FE modeling of FRP-strengthened RC beams subjected to standard fire exposure

J. G. Dai; W. Y. Gao

doi:10.1201/b17618-194

FE modeling of FRP-strengthened RC beams subjected to standard fire exposure

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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Abstract

This paper presents finite element (FE) modeling of unprotected/insulated FRP-strengthened RC beams subjected to standard fire exposure. In the FE model, the temperature-dependent properties of concrete, steel and FRP as well as the FRP-to-concrete and the steel-to-concrete interfaces are properly considered. Comparisons between the FE predictions and the existing test data are presented to demonstrate the accuracy of the proposed FE model. Further parametric analyses revealed that, unless a very thick insulation layer is used (i.e., usually an impractical solution), the critical role of the insulation layer in FRP-strengthened RC beams is to protect the original RC beams by delaying the temperature increase of the internal steel reinforcement rather than to protect the FRP strengthening system. Therefore, the fire performance design of an insulated FRP-strengthened RC beam can be conservatively and closely approximated by that of an insulated un-strengthened RC beam. © 2015 Taylor & Francis Group, London.

Original language	English
Title of host publication	Life-Cycle of Structural Systems
Subtitle of host publication	Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering
Editors	Hitoshi Furuta, Dan M. Frangopol, Mitsuyoshi Akiyama
Place of Publication	London
Publisher	CRC Press
Pages	1313-1322
ISBN (Electronic)	9780429227196, 978-1-315-76180-0
ISBN (Print)	9781138001206
DOIs	https://doi.org/10.1201/b17618-194
Publication status	Published - 2015
Externally published	Yes
Event	4th International Symposium on Life-Cycle Civil Engineering (IALCCE 2014) - Waseda University, Tokyo, Japan Duration: 16 Nov 2014 → 19 Nov 2014

Conference

Conference	4th International Symposium on Life-Cycle Civil Engineering (IALCCE 2014)
Place	Japan
City	Tokyo
Period	16/11/14 → 19/11/14

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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Dai, J. G., & Gao, W. Y. (2015). FE modeling of FRP-strengthened RC beams subjected to standard fire exposure. In H. Furuta, D. M. Frangopol, & M. Akiyama (Eds.), Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering (pp. 1313-1322). CRC Press. https://doi.org/10.1201/b17618-194

Dai, J. G. ; Gao, W. Y. / FE modeling of FRP-strengthened RC beams subjected to standard fire exposure. Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering. editor / Hitoshi Furuta ; Dan M. Frangopol ; Mitsuyoshi Akiyama. London : CRC Press, 2015. pp. 1313-1322

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title = "FE modeling of FRP-strengthened RC beams subjected to standard fire exposure",

abstract = "This paper presents finite element (FE) modeling of unprotected/insulated FRP-strengthened RC beams subjected to standard fire exposure. In the FE model, the temperature-dependent properties of concrete, steel and FRP as well as the FRP-to-concrete and the steel-to-concrete interfaces are properly considered. Comparisons between the FE predictions and the existing test data are presented to demonstrate the accuracy of the proposed FE model. Further parametric analyses revealed that, unless a very thick insulation layer is used (i.e., usually an impractical solution), the critical role of the insulation layer in FRP-strengthened RC beams is to protect the original RC beams by delaying the temperature increase of the internal steel reinforcement rather than to protect the FRP strengthening system. Therefore, the fire performance design of an insulated FRP-strengthened RC beam can be conservatively and closely approximated by that of an insulated un-strengthened RC beam. {\textcopyright} 2015 Taylor & Francis Group, London.",

author = "Dai, {J. G.} and Gao, {W. Y.}",

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Dai, JG & Gao, WY 2015, FE modeling of FRP-strengthened RC beams subjected to standard fire exposure. in H Furuta, DM Frangopol & M Akiyama (eds), Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering. CRC Press, London, pp. 1313-1322, 4th International Symposium on Life-Cycle Civil Engineering (IALCCE 2014), Tokyo, Japan, 16/11/14. https://doi.org/10.1201/b17618-194

FE modeling of FRP-strengthened RC beams subjected to standard fire exposure. / Dai, J. G.; Gao, W. Y.
Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering. ed. / Hitoshi Furuta; Dan M. Frangopol; Mitsuyoshi Akiyama. London: CRC Press, 2015. p. 1313-1322.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - FE modeling of FRP-strengthened RC beams subjected to standard fire exposure

AU - Dai, J. G.

AU - Gao, W. Y.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015

Y1 - 2015

N2 - This paper presents finite element (FE) modeling of unprotected/insulated FRP-strengthened RC beams subjected to standard fire exposure. In the FE model, the temperature-dependent properties of concrete, steel and FRP as well as the FRP-to-concrete and the steel-to-concrete interfaces are properly considered. Comparisons between the FE predictions and the existing test data are presented to demonstrate the accuracy of the proposed FE model. Further parametric analyses revealed that, unless a very thick insulation layer is used (i.e., usually an impractical solution), the critical role of the insulation layer in FRP-strengthened RC beams is to protect the original RC beams by delaying the temperature increase of the internal steel reinforcement rather than to protect the FRP strengthening system. Therefore, the fire performance design of an insulated FRP-strengthened RC beam can be conservatively and closely approximated by that of an insulated un-strengthened RC beam. © 2015 Taylor & Francis Group, London.

AB - This paper presents finite element (FE) modeling of unprotected/insulated FRP-strengthened RC beams subjected to standard fire exposure. In the FE model, the temperature-dependent properties of concrete, steel and FRP as well as the FRP-to-concrete and the steel-to-concrete interfaces are properly considered. Comparisons between the FE predictions and the existing test data are presented to demonstrate the accuracy of the proposed FE model. Further parametric analyses revealed that, unless a very thick insulation layer is used (i.e., usually an impractical solution), the critical role of the insulation layer in FRP-strengthened RC beams is to protect the original RC beams by delaying the temperature increase of the internal steel reinforcement rather than to protect the FRP strengthening system. Therefore, the fire performance design of an insulated FRP-strengthened RC beam can be conservatively and closely approximated by that of an insulated un-strengthened RC beam. © 2015 Taylor & Francis Group, London.

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DO - 10.1201/b17618-194

M3 - RGC 32 - Refereed conference paper (with host publication)

AN - SCOPUS:84941241682

SN - 9781138001206

SP - 1313

EP - 1322

BT - Life-Cycle of Structural Systems

A2 - Furuta, Hitoshi

A2 - Frangopol, Dan M.

A2 - Akiyama, Mitsuyoshi

PB - CRC Press

CY - London

T2 - 4th International Symposium on Life-Cycle Civil Engineering (IALCCE 2014)

Y2 - 16 November 2014 through 19 November 2014

ER -

Dai JG, Gao WY. FE modeling of FRP-strengthened RC beams subjected to standard fire exposure. In Furuta H, Frangopol DM, Akiyama M, editors, Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering. London: CRC Press. 2015. p. 1313-1322 Epub 2014 Oct 30. doi: 10.1201/b17618-194

FE modeling of FRP-strengthened RC beams subjected to standard fire exposure

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