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Experiment Research on New Method of Flexural Strengthened with CFRP(PDF)

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

Issue:
2011年01期
Page:
76-82
Research Field:
Publishing date:
2011-03-20

Info

Title:
Experiment Research on New Method of Flexural Strengthened with CFRP
Author(s):
SHI Chang-wen;  HE Hua-nan;  DONG Hai;  WU Zhi-min
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Keywords:
carbon fiber reinforced polymer;  end anchorage;  concrete;  ductile failure
PACS:
TU374
DOI:
-
Abstract:
The concrete members strengthened by external bonded carbon fiber reinforced polymer(CFRP)technique tended to fail by CFRP sheet debonding. In order to solve the problem, authors proposed a new end anchorage method, which made the end of CFRP wrapped in a steel plate, and fixed the steel plate on the reinforced concrete(RC)beam near the support pillar with bolts. Three-point bending tests were carried out on RC beams strengthened by the new end anchorage technique. The results show that this approach can delay the debonding of CFRP, which means even if CFRP debonds in the mid-span, the CFRP and RC beam can still be together by force, and improve the CFRP effect accodingly. Furthermore, the strengthened beams have good ductile failure characteristics.

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Last Update: 2011-03-20