Interface peeling criteria for fiber-reinforced composite (FRP) reinforcement in masonry structures
纤维增强复合材料加固砌体结构的界面剥离准则

摘要

砌体结构因抗拉、抗剪强度低，抗震性能不足，常需加固。纤维增强复合材料（FRP）因诸多优势在砌体加固领域应用广泛。但加固中界面剥离问题突出，影响加固效果与结构安全。本文聚焦纤维增强复合材料加固砌体结构的界面剥离准则，深入剖析界面剥离的破坏模式，从材料特性、粘结性能、受力状态等多方面探讨影响因素，构建全面准确的界面剥离准则数学模型，并进行验证与应用分析。研究成果为 FRP 加固砌体结构设计提供关键依据，可有效提升加固结构可靠性与耐久性，对保障砌体结构安全、推动加固技术发展意义重大。

Abstract

Masonry structures, due to their low tensile and shear strength and inadequate seismic performance, often require reinforcement. While fiber-reinforced composites (FRP) demonstrate extensive applications in masonry reinforcement owing to their multiple advantages, interface peeling remains a prominent issue during reinforcement processes, significantly impacting both reinforcement effectiveness and structural safety. This study focuses on establishing interface peeling criteria for FRP-reinforced masonry structures. Through comprehensive analysis of failure modes and influencing factors—including material properties, bonding performance, and stress states—we develop a comprehensive mathematical model for interface peeling criteria, which is subsequently validated and applied through case studies. The research findings provide critical guidance for FRP-reinforced masonry structure design, effectively enhancing structural reliability and durability. These advancements hold significant implications for ensuring masonry safety and advancing reinforcement technology development.