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Author:

Wang, Guo-Lin (Wang, Guo-Lin.) | Dai, Jian-Guo (Dai, Jian-Guo.) | Bai, Yu-Lei (Bai, Yu-Lei.) (Scholars:白玉磊)

Indexed by:

EI Scopus SCIE

Abstract:

This paper presents an experimental study on the strengthening of seismically deficient RC beam-column joints using carbon fiber reinforced polymer (CFRP). Six exterior RC beam-column joint specimens were tested to identify an effective method for improving the seismic performance of such joints in terms of their lateral strength and ductility. These six specimens included one non-seismically designed specimen, one seismically designed specimen, and four specimens retrofitted using different schemes. In these schemes, both externally bonded CFRP sheets and near-surface mounted (NSM) CFRP strips were explored as strengthening options. The test results showed that by adding CFRP reinforcement, the seismic performance of a seismically deficient beam-column joint can be significantly improved. In particular, the use of NSM CFRP strips in beams and joints was found to effectively relocate the plastic hinge away from the joint region, thereby leading to a ductile failure mode (beam flexural failure), which demonstrates the effectiveness of this seismic retrofit method. A good understanding of the hinge relocation mechanisms has been achieved through extensive and detailed strain measurement during the tests.

Keyword:

Beam-column joints Reinforced concrete NSM CFRP Seismic retrofit CFRP

Author Community:

  • [ 1 ] [Wang, Guo-Lin]Shanghai Inst Technol, Sch Urban Construct & Safety Engn, Shanghai, Peoples R China
  • [ 2 ] [Dai, Jian-Guo]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China
  • [ 3 ] [Bai, Yu-Lei]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing, Peoples R China

Reprint Author's Address:

  • [Dai, Jian-Guo]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China

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Source :

COMPOSITE STRUCTURES

ISSN: 0263-8223

Year: 2019

Volume: 224

6 . 3 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:211

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 41

SCOPUS Cited Count: 48

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 16

Online/Total:660/10680958
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