三向织物约束混凝土圆柱轴压性能研究

doi:10.19936/j.cnki.2096-8000.20221028.014

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (10): 91-98.DOI: 10.19936/j.cnki.2096-8000.20221028.014

三向织物约束混凝土圆柱轴压性能研究

周毅^1,2, 张洪华^1,2, 李炜^1,2,3*

1.东华大学纺织学院,上海201620;
2.东华大学民用航空复合材料协同创新中心,上海201620;
3.产业用纺织品教育部工程研究中心,上海201620

收稿日期:2021-10-29 出版日期:2022-10-28 发布日期:2022-11-01
通讯作者: 李炜(1971-),女,博士,教授,主要从事纺织复合材料的制备、性能与工艺方面的研究,liwei@dhu.edu.cn。
作者简介:周毅(1997-),男,硕士研究生,主要从事纺织复合材料的制备与性能方面的研究。

Axial compressive behavior of triaxial woven fabric confined concrete cylinder

ZHOU Yi^1,2, ZHANG Hong-hua^1,2, LI Wei^1,2,3*

1. College of Textiles, Donghua University, Shanghai 201620, China;
2. Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China;
3. Engineering Research Center of Technical Textile, Ministry Education, Shanghai 201620, China

Received:2021-10-29 Online:2022-10-28 Published:2022-11-01

摘要/Abstract

摘要： 本文采用三向织物对混凝土圆柱进行加固,分别使用了纯碳纤维、纯玻璃纤维及碳玻混杂三向织物,测试了约束圆柱的轴压性能,并利用DIC应变检测和声发射检测手段,对压缩过程、试样破坏形式和纱线受力情况进行了分析。结果表明:三向织物加固混凝土柱在抗压强度和形变方面有明显提高,其中碳纤维加固混凝土圆柱强度提高了92.1%;玻璃纤维加固混凝土圆柱形变量提高了202%。通过对结果的对比分析,发现其中碳玻混杂三向织物约束混凝土在强度和形变方面都有较大提升,值得注意的是,经纱玻璃纤维、纬纱碳纤维的约束效果明显优于经纱碳纤维、纬纱玻璃纤维。研究结果为分析三向织物加固混凝土柱轴压性能提供了理论依据,对三向织物约束混凝土应用具有一定的参考价值。

关键词: 三向织物, 混凝土加固, 力学性能, 局部应变, 受力分析

Abstract: This paper adopts carbon fiber triaxial woven fabric, glass fiber triaxial woven fabric and carbon glass hybrid triaxial woven fabric respectively to confine concrete cylinder, and test the axial compression properties of constrained cylinder. The process of compression, failure mode of samples and the stress of yarns were analyzed by digital image correlation (DIC) technology and acoustic emission technology. The results showed that the concrete column confined by triaxial woven fabric had an obviously improved compressive strength and deformation quantity, for which the confined concrete cylinder by carbon fiber improved 92.1% in compressive strength and confined concrete cylinder by glass fiber improved 202% in deformation quantity. Through the comparative analysis of the results, it is found that the strength and deformation of carbon glass hybrid triaxial woven fabric confined concrete have been greatly improved. It is worth noting that the restraint effect of glass fiber as warp and carbon fiber as weft is obviously better than that of carbon fiber as warp and glass fiber as weft. The results provide a theoretical basis for analyzing the axial compression properties of the triaxial woven fabric confined concrete cylinder, and have a certain reference value for the application of triaxial woven fabric confined concrete.

Key words: triaxial woven fabric, concrete reinforcement, mechanical properties, local strain, force analysis

中图分类号:

TB332

周毅, 张洪华, 李炜. 三向织物约束混凝土圆柱轴压性能研究[J]. 复合材料科学与工程, 2022, 0(10): 91-98.

ZHOU Yi, ZHANG Hong-hua, LI Wei. Axial compressive behavior of triaxial woven fabric confined concrete cylinder[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(10): 91-98.

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三向织物约束混凝土圆柱轴压性能研究

Axial compressive behavior of triaxial woven fabric confined concrete cylinder

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