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用于增强混凝土力学性能的复合纤维包裹技术

Composite Fiber Wrapping Techniques for Enhanced Concrete Mechanics.

作者信息

Li Zhongxu, Hao Guojun, Du Haoran, Fu Tianjian, Liu Depei, Huang Yuxiang, Ji Yongcheng

机构信息

College of Aulin, Northeast Forestry University, Harbin 150040, China.

College of Civil Engineering and Transportation, Northeast Forestry University, Harbin 150040, China.

出版信息

Polymers (Basel). 2024 Oct 5;16(19):2820. doi: 10.3390/polym16192820.

DOI:10.3390/polym16192820
PMID:39408529
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11479214/
Abstract

This study systematically investigates the enhancement effects of different fiber-reinforced polymer (FRP) materials on the axial compressive performance of concrete. Through experimental evaluations of single-layer, double-layer, and composite FRP reinforcement techniques, the impact of various FRP materials and their combinations on concrete's axial compressive strength and deformation characteristics was assessed. The results indicate that single-layer CFRP reinforcement significantly improves concrete axial compressive strength and stiffness, while double-layer CFRP further optimizes stress distribution and load-bearing capacity. Among the composite FRP reinforcements, the combination with CFRP as the outer layer demonstrated superior performance in enhancing the overall structural integrity. Additionally, numerical analyses of the mechanical behavior of the reinforced structures were conducted using ABAQUS 2023HF2 finite element software, which validated the experimental findings and elucidated the mechanisms by which FRP influences the internal stress field of concrete. This research provides theoretical support and empirical data for the optimized design and practical application of FRP reinforcement technologies in engineering.

摘要

本研究系统地研究了不同纤维增强聚合物（FRP）材料对混凝土轴向抗压性能的增强效果。通过对单层、双层和复合FRP加固技术的实验评估，评估了各种FRP材料及其组合对混凝土轴向抗压强度和变形特性的影响。结果表明，单层CFRP加固显著提高了混凝土的轴向抗压强度和刚度，而双层CFRP进一步优化了应力分布和承载能力。在复合FRP加固中，以外层为CFRP的组合在增强整体结构完整性方面表现出卓越性能。此外，使用ABAQUS 2023HF2有限元软件对加固结构的力学行为进行了数值分析，验证了实验结果，并阐明了FRP影响混凝土内部应力场的机制。本研究为FRP加固技术在工程中的优化设计和实际应用提供了理论支持和经验数据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/f6f6b1bd3405/polymers-16-02820-g020a.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/f6f6b1bd3405/polymers-16-02820-g020a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/c2c9fe8f2fb8/polymers-16-02820-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/3df9a4f88e9b/polymers-16-02820-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/846625bab608/polymers-16-02820-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/9d214d44e87a/polymers-16-02820-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/85caaba1bc17/polymers-16-02820-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/17976cef7b14/polymers-16-02820-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/46151deef9a2/polymers-16-02820-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/96a683a0a1ee/polymers-16-02820-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/9c39c5f2d935/polymers-16-02820-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/9ef3fba803d9/polymers-16-02820-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/f244235fc8fd/polymers-16-02820-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/3e5c93eb4192/polymers-16-02820-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/304725e11524/polymers-16-02820-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/f89e4a034691/polymers-16-02820-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/a62630b924fb/polymers-16-02820-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/01e94ca7d352/polymers-16-02820-g019.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a57/11479214/f6f6b1bd3405/polymers-16-02820-g020a.jpg

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本文引用的文献

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2
Durability Investigation of Carbon Fiber Reinforced Concrete under Salt-Freeze Coupling Effect.盐冻耦合作用下碳纤维增强混凝土耐久性研究
Materials (Basel). 2021 Nov 13;14(22):6856. doi: 10.3390/ma14226856.
3
Mechanical Characterization of the Tensile Properties of Glass Fiber and Its Reinforced Polymer (GFRP) Composite under Varying Strain Rates and Temperatures.
玻璃纤维及其增强聚合物（GFRP）复合材料在不同应变速率和温度下拉伸性能的力学表征
Polymers (Basel). 2016 May 19;8(5):196. doi: 10.3390/polym8050196.