Modelling the bond in GFRP bar reinforced concrete thin structural members

Ana Veljkovic; Valter Carvelli; Mohammadali Rezazadeh

doi:10.1016/j.istruc.2019.12.027

Modelling the bond in GFRP bar reinforced concrete thin structural members

Ana Veljkovic, Valter Carvelli^*, Mohammadali Rezazadeh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

This paper analyses the accuracy of FE (Finite Element) modelling of concrete thin slabs, reinforced with GFRP (Glass Fiber Reinforced Polymer) bars, under bending loading conditions. It considers two strategies of concrete/bar interaction approach – direct and indirect. Indirect bond approach was combined with concrete tension stiffening model, whereas the direct bond one employed plain concrete constitutive model. Apart from selection of material and bond models, FE mesh sensitivity was examined. The efficiency of both bond modelling strategies was proven for the slab of standard thickness (100 mm) failed due to concrete crushing, whereas direct bond method was shown indispensable when simulating very thin slabs (40 mm) failed due to bar debonding.

Original language	English
Pages (from-to)	13-26
Number of pages	14
Journal	Structures
Volume	24
Early online date	20 Jan 2020
DOIs	https://doi.org/10.1016/j.istruc.2019.12.027
Publication status	Published - 1 Apr 2020
Externally published	Yes

Keywords

Bond
Concrete mechanical models
Debonding
FEM modelling
GFRP bar
RC slab

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10.1016/j.istruc.2019.12.027

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title = "Modelling the bond in GFRP bar reinforced concrete thin structural members",

abstract = "This paper analyses the accuracy of FE (Finite Element) modelling of concrete thin slabs, reinforced with GFRP (Glass Fiber Reinforced Polymer) bars, under bending loading conditions. It considers two strategies of concrete/bar interaction approach – direct and indirect. Indirect bond approach was combined with concrete tension stiffening model, whereas the direct bond one employed plain concrete constitutive model. Apart from selection of material and bond models, FE mesh sensitivity was examined. The efficiency of both bond modelling strategies was proven for the slab of standard thickness (100 mm) failed due to concrete crushing, whereas direct bond method was shown indispensable when simulating very thin slabs (40 mm) failed due to bar debonding.",

keywords = "Bond, Concrete mechanical models, Debonding, FEM modelling, GFRP bar, RC slab",

author = "Ana Veljkovic and Valter Carvelli and Mohammadali Rezazadeh",

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doi = "10.1016/j.istruc.2019.12.027",

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T1 - Modelling the bond in GFRP bar reinforced concrete thin structural members

AU - Veljkovic, Ana

AU - Carvelli, Valter

AU - Rezazadeh, Mohammadali

PY - 2020/4/1

Y1 - 2020/4/1

N2 - This paper analyses the accuracy of FE (Finite Element) modelling of concrete thin slabs, reinforced with GFRP (Glass Fiber Reinforced Polymer) bars, under bending loading conditions. It considers two strategies of concrete/bar interaction approach – direct and indirect. Indirect bond approach was combined with concrete tension stiffening model, whereas the direct bond one employed plain concrete constitutive model. Apart from selection of material and bond models, FE mesh sensitivity was examined. The efficiency of both bond modelling strategies was proven for the slab of standard thickness (100 mm) failed due to concrete crushing, whereas direct bond method was shown indispensable when simulating very thin slabs (40 mm) failed due to bar debonding.

AB - This paper analyses the accuracy of FE (Finite Element) modelling of concrete thin slabs, reinforced with GFRP (Glass Fiber Reinforced Polymer) bars, under bending loading conditions. It considers two strategies of concrete/bar interaction approach – direct and indirect. Indirect bond approach was combined with concrete tension stiffening model, whereas the direct bond one employed plain concrete constitutive model. Apart from selection of material and bond models, FE mesh sensitivity was examined. The efficiency of both bond modelling strategies was proven for the slab of standard thickness (100 mm) failed due to concrete crushing, whereas direct bond method was shown indispensable when simulating very thin slabs (40 mm) failed due to bar debonding.

KW - Bond

KW - Concrete mechanical models

KW - Debonding

KW - FEM modelling

KW - GFRP bar

KW - RC slab

U2 - 10.1016/j.istruc.2019.12.027

DO - 10.1016/j.istruc.2019.12.027

M3 - Article

AN - SCOPUS:85077656120

SN - 2352-0124

VL - 24

SP - 13

EP - 26

JO - Structures

JF - Structures

ER -

Modelling the bond in GFRP bar reinforced concrete thin structural members

Abstract

Keywords

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