矩形纤维增强复合材料（FRP）约束混凝土柱轴压性能研究进展

邱吉策; 杨树桐; 陈贵鹏; 王言磊; 范国玺; 张彦龙; 王金梁

doi:10.3724/j.gyjzG25081907

矩形纤维增强复合材料（FRP）约束混凝土柱轴压性能研究进展

doi: 10.3724/j.gyjzG25081907

1. 中国海洋大学工程学院, 山东青岛 266404;
2. 大连理工大学建设工程学院, 辽宁大连 116024;
3. 中国海洋大学电子工程学院, 山东青岛 266404

基金项目:

国家自然科学基金项目（51978126、52508322和51778102）；山东省自然科学基金青年项目（ZR2024QE308）；中央高校基本科研业务费专项（202513041）；青岛市博士后应用研究项目（QDBSH20240102009）；大学生创新训练项目（X2025104230038）。

详细信息

作者简介:
邱吉策，硕士研究生，主要从事FRP约束混凝土方面的研究。

通讯作者:
陈贵鹏，讲师，主要从事FRP-混凝土-钢组合结构方面的研究，chenguipeng1993@163.com。

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出版历程
- 收稿日期: 2025-08-19
- 刊出日期: 2025-10-31

Research Progress on the Axial Compressive Behavior of Rectangular FRP-Confined Concrete Columns

1. College of Engineering, Ocean University of China, Qingdao 266404, China;
2. School of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China;
3. School of Electronic Engineering, Ocean University of China, Qingdao 266404, China

摘要

摘要: 纤维增强复合材料（FRP）是一种轻质高强、耐腐蚀的材料，在混凝土柱外侧沿环向包裹FRP可以显著提升构件的受力性能和耐久性。现有研究对圆形FRP约束混凝土柱的研究已经非常充分，相比于圆形截面，矩形FRP约束混凝土柱的相关研究的系统性还有待于进一步提升。为此，以矩形FRP约束混凝土柱为研究对象，针对构件的轴压性能，从试验研究和理论模型两方面进行了梳理归纳。试验研究方面建立了包含227个试件的数据库，进一步揭示了截面长宽比、倒角半径、混凝土强度、FRP约束水平、截面尺寸等关键参数对约束混凝土受力性能的影响规律和内在机理，明确了关键设计参数的取值限制。理论模型方面梳理了矩形FRP约束混凝土的三类应力-应变关系模型（一段式、两段式和三段式）和极限状态计算式，探讨了FRP应变有效系数的计算模型，为矩形FRP约束混凝土柱的合理设计提供参考依据。
- 纤维增强复合材料 /
- 矩形截面 /
- 混凝土柱 /
- 轴压性能 /
- 理论模型
Abstract: Fiber-reinforced polymer （FRP） composites are lightweight， high-strength， and corrosion-resistant materials. Confining concrete columns by externally wrapping FRP in the hoop direction can significantly enhance their structural performance and durability. While extensive research exists on circular FRP-confined concrete columns， the systematic study of rectangular FRP-confined concrete columns remains comparatively less developed. Therefore， this paper focuses on rectangular FRP-confined concrete columns， presenting a comprehensive review of their axial compressive behavior from both experimental and theoretical modeling perspectives. Regarding experimental research， a database compiling 227 specimens was established. This database was used to investigate the influence mechanism of key parameters， including sectional aspect ratio， corner radius， concrete strength， FRP confinement level， and column size on the mechanical properties of the confined concrete. Valid ranges for these critical design parameters were identified. Regarding theoretical models， three categories of stress-strain relationship models for rectangular FRP-confined concrete （namely single-segment， two-segment， and three-segment models） and corresponding equations for ultimate states were reviewed. The calculation model for the FRP strain efficiency factor was also discussed. The findings of this study offer valuable references for the rational design of rectangular FRP-confined concrete columns.
- fiber-reinforced polymer /
- rectangular section /
- concrete column /
- axial compressive behavior /
- theoretical model

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