|Table of Contents|

New Hybrid Bonding Technique of Reinforced Concrete Beams Strengthened with CFRP Sheet(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2009年04期
Page:
66-72
Research Field:
Publishing date:
2009-12-20

Info

Title:
New Hybrid Bonding Technique of Reinforced Concrete Beams Strengthened with CFRP Sheet
Author(s):
SU Ying;  WU Zhi-min;  HU Cheng-he;  SHI Chang-wen
School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Keywords:
CFRP sheet;  anchorage;  reinforced concrete beam;  ultimate bearing capacity;  new hybrid bonding technique
PACS:
TU377.4
DOI:
-
Abstract:
According to the problem that the tensile strength of carbon fiber reinforced polymers(CFRP)isn't fully utilized due to the failure mode of reinforced concrete beams strengthened with CFRP sheet usually deboned between the interface of CFRP sheet and concrete, a new hybrid bonding technique which combined the externally bonded FRP(EB-FRP)and the mechanically fastened FRP(MF-FRP)was presented by using a mechanical fastener to anchor the CFRP sheet. The mechanical fastener was composed of one steel plate and two bolts, and the experimental research of seven reinforced concrete beams was carried out, meanwhile, the influence of reinforcement effect on the number of CFRP sheet layer and the space of mechanical fastener were mainly considered. The analytical results show that the new hybrid bonding technique can effectively prevent the occurrence of debonding failure, which promotes the ultimate bearing capacity of beam significantly and the improved degree increases with increase of the number of CFRP sheet layer.

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Memo

Memo:
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Last Update: 2009-12-20