Cyclic response of RC beam-column joints strengthened with transverse steel bars and with C-FRP diagonal ties

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY

Acta Polytechnica Pub Date : 2022-05-05 DOI:10.14311/ap.2022.62.0274

Emmanouil Golias, E. Vougioukas, K. Wittemann, G. Kalogeropoulos, C. Karayannis

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引用次数: 1

Abstract

The use of additional bars, internally placed through drill holes, in external beam-column connections subjected to cyclic loading, as shear reinforcement is experimentally investigated.The presented experimental work includes tests of full-scale specimens with different reinforcement arrangements in the joint area, they are as follows: (a) the JB0V control specimen with two (extra) vertical side bars without shear reinforcement in the joint area and, (b) the JB0R joint, same as in the case of the control specimen, without the extra vertical bars, but with four additional steel bars that were placed in holes, which were drilled through the concrete of the joint body for this purpose, (c) the JB0VFX joint, the damaged control specimen repaired and strengthened with C-FRP diagonal ties (rope connections) through the joint area. The effectiveness of these additional bars and ropes as a shear reinforcement on the overall seismic performance of the tested joint is examined.A comparison between the test results of the examined specimens indicated that the applied retrofitting technique is appropriate for the enhancement of the overall hysteretic performance of the beam-column joints in terms of load carrying capacity, stiffness and hysteretic energy dissipation.

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横向钢筋加固和C-FRP斜拉筋加固RC梁柱节点的循环响应

使用额外的杆，内部放置通过钻孔，在外部梁柱连接经受循环荷载，作为抗剪钢筋的实验研究。本试验工作包括节理区域不同配筋布置的足尺试件试验，试验结果如下:(a) JB0V控制样品和两个(额外的)垂直侧栏没有剪切钢筋接头区域,(b) JB0R关节,一样的控制样品,没有额外的垂直条,但有四个额外的钢筋放置在孔,钻的通过联合的具体身体为此,(c) JB0VFX联合,损坏控制标本修复和加强与C-FRP对角线关系通过联合区(绳连接)。这些额外的杆和绳作为抗剪加固对测试节点的整体抗震性能的有效性进行了检验。试验结果对比表明，采用加固技术可以提高梁柱节点在承载能力、刚度和滞回耗能方面的整体滞回性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Polytechnica ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.90

自引率

12.50%

发文量

审稿时长

24 weeks

期刊介绍： Acta Polytechnica is a scientific journal published by CTU in Prague. The main title, Acta Polytechnica, is accompanied by the subtitle Journal of Advanced Engineering, which defines the scope of the journal more precisely - Acta Polytechnica covers a wide spectrum of engineering topics, physics and mathematics. Our aim is to be a high-quality multi-disciplinary journal publishing the results of basic research and also applied research. We place emphasis on the quality of all published papers. The journal should also serve as a bridge between basic research in natural sciences and applied research in all technical disciplines. The innovative research results published by young researchers or by postdoctoral fellows, and also the high-quality papers by researchers from the international scientific community, reflect the good position of CTU in the World University Rankings. We hope that you will ﬁnd our journal interesting, and that it will serve as a valuable source of scientiﬁc information.