFORCED CONCRETE BEAMS BY EBROG METHOD AND COMPARING IT BY USING ONE LAYER OF AFRP
سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 325
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شناسه ملی سند علمی:
SEE07_407
تاریخ نمایه سازی: 29 آذر 1399
چکیده مقاله:
Externally Bonded Reinforcement On Grooves (EBROG) is a new promising method that has been introduced at Isfahan University of Technology (IUT) to postpone or eliminate debonding of FRP sheets from concrete surface in concrete beams strengthened for flexure. Experiments have shown that the probability of debonding when attached to concrete substrate using EBROG method is much lower than the other methods; and in some cases debonding is completely eliminated. The aim of the current study is to examine the efficacy of grooving method when used under multilayer CFRP sheets analytical and comparing it with the results of one layer of AFRP. For this purpose, beam specimens with dimension 120*140*1000 mm were modeled in ABAQUS program. We assigned concrete damage plasticity for concrete, and fully elasto-plastic for both steel and CFRP and AFRP. We use dynamic,explicit analysis and meshed the specimens by o.o2m size. The interaction between mesh bar and concrete beam was embedded and interaction between CFRP, AFRP and concrete beam was tie. Using mesh bar is related to preventing any shear failure . Finally, the results shown that using 3 layers of CFRP is much better than 1 layer of AFRP . The rate of increment loading capacity is about 51.85 percent .
کلیدواژه ها:
Aramid Fiber Reinforced Polymer ( AFRP ) ، strengthening ، debonding ، Externally Bonded Reinforcement On Grooves ( EBROG ) ، ABAQUS program
نویسندگان
Bamshad SADJADI MANIZANI
Student, Islamic Azad University Eslamshahr Branch, Tehran, Iran
Shahriar TAVOUSI TAFRESHI
Assistant Professor, Islamic Azad University Central Tehran Branch, Tehran, Iran
Abbas AKBARPOUR NIKGHALB
Assistant Professor, Islamic Azad University South Tehran Branch, Tehran, Iran