Selective upgrade of underdesigned reinforced beam-column joints using carbon fiber-reinforced concrete

Andrea Prota, Antonio Nanni, Gaetano Manfredi, Edoardo Cosenza

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

Seismic regions are characterized by reinforced concrete (RC) structures that have been designed without seismic provisions. As the structural upgrade of such structures becomes necessary, one of the approaches that recent design guidelines suggest is that of the hierarchy of strength. By increasing the strength and ductility of critical components, their brittle and catastrophic failure is prevented and the occurrence of more desirable mechanisms is promoted. This approach allows improving the global behavior of the structure. The key issue of strengthening design of RC frames is represented by the beam-column connection. This paper presents a technique based on fiber-reinforced polymer (FRP) composites for the seismic upgrade of RC beam-column connections that was validated with tests on 11 initially underdesigned specimens. The results of the experimental investigation are presented, and a discussion on how different parameters influenced the behavior of the samples in terms of strength or ductility, or both, is offered.

Original languageEnglish
Pages (from-to)699-707
Number of pages9
JournalACI Structural Journal
Volume101
Issue number5
StatePublished - Sep 1 2004
Externally publishedYes

Fingerprint

Carbon fibers
Reinforced concrete
Ductility
Concrete construction
Polymers
Fibers
Composite materials
carbon fiber

Keywords

  • Beams
  • Columns
  • Ductility
  • Fibers
  • Polymers
  • Reinforcement

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Materials Science(all)

Cite this

Selective upgrade of underdesigned reinforced beam-column joints using carbon fiber-reinforced concrete. / Prota, Andrea; Nanni, Antonio; Manfredi, Gaetano; Cosenza, Edoardo.

In: ACI Structural Journal, Vol. 101, No. 5, 01.09.2004, p. 699-707.

Research output: Contribution to journalArticle

Prota, Andrea ; Nanni, Antonio ; Manfredi, Gaetano ; Cosenza, Edoardo. / Selective upgrade of underdesigned reinforced beam-column joints using carbon fiber-reinforced concrete. In: ACI Structural Journal. 2004 ; Vol. 101, No. 5. pp. 699-707.
@article{5484586d67134fe79b6a7014257b3154,
title = "Selective upgrade of underdesigned reinforced beam-column joints using carbon fiber-reinforced concrete",
abstract = "Seismic regions are characterized by reinforced concrete (RC) structures that have been designed without seismic provisions. As the structural upgrade of such structures becomes necessary, one of the approaches that recent design guidelines suggest is that of the hierarchy of strength. By increasing the strength and ductility of critical components, their brittle and catastrophic failure is prevented and the occurrence of more desirable mechanisms is promoted. This approach allows improving the global behavior of the structure. The key issue of strengthening design of RC frames is represented by the beam-column connection. This paper presents a technique based on fiber-reinforced polymer (FRP) composites for the seismic upgrade of RC beam-column connections that was validated with tests on 11 initially underdesigned specimens. The results of the experimental investigation are presented, and a discussion on how different parameters influenced the behavior of the samples in terms of strength or ductility, or both, is offered.",
keywords = "Beams, Columns, Ductility, Fibers, Polymers, Reinforcement",
author = "Andrea Prota and Antonio Nanni and Gaetano Manfredi and Edoardo Cosenza",
year = "2004",
month = "9",
day = "1",
language = "English",
volume = "101",
pages = "699--707",
journal = "ACI Structural Journal",
issn = "0889-3241",
publisher = "American Concrete Institute",
number = "5",

}

TY - JOUR

T1 - Selective upgrade of underdesigned reinforced beam-column joints using carbon fiber-reinforced concrete

AU - Prota, Andrea

AU - Nanni, Antonio

AU - Manfredi, Gaetano

AU - Cosenza, Edoardo

PY - 2004/9/1

Y1 - 2004/9/1

N2 - Seismic regions are characterized by reinforced concrete (RC) structures that have been designed without seismic provisions. As the structural upgrade of such structures becomes necessary, one of the approaches that recent design guidelines suggest is that of the hierarchy of strength. By increasing the strength and ductility of critical components, their brittle and catastrophic failure is prevented and the occurrence of more desirable mechanisms is promoted. This approach allows improving the global behavior of the structure. The key issue of strengthening design of RC frames is represented by the beam-column connection. This paper presents a technique based on fiber-reinforced polymer (FRP) composites for the seismic upgrade of RC beam-column connections that was validated with tests on 11 initially underdesigned specimens. The results of the experimental investigation are presented, and a discussion on how different parameters influenced the behavior of the samples in terms of strength or ductility, or both, is offered.

AB - Seismic regions are characterized by reinforced concrete (RC) structures that have been designed without seismic provisions. As the structural upgrade of such structures becomes necessary, one of the approaches that recent design guidelines suggest is that of the hierarchy of strength. By increasing the strength and ductility of critical components, their brittle and catastrophic failure is prevented and the occurrence of more desirable mechanisms is promoted. This approach allows improving the global behavior of the structure. The key issue of strengthening design of RC frames is represented by the beam-column connection. This paper presents a technique based on fiber-reinforced polymer (FRP) composites for the seismic upgrade of RC beam-column connections that was validated with tests on 11 initially underdesigned specimens. The results of the experimental investigation are presented, and a discussion on how different parameters influenced the behavior of the samples in terms of strength or ductility, or both, is offered.

KW - Beams

KW - Columns

KW - Ductility

KW - Fibers

KW - Polymers

KW - Reinforcement

UR - http://www.scopus.com/inward/record.url?scp=5644241224&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5644241224&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:5644241224

VL - 101

SP - 699

EP - 707

JO - ACI Structural Journal

JF - ACI Structural Journal

SN - 0889-3241

IS - 5

ER -