Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading

George C. Manos; Konstantinos B. Katakalos; Marios Theofanous

Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading

George C. Manos, Konstantinos B. Katakalos, Marios Theofanous

The University of Birmingham

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The successful validation of a numerical model is presented that can realistically approximate the shear behavior of reinforced concrete (RC) T-section beams strengthened against shear with externally applied open hoop steel fiber reinforcing polymer (SFRP) strips. For this purpose, the measured load-deformation response of three (3) full-scale R/C beam specimens is utilized. These specimens were imposed in a cyclic loading sequence up to failure. Open hoop steel FRP strip shear reinforcement was applied externally to upgrade the shear capacity of two (2) RC beam specimens. For the first specimen the SFRP strips were applied without anchorage, whereas for the other strengthened specimen the SFRP strips were attached together with a novel anchoring device. The successful numerical simulation predicts with a very good degree of approximation the observed load-deformation behavior and the ultimate shear capacity of all these specimens as well as the observed modes of failure including diagonal concrete cracking, debonding of the CFRP strips in the case of no anchoring, or the plastification of parts of the anchoring devices plus the adjacent crushing of the concrete.

Original language	English
Title of host publication	COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Publisher	National Technical University of Athens
Pages	505-518
Number of pages	14
Publication status	Published - 2015
Event	5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015 - Hersonissos, Crete, Greece Duration: 25 May 2015 → 27 May 2015

Conference

Conference	5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015
Country/Territory	Greece
City	Hersonissos, Crete
Period	25/05/15 → 27/05/15

Keywords

Experimental investigation
FRPs
Numerical simulation FRP strip anchoring instructions
Reinforced concrete T-beams
Shear strengthening

ASJC Scopus subject areas

Computers in Earth Sciences
Computational Mathematics
Geotechnical Engineering and Engineering Geology

Cite this

Manos, G. C., Katakalos, K. B., & Theofanous, M. (2015). Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading. In COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (pp. 505-518). National Technical University of Athens.

Manos, George C. ; Katakalos, Konstantinos B. ; Theofanous, Marios. / Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading. COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. National Technical University of Athens, 2015. pp. 505-518

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title = "Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading",

abstract = "The successful validation of a numerical model is presented that can realistically approximate the shear behavior of reinforced concrete (RC) T-section beams strengthened against shear with externally applied open hoop steel fiber reinforcing polymer (SFRP) strips. For this purpose, the measured load-deformation response of three (3) full-scale R/C beam specimens is utilized. These specimens were imposed in a cyclic loading sequence up to failure. Open hoop steel FRP strip shear reinforcement was applied externally to upgrade the shear capacity of two (2) RC beam specimens. For the first specimen the SFRP strips were applied without anchorage, whereas for the other strengthened specimen the SFRP strips were attached together with a novel anchoring device. The successful numerical simulation predicts with a very good degree of approximation the observed load-deformation behavior and the ultimate shear capacity of all these specimens as well as the observed modes of failure including diagonal concrete cracking, debonding of the CFRP strips in the case of no anchoring, or the plastification of parts of the anchoring devices plus the adjacent crushing of the concrete.",

keywords = "Experimental investigation, FRPs, Numerical simulation FRP strip anchoring instructions, Reinforced concrete T-beams, Shear strengthening",

author = "Manos, {George C.} and Katakalos, {Konstantinos B.} and Marios Theofanous",

year = "2015",

language = "English",

pages = "505--518",

booktitle = "COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering",

publisher = "National Technical University of Athens",

note = "5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015 ; Conference date: 25-05-2015 Through 27-05-2015",

}

Manos, GC, Katakalos, KB & Theofanous, M 2015, Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading. in COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. National Technical University of Athens, pp. 505-518, 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015, Hersonissos, Crete, Greece, 25/05/15.

Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading. / Manos, George C.; Katakalos, Konstantinos B.; Theofanous, Marios.
COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. National Technical University of Athens, 2015. p. 505-518.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading

AU - Manos, George C.

AU - Katakalos, Konstantinos B.

AU - Theofanous, Marios

PY - 2015

Y1 - 2015

N2 - The successful validation of a numerical model is presented that can realistically approximate the shear behavior of reinforced concrete (RC) T-section beams strengthened against shear with externally applied open hoop steel fiber reinforcing polymer (SFRP) strips. For this purpose, the measured load-deformation response of three (3) full-scale R/C beam specimens is utilized. These specimens were imposed in a cyclic loading sequence up to failure. Open hoop steel FRP strip shear reinforcement was applied externally to upgrade the shear capacity of two (2) RC beam specimens. For the first specimen the SFRP strips were applied without anchorage, whereas for the other strengthened specimen the SFRP strips were attached together with a novel anchoring device. The successful numerical simulation predicts with a very good degree of approximation the observed load-deformation behavior and the ultimate shear capacity of all these specimens as well as the observed modes of failure including diagonal concrete cracking, debonding of the CFRP strips in the case of no anchoring, or the plastification of parts of the anchoring devices plus the adjacent crushing of the concrete.

AB - The successful validation of a numerical model is presented that can realistically approximate the shear behavior of reinforced concrete (RC) T-section beams strengthened against shear with externally applied open hoop steel fiber reinforcing polymer (SFRP) strips. For this purpose, the measured load-deformation response of three (3) full-scale R/C beam specimens is utilized. These specimens were imposed in a cyclic loading sequence up to failure. Open hoop steel FRP strip shear reinforcement was applied externally to upgrade the shear capacity of two (2) RC beam specimens. For the first specimen the SFRP strips were applied without anchorage, whereas for the other strengthened specimen the SFRP strips were attached together with a novel anchoring device. The successful numerical simulation predicts with a very good degree of approximation the observed load-deformation behavior and the ultimate shear capacity of all these specimens as well as the observed modes of failure including diagonal concrete cracking, debonding of the CFRP strips in the case of no anchoring, or the plastification of parts of the anchoring devices plus the adjacent crushing of the concrete.

KW - Experimental investigation

KW - FRPs

KW - Numerical simulation FRP strip anchoring instructions

KW - Reinforced concrete T-beams

KW - Shear strengthening

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M3 - Conference contribution

AN - SCOPUS:84942255069

SP - 505

EP - 518

BT - COMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering

PB - National Technical University of Athens

T2 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015

Y2 - 25 May 2015 through 27 May 2015

ER -

Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading

Abstract

Conference

Keywords

ASJC Scopus subject areas

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