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Behavior of Eccentrically Loaded Slender Concrete Columns Reinforced with GFRP Bars
Journal of Physics: Conference Series Pub Date : 2021-08-31 , DOI: 10.1088/1742-6596/1973/1/012218
Haitham Al-Thairy 1 , Marwa Azeez Al-Hamzawi 2
Affiliation  

This paper presents an experimental investigation on the behaviour of concrete columns reinforced with glass fibre reinforced polymers GFRP bars under concentric and eccentric loads. Six RC column specimens have been considered in the experimental tests with a cross section dimension of (135 mm 135mm) at the middle portion of columns and (250 mm 135 mm) (width depth) at the corbel with a total length of 1150 mm with the length between corbels (middle part) was 710 mm. Three specimens have been represented the reference specimens which are reinforced with steel bars and the other three were reinforced with GFRP bars. Tow variables have been considered in the experimental tests: the type of reinforcement (GFRP and steel) and the eccentricity ratio (e/h). All columns have been subjected to different values of eccentricity ratio (e/h): 0, 0.5, and 1. It has been concluded that the ultimate load capacity of columns reinforced with GFRP bars decreases by about 27.13% and 94.67% compared to columns reinforced with steel bars under eccentricity ratios (e/h=0) and (e/h =0.5), respectively. Whereas, ultimate load increases by about (4.79%) for the columns reinforced with GFRP bars compared to columns reinforced with steel bars at eccentricity ratios (e/h=1). The result have also shown that all specimens that have been subjected to eccentricity ratio (e/h > 0) failed by compression failure.



中文翻译:

用GFRP筋加固的偏心细长混凝土柱的性能

本文对用玻璃纤维增​​强聚合物 GFRP 钢筋加固的混凝土柱在同心和偏心载荷下的行为进行了实验研究。试验中考虑了 6 个钢筋混凝土柱试件,柱中部截面尺寸为(135 mm×135mm),牛腿处截面尺寸为(250 mm×135 mm),总长度为 1150 mm。牛腿(中间部分)之间的长度为 710 毫米。三个试件是用钢筋加固的参考试件,另外三个用 GFRP 钢筋加固。在实验测试中考虑了两个变量:钢筋类型(GFRP 和钢)和偏心比 (e/h)。所有柱子都经受了不同的偏心率比 (e/h) 值:0、0.5 和 1。得出的结论是,在偏心比(e/h=0)和(e/h=0.5)下,GFRP筋加固柱的极限承载力分别比钢筋加固柱降低了约27.13%和94.67% . 而在偏心比 (e/h=1) 下,与用钢筋加固的柱相比,用 GFRP 钢筋加固的柱的极限荷载增加了约 (4.79%)。结果还表明,所有经受偏心比 (e/h > 0) 的试样均因压缩失效而失效。79%) 用 GFRP 钢筋加固的柱与在偏心比 (e/h=1) 下用钢筋加固的柱相比。结果还表明,所有经受偏心比 (e/h > 0) 的试样均因压缩失效而失效。79%) 用 GFRP 钢筋加固的柱与在偏心比 (e/h=1) 下用钢筋加固的柱相比。结果还表明,所有经受偏心比 (e/h > 0) 的试样均因压缩失效而失效。

更新日期:2021-08-31
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