薛茹，田子龙，赵雯桐，等. 锈蚀钢筋混凝土梁柱节点抗震性能分析[J].河南理工大学学报(自然科学版)，doi: 10.16186/j.cnki.1673-9787. 2025110031.

XUE R, TIAN Z L, ZHAO W T, et al. Seismic performance analysis of corroded reinforced concrete beam–column joints[J]. Journal of Henan Polytechnic University( Natural Science) , doi: 10.16186/j.cnki.1673-9787. 2025110031.

锈蚀钢筋混凝土梁柱节点抗震性能分析（网络首发）

薛茹¹，田子龙¹，赵雯桐¹，岳亚新²，王志远¹，张涛¹

1.郑州航空工业管理学院 土木与环境学院，河南 郑州 450046；2.西安建筑科技大学 土木工程学院，陕西 西安，710055

摘要：目的 钢筋锈蚀是导致钢筋混凝土（RC）结构耐久性退化的主要因素，对框架结构的核心构件梁柱节点来说影响尤为显著。本文针对锈蚀作用下梁柱节点的受力机理与性能退化规律展开系统研究。方法 设计并制作4个足尺RC梁柱节点试件，采用干湿循环条件下电化学加速锈蚀法获得不同节点钢筋锈蚀率，并进行低周往复加载试验，分析节点的滞回性能及破坏特征。在此基础上，对BCJE模型中的剪切块参数进行修正，建立了锈蚀RC梁柱节点的有限元模型，并结合试验结果做进一步验证。在此基础上开展参数化分析，探讨轴压比、箍筋锈蚀率、配箍率及混凝土强度对锈蚀节点抗震性能的综合影响。结果 研究表明，钢筋锈蚀会显著降低节点的承载力与延性，纵筋粘结滑移变形增大，核心区剪切变形占比降低，节点破坏模式由核心区剪切破坏向梁端脆性破坏转变。修正后的模型能较准确地反映锈蚀节点的滞回特征，计算结果与试验结果吻合良好。进一步参数分析显示，箍筋锈蚀率对节点抗震性能最为不利；轴压比则呈现双重效应，适度增大可提升节点峰值抗剪承载力，但同时骨架曲线下降段更加陡峭，脆性破坏特征更加明显。结论 本研究揭示了钢筋锈蚀作用下RC梁柱节点的受力退化规律，可为近海环境RC结构的抗震设计与耐久性评估提供参考。

关键词：RC梁柱节点；钢筋锈蚀；BCJE模型；有限元模拟；抗震性能

doi: 10.16186/j.cnki.1673-9787. 2025110031

基金项目: 国家自然科学基金资助项目（52208220）；河南省科技攻关资助项目（252102321143, 242102321017）

收稿日期：2025-11-23

修回日期：2026-01-13

网络首发日期：2026-03-16

Seismic performance analysis of corroded reinforced concrete beam–column joints(Online)

XueRu¹，TianZilong¹，ZhaoWentong¹，YueYaxin²，WangZhiyuan²，ZhangTao¹

1. School of Civil Engineering and Architecture，Zhengzhou University of Aeronautics，Zhengzhou 450046，Henan，China; 2. School of Civil Engineering，Xi’an University of Architecture and Technology，Xi’an 710055，Shaanxi，China

Abstract: Objectives Reinforcement corrosion is a primary cause of durability deterioration in reinforced concrete (RC) structures and has a particularly pronounced effect on beam–column joints, the critical components of frame systems. This study systematically investigates the mechanical mechanisms and performance degradation of beam–column joints under corrosion. Methods Four full-scale RC beam–column joint specimens were designed and fabricated. Different reinforcement corrosion levels in the joints were produced by an electrochemical accelerated corrosion method under dry–wet cycling. Low-cycle reversed loading tests were carried out to examine the joints’ hysteretic behavior and failure characteristics. On this basis, the shear-panel parameters in the BCJE model were revised, and a finite element model for corroded RC joints was established and validated against the experimental results. Further parametric studies were then performed to explore the combined effects of axial compression ratio, stirrup corrosion level, transverse reinforcement ratio and concrete strength on the seismic performance of corroded joints. Results Rebar corrosion significantly reduces the load-carrying capacity and ductility of the joints, increases the bond–slip deformation of longitudinal reinforcement, decreases the proportion of shear deformation in the core region, and shifts the failure mode from core-panel shear failure to brittle beam-end failure. The modified BCJE model accurately captures the hysteretic behavior of corroded joints, showing good agreement with the experimental results. Parametric analyses indicate that stirrup corrosion rate is the most detrimental factor to joint performance, while the axial load ratio exhibits a dual effect: moderate increase enhances peak shear strength, but also results in a steeper descending branch of the skeleton curve, leading to more brittle failure characteristics. Conclusions This study clarifies the deterioration mechanisms of RC beam–column joints subjected to rebar corrosion and provides a useful reference for the seismic design and durability assessment of RC structures in marine environments.

Key words: RC beam-column joints; reinforcement corrosion; BCJE model; finite element simulation; seismic performance