用混合玻璃纤维增强聚合物和不锈钢条加固的海水海砂珊瑚骨料混凝土柱在轴向压缩下的响应

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Reinforced Plastics and Composites Pub Date : 2024-08-16 DOI:10.1177/07316844241272977

Qi Cao, Zongke Jia, Zhimin Wu, Zhongguo J Ma

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引用次数: 0

摘要

通过利用由海水、海砂和珊瑚骨料（SSCC）组成的混凝土与混合加固相结合，混凝土结构在岛屿工程和海洋结构中的潜在应用前景日益扩大。这种创新方法有效地解决了淡水和河沙资源日益减少以及钢筋锈蚀的问题。本研究探讨了使用不锈钢钢筋和 GFRP 钢筋组合加固的柱子的轴向承载能力和延展性。研究对 36 根支柱进行了测试，这些支柱的强度（30 兆帕、40 兆帕、50 兆帕）、加固类型（GFRP 棒（G 组）、不锈钢棒（S 组）、GFRP 棒-不锈钢棒（GS 组））和加固比例（1.01%、1.56%、2.26%）各不相同。结果表明，柱子的轴向承载能力与强度等级和配筋率呈正相关。一般来说，用不锈钢钢筋加固的 SSCC 柱（S-SSCC）的轴向承载能力最高，其次是用 GFRP 钢筋和不锈钢钢筋组合加固的 SSCC 柱（GS-SSCC），而用 GFRP 钢筋加固的 SSCC 柱（G-SSCC）的轴向承载能力最低。此外，轴向承载能力是利用 ACI 440、CSA S806 和有限元软件 ABAQUS 确定的。分析模型得出的结果与实验结果非常一致。延性分析结果表明，与仅使用 GFRP 钢筋的柱子相比，使用混合加固的柱子可显著提高延性。

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Response of seawater sea sand coral aggregate concrete columns reinforced with hybrid glass fiber reinforced polymer and stainless steel bars under axial compression

The potential application prospects for concrete structure in island engineering and marine structures are increasing through the utilization of concrete composed of seawater, sea sand and coral aggregates (SSCC) combined with hybrid reinforcement. This innovative approach effectively addresses the diminishing availability of freshwater and river sand resources, as well as steel corrosion. This study explores the axial load carrying capacity and ductility of columns reinforced with combination of stainless steel bars and GFRP bars. The study conducted tests on 36 columns, varying in strengths (30 MPa, 40 MPa, 50 MPa), reinforcement types (GFRP bars (G group), stainless steel bars (S group), GFRP bars-stainless steel bars (GS group)), and reinforcement ratios (1.01%, 1.56%, 2.26%). The results exhibit positive correlation between the axial load carrying capacity of the column and both the strength grade and reinforcement ratio. In general, SSCC columns reinforced with stainless steel bars (S-SSCC) exhibit the highest axial load carrying capacity, followed by those reinforced with combination of GFRP bars and stainless steel bars (GS-SSCC), and SSCC columns reinforced with GFRP bars (G-SSCC) exhibit the lowest axial load carrying capacity. Furthermore, the axial load carrying capacity was determined utilizing ACI 440, CSA S806 and the finite element software ABAQUS. The results derived from the analytical model exhibited strong agreement with those obtained experimentally. Ductility analysis results suggest that columns with hybrid reinforcement can significantly improve ductility compared to those with only GFRP bars.

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来源期刊

Journal of Reinforced Plastics and Composites 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.50%

发文量

审稿时长

1.3 months

期刊介绍： The Journal of Reinforced Plastics and Composites is a fully peer-reviewed international journal that publishes original research and review articles on a broad range of today''s reinforced plastics and composites including areas in: Constituent materials: matrix materials, reinforcements and coatings. Properties and performance: The results of testing, predictive models, and in-service evaluation of a wide range of materials are published, providing the reader with extensive properties data for reference. Analysis and design: Frequency reports on these subjects inform the reader of analytical techniques, design processes and the many design options available in materials composition. Processing and fabrication: There is increased interest among materials engineers in cost-effective processing. Applications: Reports on new materials R&D are often related to the service requirements of specific application areas, such as automotive, marine, construction and aviation. Reports on special topics are regularly included such as recycling, environmental effects, novel materials, computer-aided design, predictive modelling, and "smart" composite materials. "The articles in the Journal of Reinforced Plastics and Products are must reading for engineers in industry and for researchers working on leading edge problems" Professor Emeritus Stephen W Tsai National Sun Yat-sen University, Taiwan This journal is a member of the Committee on Publication Ethics (COPE).