5 Citations (Scopus)
123 Downloads (Pure)

Abstract

Due to the premature debonding of fiber-reinforced polymer (FRP) materials which results in a reduction in 14 ductility, the problem of how to exploit moment redistribution (MR) in FRP-strengthened continuous 15 reinforced concrete (RC) structures is still unresolved. To date, limited research has been conducted into MR 16 in such structures, so that a reliable and rigorous solution for quantifying MR throughout the loading cycle 17 remains elusive. This paper aims to quantify MR and predict the capacity at reasonable accuracy, to encourage 18 the use of FRP for the strengthening of existing continuous RC structures. Experiments conducted on twelve 19 continuous T-beams are reported, and the findings are discussed. Strengthening configuration and anchorage 20 scheme are the main variables. A new analytical strategy is described for quantifying MR, and the analytical 21 results are then validated against the experimental results. Both experimental and analytical results confirm 22 that there is no reason to restrict MR into strengthened zones. More importantly, MR out of FRP-strengthened 23 zones can indeed occur, provided that the FRP is sufficiently anchored, and reliable exploitation of this is now 24 possible.
Original languageEnglish
Article number04016066
Pages (from-to)1-13
Number of pages13
JournalASCE Journal of Composites for Construction
Volume21
Issue number1
Early online date30 Jun 2016
DOIs
Publication statusPublished - 28 Feb 2017

Fingerprint

Reinforced concrete
Polymers
Fibers
Concrete construction
Debonding
Ductility
Experiments

Cite this

Prediction of capacity for moment redistribution in FRP-strengthened continuous RC T-beams. / Tajaddini, Abbas; Ibell, Timothy; Darby, Antony; Evernden, Mark; Silva, Pedro.

In: ASCE Journal of Composites for Construction, Vol. 21, No. 1, 04016066, 28.02.2017, p. 1-13.

Research output: Contribution to journalArticle

@article{794689e5312644df9d62dcadd01c5b5e,
title = "Prediction of capacity for moment redistribution in FRP-strengthened continuous RC T-beams",
abstract = "Due to the premature debonding of fiber-reinforced polymer (FRP) materials which results in a reduction in 14 ductility, the problem of how to exploit moment redistribution (MR) in FRP-strengthened continuous 15 reinforced concrete (RC) structures is still unresolved. To date, limited research has been conducted into MR 16 in such structures, so that a reliable and rigorous solution for quantifying MR throughout the loading cycle 17 remains elusive. This paper aims to quantify MR and predict the capacity at reasonable accuracy, to encourage 18 the use of FRP for the strengthening of existing continuous RC structures. Experiments conducted on twelve 19 continuous T-beams are reported, and the findings are discussed. Strengthening configuration and anchorage 20 scheme are the main variables. A new analytical strategy is described for quantifying MR, and the analytical 21 results are then validated against the experimental results. Both experimental and analytical results confirm 22 that there is no reason to restrict MR into strengthened zones. More importantly, MR out of FRP-strengthened 23 zones can indeed occur, provided that the FRP is sufficiently anchored, and reliable exploitation of this is now 24 possible.",
author = "Abbas Tajaddini and Timothy Ibell and Antony Darby and Mark Evernden and Pedro Silva",
year = "2017",
month = "2",
day = "28",
doi = "10.1061/(ASCE)CC.1943-5614.0000719",
language = "English",
volume = "21",
pages = "1--13",
journal = "Journal of Composites for Construction",
issn = "1090-0268",
publisher = "American Society of Civil Engineers (ASCE)",
number = "1",

}

TY - JOUR

T1 - Prediction of capacity for moment redistribution in FRP-strengthened continuous RC T-beams

AU - Tajaddini, Abbas

AU - Ibell, Timothy

AU - Darby, Antony

AU - Evernden, Mark

AU - Silva, Pedro

PY - 2017/2/28

Y1 - 2017/2/28

N2 - Due to the premature debonding of fiber-reinforced polymer (FRP) materials which results in a reduction in 14 ductility, the problem of how to exploit moment redistribution (MR) in FRP-strengthened continuous 15 reinforced concrete (RC) structures is still unresolved. To date, limited research has been conducted into MR 16 in such structures, so that a reliable and rigorous solution for quantifying MR throughout the loading cycle 17 remains elusive. This paper aims to quantify MR and predict the capacity at reasonable accuracy, to encourage 18 the use of FRP for the strengthening of existing continuous RC structures. Experiments conducted on twelve 19 continuous T-beams are reported, and the findings are discussed. Strengthening configuration and anchorage 20 scheme are the main variables. A new analytical strategy is described for quantifying MR, and the analytical 21 results are then validated against the experimental results. Both experimental and analytical results confirm 22 that there is no reason to restrict MR into strengthened zones. More importantly, MR out of FRP-strengthened 23 zones can indeed occur, provided that the FRP is sufficiently anchored, and reliable exploitation of this is now 24 possible.

AB - Due to the premature debonding of fiber-reinforced polymer (FRP) materials which results in a reduction in 14 ductility, the problem of how to exploit moment redistribution (MR) in FRP-strengthened continuous 15 reinforced concrete (RC) structures is still unresolved. To date, limited research has been conducted into MR 16 in such structures, so that a reliable and rigorous solution for quantifying MR throughout the loading cycle 17 remains elusive. This paper aims to quantify MR and predict the capacity at reasonable accuracy, to encourage 18 the use of FRP for the strengthening of existing continuous RC structures. Experiments conducted on twelve 19 continuous T-beams are reported, and the findings are discussed. Strengthening configuration and anchorage 20 scheme are the main variables. A new analytical strategy is described for quantifying MR, and the analytical 21 results are then validated against the experimental results. Both experimental and analytical results confirm 22 that there is no reason to restrict MR into strengthened zones. More importantly, MR out of FRP-strengthened 23 zones can indeed occur, provided that the FRP is sufficiently anchored, and reliable exploitation of this is now 24 possible.

UR - http://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000719

U2 - 10.1061/(ASCE)CC.1943-5614.0000719

DO - 10.1061/(ASCE)CC.1943-5614.0000719

M3 - Article

VL - 21

SP - 1

EP - 13

JO - Journal of Composites for Construction

JF - Journal of Composites for Construction

SN - 1090-0268

IS - 1

M1 - 04016066

ER -