Flexural Testing of High Strength Reinforced Concrete Beams Strengthened with CFRP Sheets
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 22، شماره: 2
سال انتشار: 1388
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 228
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شناسه ملی سند علمی:
JR_IJE-22-2_004
تاریخ نمایه سازی: 18 بهمن 1400
چکیده مقاله:
The objective of this study is to investigate the effectiveness of externally bonded CFRP sheets to increase the flexural strength of reinforced high strength concrete (HSC) beams. Four-point bending flexural tests to complete failure on six concrete beams, strengthened with different layouts of CFRP sheets were conducted. Three-dimensional nonlinear finite element (FE) models were adopted by ANSYS to examine the behavior of the test beams. More specifically, the strength and ductility of the beams is investigated, as the number of FRP layers and tensile reinforcement bar ratio changed. With the exception of the control beam, one to four layers of CFRP were applied to the specimens. The ductility characteristics of the test beams were evaluated in terms of the displacement, curvature and energy ductility index. It was found that for all the reported beams, the energy ductility value is about two times higher than the displacement ductility values. The crack patterns in the beams are also presented. The load deflection plots obtained from numerical study show good agreement with the experimental results.
کلیدواژه ها:
نویسندگان
A. A. Maghsoudi
Civil Engineering, Shahid Bahonar University of Kerman
Reza Rahgozar
Civil Engineering, Shahid Bahonar University of Kerman
seyed hamid hashemi
Engineering, Arak University