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

Jianguo Dai, W. Y. Gao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

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.
Original languageEnglish
Title of host publicationLife-Cycle of Structural Systems
Subtitle of host publicationDesign, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
PublisherCRC Press/Balkema
Pages1313-1322
Number of pages10
ISBN (Print)9781138001206
Publication statusPublished - 1 Jan 2015
Event4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014 - Tokyo, Japan
Duration: 16 Nov 201419 Nov 2014

Conference

Conference4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
CountryJapan
CityTokyo
Period16/11/1419/11/14

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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