Experimental study on repair of fatigue cracks at welded web gusset joint using CFRP strips

This paper presents repair methods of fatigue cracks using CFRP strips. In particular, the subject of repair is fatigue cracks initiated at welded web gusset joints, which are the typical details in steel bridges. Several repair methods were investigated experimentally focusing on weld details. In a...

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Bibliographic Details
Published inThin-walled structures Vol. 47; no. 10; pp. 1059 - 1068
Main Authors Nakamura, Hitoshi, Jiang, Wei, Suzuki, Hiroyuki, Maeda, Ken-ichi, Irube, Takao
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.2009
Subjects
Carbon fiber reinforced polymer strip
Drill-hole
Fatigue crack
Lamination
Repair
Welded joint
Carbon fiber reinforced polymer strip
Lamination
Welded joint
Repair
Drill-hole
Fatigue crack
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Summary:This paper presents repair methods of fatigue cracks using CFRP strips. In particular, the subject of repair is fatigue cracks initiated at welded web gusset joints, which are the typical details in steel bridges. Several repair methods were investigated experimentally focusing on weld details. In addition, more effective repair methods were also investigated using combination of CFRP strips and drill-holes. As a result, it was found that fatigue life after repair was significantly improved. Therefore, the authors confirmed the feasibility of the proposed technique as a useful repair method to improve fatigue life of steel structures.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0263-8231
1879-3223
DOI:10.1016/j.tws.2008.10.016