Prediction of premature separation of bonded CFRP plates from strengthened steel beams using a fracture criterion

被引:12
作者
Lenwari, A [1 ]
Thepchatri, T
Watanabe, E
机构
[1] Chulalongkorn Univ, Dept Civil Engn, Bangkok 10330, Thailand
[2] Kyoto Univ, Dept Civil Engn, Kyoto 6068501, Japan
关键词
fracture; stress singularity; strengthening; CFRP; steel beams; bridges; bi-material wedges; double strap joints;
D O I
10.12989/sem.2002.14.5.565
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper presents a method for predicting premature separation of carbon fiber reinforced plastic (CFR-P) plates from strengthened steel beams. The fracture criterion based on material-induced singularity is formulated in terms of a singular intensity factor. Static test on double strap joints was selected to provide the critical stress intensity factor in the criterion because good degree of accuracy and consistency of experimental data can be expected compared with the unsymmetrically loaded single lap joints. The debond/separation loads of steel beams with different CFRP lengths were measured and compared with those predicted from the criterion. Good agreement between the test results and the prediction was found.
引用
收藏
页码:565 / 574
页数:10
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