FRP加固钢筋混凝土构件裂缝研究进展与探讨  

Research Development and Discussion on the Cracking Behaviors of the Elements Strengthened by Externally Bonded Fiber-reinforced Polymers

作　　者：蔺新艳[1] 曹双寅[1] 黄凤霞[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096

出　　处：《工程抗震与加固改造》2007年第2期59-62,50,共5页Earthquake Resistant Engineering and Retrofitting

摘　　要：外贴FRP材料是一种非常流行的钢筋混凝土结构加固技术,但是与加固后构件承载力相比,在FRP加固构件正常使用性能方面的研究仍不够深入,尚存在许多值得探讨的问题。本文在总结分析国内外已有研究成果的基础上,研究了外贴FRP加固钢筋混凝土构件裂缝开展的机理和特点,分析探讨了我国钢筋混凝土构件裂缝开展性能预测方法用于该类加固构件时的适用性和存在的问题,并探讨了影响FRP加固构件裂缝形成及开展的主要影响因素,最后提出了建立新的裂缝预测模型的必要性。Externally bonded fiber-reinforced polymers （FRP） are becoming more and more popular for strengthening of reinforced concrete （RC） structures. However, the behaviors in the serviceability state of RC member strengthened with FRP, compared to the capacity behaviors, have little been studied. In this paper, based on the review and analysis of current research development, the cracking mechanism and features are studied, and the applicability and problem of the modified formulas according to the China-code used for RC members are analyzed, moreover the contributory factors to the cracking behaviors are discussed and the need for new calculation models is suggested.

关 键 词：FRP 混凝土结构加固 裂缝 研究进展 影响因素 

分 类 号：TU375[建筑科学—结构工程]