A Comparative Study of the Structural Behavior of Concrete Beams Reinforced with Different Configurations of GFRP and Steel Bars

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-02 DOI:10.31026/j.eng.2024.04.12

Shaysh Aziz Mohammed, AbdulMuttailb Issa Said

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Abstract

This study examined experimentally and numerically the performance of five concrete beams reinforced with longitudinal and transverse bars made of Glass Fiber Reinforced Polymer (GFRP) or steel. All beams had the same dimensions of 2700 mm in length, 180 mm in width, and 260 mm in depth. The beams were classified into two groups with different variables and compared with a reference beam reinforced with longitudinal and transverse steel bars. The first group consisted of two beams with longitudinal GFRP bars and no stirrups, varying the main reinforcement ratio. The second group comprised two beams with longitudinal GFRP bars and transverse GFRP or steel stirrups, varying the stirrup type. The results indicated that the beams with GFRP bars improved their flexural strength for different ratios but had limited shear resistance when using GFRP stirrups because increased deflection causes the number and width of cracks to grow, reducing the shear strength. All the tested beams exhibited linear elastic behavior until failure, with GFRP being more brittle than steel due to no yield point or plastic behavior in GFRP. The numerical simulation of the five beams using ABAQUS software showed good agreement with the experimental data obtained in the laboratory.

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使用不同配置的 GFRP 和钢筋加固混凝土梁的结构行为比较研究

本研究通过实验和数值计算检验了五根使用玻璃纤维增强聚合物（GFRP）或钢材制成的纵向和横向钢筋加固的混凝土梁的性能。所有梁的尺寸相同，长 2700 毫米、宽 180 毫米、深 260 毫米。这些梁按不同的变量分为两组，并与用纵向和横向钢筋加固的参考梁进行比较。第一组包括两根带有纵向 GFRP 钢筋且无箍筋的梁，主筋比例各不相同。第二组包括两根带纵向 GFRP 钢筋和横向 GFRP 或钢箍筋的梁，箍筋类型各不相同。结果表明，使用 GFRP 杆件的梁在不同配筋比下的抗弯强度都有所提高，但使用 GFRP 箍筋时的抗剪性能有限，因为挠度增加会导致裂缝数量和宽度增加，从而降低抗剪强度。由于 GFRP 没有屈服点或塑性行为，因此 GFRP 比钢更脆。使用 ABAQUS 软件对五根横梁进行的数值模拟结果与在实验室获得的实验数据十分吻合。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.