Numerical Investigation on the Influence of FRP Retrofit Layout and Geometry on the In-Plane Behavior of Masonry Walls

Lignola, Gian Piero; Prota, Andrea; Manfredi, Gaetano

doi:10.1061/(asce)cc.1943-5614.0000297

Cited by 39 publications

(17 citation statements)

References 27 publications

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“…Since the latter approach requires a large number of parameters to be properly identified (often a difficult task), usually the first approach is more diffused. When dealing with numerical analysis of structural systems, even this approach may be too complex or too costly from the numerical point of view, thus suggesting the introduction of perfect bonding together with the reduction of FRP stress to the value leading to debonding [25,26]. Even in this case, the robust knowledge of the bond problem is fundamental.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of GFRP-masonry interface behavior: Bond evolution and role of the mortar layers

Mazzotti¹,

Murgo²

2015

Composites Part B: Engineering

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of GFRP-masonry interface behavior: Bond evolution and role of the mortar layers

Mazzotti¹,

Murgo²

2015

Composites Part B: Engineering

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“…Furthermore, the combined Rankine/von Mises yield criterion was adopted. Interface elements have been neglected, according to previous studies [6,[10][11][12], mainly due to the lack of experimental properties. The reinforcement has been modeled as bar reinforcements embedded in all plane stress elements at the horizontal mortar joint locations.…”

Section: Finite Element Methodsmentioning

confidence: 99%

Nonlinear Analyses of Adobe Masonry Walls Reinforced with Fiberglass Mesh

et al. 2014

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Adobe constructions were widespread in the ancient world, and earth was one of the most used construction materials in ancient times. Therefore, the preservation of adobe structures, especially against seismic events, is nowadays an important structural issue. Previous experimental tests have shown that the ratio between mortar and brick mechanical properties (i.e., strength, stiffness and elastic modulus) influences the global response of the walls in terms of strength and ductility. Accurate analyses are presented in both the case of unreinforced and reinforced with fiberglass mesh when varying the mechanical properties of the materials composing the adobe masonry structure. The main issues and variability in the behavior of seismic resisting walls when varying the mechanical properties are herein highlighted. The aim of the overall research activity is to improve the knowledge about the structural behavior of adobe structural members unreinforced and reinforced with fiberglass mesh inside horizontal mortar joints.

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“…5). (Lourenço 1996;Lignola et al 2009Lignola et al , 2012Giamundo et al 2014aGiamundo et al , 2015, the geometry of the barrel vault was reproduced by modelling the mortar and bricks individually, with interfacial elements between them. A regular discretization (Zienkiewicz et al 2005) based on CQ16M eightnode quadrilateral isoparametric plane stress elements was used for both the mortar and the bricks.…”

Section: Input and Tests Programmementioning

confidence: 99%

“…In particular, the inorganic matrix grid (IMG) is a retrofit method realised by embedding a fibre-reinforced grid into an inorganic matrix (usually mortar-based). The application of IMG prevents the hinge mechanism caused by the lack of the tensile strength of the masonry material (Parisi et al 2011;Lignola et al 2012;Giamundo et al 2015). The IMG can be applied on both the extrados and the intrados of the vault.…”

Section: Introductionmentioning

confidence: 99%

Shaking table tests on a full-scale unreinforced and IMG-retrofitted clay brick masonry barrel vault

Giamundo

Lignola

Maddaloni

et al. 2016

Bull Earthquake Eng

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The recent earthquakes in Italy demonstrated the extreme vulnerability of historical and cultural structures. Masonry vaults, which represent artistically valuable elements of these constructions, have been recognised among the most vulnerable elements. Traditional vault retrofit methods, such as buttresses or ties, are still widely adopted. These retrofit methods prevent differential displacements between vault supports (e.g., abutments, masonry piers and loadbearing walls). However, the pier differential displacement is not the only vulnerability source for vaults, and in many cases, further retrofit interventions are needed. Innovative retrofit methods based on inorganic matrixes, such as IMG, are aimed to prevent hinge mechanism failures. Such methods are suitable to be applied on vaults already retrofitted using traditional methods. \ud The knowledge of the seismic behaviour of a vault, once the differential displacement between the supports is prevented, can be crucial to the assessment of potential further vulnerabilities of vaults already retrofitted with traditional methods. \ud However, a deep knowledge of vault seismic behaviour is still lacking from an experimental point of view. Indeed, to date, few dynamic experimental studies have been conducted. Therefore, to investigate the seismic behaviour of masonry barrel vaults, several shaking table tests were performed on a full-scale specimen before and after the retrofit interventions. The tests investigated the main seismic properties of the tested structure and clarified the cracking mechanisms and capacity improvement due to the retrofit interventions. A comprehensive overview of the main results of the experimental tests has been presented

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Numerical Investigation on the Influence of FRP Retrofit Layout and Geometry on the In-Plane Behavior of Masonry Walls

Cited by 39 publications

References 27 publications

Numerical and experimental study of GFRP-masonry interface behavior: Bond evolution and role of the mortar layers

Numerical and experimental study of GFRP-masonry interface behavior: Bond evolution and role of the mortar layers

Nonlinear Analyses of Adobe Masonry Walls Reinforced with Fiberglass Mesh

Shaking table tests on a full-scale unreinforced and IMG-retrofitted clay brick masonry barrel vault

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