|本期目录/Table of Contents|

[1]谢建和,黄昆泓,李自坚,等.BFRP和CFRP加固受弯混凝土界面疲劳性能试验[J].建筑科学与工程学报,2015,32(04):53-59.
 XIE Jian-he,HUANG Kun-hong,LI Zi-jian,et al.Experiment on Fatigue Behaviors of Flexural Concrete Interface Strengthened with BFRP and CFRP[J].Journal of Architecture and Civil Engineering,2015,32(04):53-59.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
32卷
期数:
2015年04期
页码:
53-59
栏目:
出版日期:
2015-07-21

文章信息/Info

Title:
Experiment on Fatigue Behaviors of Flexural Concrete Interface Strengthened with BFRP and CFRP
作者:
谢建和黄昆泓李自坚张 洹许光辉
广东工业大学土木与交通工程学院
Author(s):
XIE Jian-he HUANG Kun-hong LI Zi-jian ZHANG Huan XU Guang-hui
School of Civil and Transportation Engineering, Guangdong University of Technology
关键词:
结构工程剥离承载力玄武岩纤维碳纤维增强复合材料界面疲劳
Keywords:
structure engineering debonding load-carrying capacity basalt fiber reinforced polymer carbon fiber reinforced polymer interface fatigue
分类号:
-
DOI:
-
文献标志码:
A
摘要:
以纤维增强复合材料(FRP)片材外贴混凝土受弯构件为研究对象,探讨玄武岩纤维(BFRP)和碳纤维增强复合材料(CFRP)加固混凝土界面疲劳性能。通过实施四点弯曲加载试验,研究了BFRP和CFRP加固混凝土界面疲劳破坏模式、界面疲劳裂缝扩展规律以及构件跨中挠度和FRP应变随加载循环次数的变化规律,并对BFRP和CFRP加固混凝土界面的静载剥离承载力和疲劳寿命进行了分析,给出了BFRP和CFRP加固混凝土界面的疲劳强度。研究结果表明:与BFRP混凝土界面相比,CFRP混凝土界面的静载剥离承载力提高了约50%,其疲劳寿命也明显提高;既有疲劳历程对BFRP和CFRP加固混凝土界面的静载剥离承载力影响不大。
Abstract:
Taking the flexurally strengthened concrete members with fiber reinforced polymer (FRP) as the research object, the fatigue behaviors of the concrete interface strengthened with basalt fiber reinforced polymer (BFRP) and carbon fiber reinforced polymer (CFRP) were investigated. Based on a series of fourpoint bending loading tests, the fatigue failure modes and the propagation law of interface crack strengthened with BFRP and CFRP, as well as the evolution of midspan deflection and FRP strain change rule with loading cycle numbers were studied. Moreover, the debonding loadcarrying capacity and the fatigue life of the BFRPconcrete and CFRPconcrete interface were analyzed, and the fatigue strength of the concrete interface flexurally strengthened with BFRP and CFRP was proposed. The study results show that compared with the concrete members strengthened with BFRP, the debonding loadcarrying capacity of those with CFRP increases about 50%, and the fatigue life of those with CFRP is significantly longer. The effects of prefatigue damage are slight on the debonding load-carrying capacity of BFRPconcrete and CFRPconcrete interface.

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备注/Memo

备注/Memo:
更新日期/Last Update: 2015-07-21