外贴FRP加固钢筋混凝土梁抗弯疲劳性能研究进展

doi:10.19936/j.cnki.2096-8000.20210728.018

摘要/Abstract

摘要： 纤维增强复合材料(Fiber Reinforced Polymer,简称“FRP”)因其轻质、高强、抗疲劳性能好等优点被广泛用于加固工程中。在疲劳荷载作用下,外贴FRP加固钢筋混凝土梁中的各材料性能以及FRP-混凝土界面粘结性能不断劣化,既有损伤不断累积,从而大大降低了加固梁的使用安全性。本文从试验研究、数值模拟以及理论分析三方面对外贴FRP加固钢筋混凝土梁的抗弯疲劳性能研究进行了详细总结,并对FRP-混凝土粘结界面和锈蚀钢筋混凝土加固梁的疲劳性能进行了介绍,分析了现有研究中存在的不足,并为今后的研究方向提出一些建议。

关键词: 外贴FRP加固, 钢筋混凝土梁, 粘结界面, 抗弯疲劳性能, 复合材料

Abstract: Fiber reinforced polymer (FRP) is widely used in reinforcement engineering because of its light weight, high strength and good fatigue resistance. Under the action of fatigue load, the properties of various materials and the interface bond between FRP and concrete are deteriorating, and the existing damage is accumulating, which greatly reduces the safety of reinforced concrete beams. In this paper, the experimental research, numerical simulation and theoretical analysis of the flexural fatigue performance of reinforced concrete beams strengthened with externally bonded FRP are summarized in detail, and the fatigue performance of FRP-concrete bonding interface and corroded reinforced concrete strengthened beams are introduced. The shortcomings of existing research are analyzed, and some suggestions for the direction of future research are put forward.

Key words: strengthened with externally bonded FRP, RC beams, bonding interface, flexural fatigue behavior, composites

中图分类号:

TB332

张智梅, 杨铭. 外贴FRP加固钢筋混凝土梁抗弯疲劳性能研究进展[J]. 复合材料科学与工程, 2021, 0(7): 121-128.

ZHANG Zhi-mei, YANG Ming. Research progress of fatigue performance of RC beams strengthened with externally bonded FRP[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(7): 121-128.

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