FRP-Reinforced Masonry Structures: Numerical Modeling by Means of a New Discrete Element Approach

Caddemi, S.; Caliò, Ivo; Cannizzaro, Francesco; Lourenço, Paulo B.; Pantò, Bartolomeo

doi:10.7712/120117.5594.18433

Cited by 8 publications

(8 citation statements)

References 9 publications

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“…The extension of the macro-element approach to account for the presence of FRP-reinforcements was proposed in [22], and is here briefly recalled. The presence of the fibre-reinforced elements is modelled by means of zero thickness rigid flat elements, partially or totally lying on one of the surfaces of the masonry element, as shown in Figure 2.…”

Section: The Modeling Of Frp Reinforcingmentioning

confidence: 99%

“…With this aim, a new non-linear model recently proposed in the literature [22], able to simulate the presence of FRP strips or 2D-webs and to grasp the interaction with the masonry support, also in presence of a curved substrate, is here employed. The model is able to simulate the debonding of the reinforcement from the masonry support due to tangential delamination or to normal tensile detachment, which represent the most probable collapse mechanisms of FRP reinforced structures.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Modelling of Curved Masonry Structures after Seismic Retrofit through FRP Reinforcing

et al. 2017

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Abstract:A reliable numerical evaluation of the nonlinear behaviour of historical masonry structures, before and after a seismic retrofitting, is a fundamental issue in the design of the structural retrofitting. Many strengthening techniques have been introduced aimed at improving the structural performance of existing structures that, if properly designed and applied, provide an effective contribution to the preservation of their cultural value. Among these strategies, the use of fabric-reinforced polymeric (FRP) materials on masonry surface is being widely adopted for practical engineering purposes. The application of strips or 2D grid composite layers is a low invasive and easy to apply retrofitting strategy, that is able to improve both the in-plane and the out of plane behaviour of masonry elements also in the presence of complex geometries thanks to their flexibility. For this reason, these techniques are frequently employed for reinforcing masonry curved elements, such as arches and vaults. In this paper, taking advantage of an existing general framework based on a discrete element approach previously introduced by the authors, a discrete element conceived for modelling the interaction between masonry and FRP reinforcement is applied to different curved masonry vaults typologies. This model, already used for evaluating the nonlinear behaviour of masonry arches, is here employed for the first time to evaluate the effectiveness of FRP reinforcements on double curvature elements. After a theoretical description of the proposed strategy, two applications relative to an arch and a dome, subjected to seismic loads, with different reinforced conditions, are presented. The benefit provided by the application of FRP strips is also compared with that associated to traditional retrofitting techniques. A sensitivity study is performed with respect to the structure scale factor.

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Section: The Modeling Of Frp Reinforcingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear Modelling of Curved Masonry Structures after Seismic Retrofit through FRP Reinforcing

et al. 2017

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“…Originally restricted to a 2D-kinematic for simulating the in-plane response of masonry [1,2], the model was extended to simulate the out-ofplane response of masonry panels, while also simulating the response of monumental structures [6,7]. In the present paper, a recent formulation that allows to model the interaction between masonry and the FRCM reinforcement [8] is applied.…”

Section: The Discrete Macro Modelling Approachmentioning

confidence: 99%

“…Following [8], the presence of composite reinforcing, applied by unidirectional strips, 2D webs or grids, is simulated by introducing plate elements bonded to masonry with non-linear transversal and longitudinal links. A further set of springs represents the membrane behavior of the reinforcement (Figure 2).…”

Section: The Macro-model For Simulating the Reinforcingmentioning

confidence: 99%

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Numerical Assessment of the Out-of-Plane Response of Masonry Panels Reinforced by Means of FRCM Systems

Pantò¹,

Malena²,

Felice³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Keywords: Out-of-plane behaviour of masonry walls, Composite materials, FRCM reinforcing systems, bond-slip, Non-linear modeling, Macro-model approach. Abstract. The use of Fibre Reinforced Cementitious Matrix (FRCM) materials, is becoming a very common technique of retrofitting for historical and monumental masonry buildings. This technique, if compared to the use of fiber polymeric materials (FRP), is

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Bond Behavior of TRM Systems and Reinforcement of Masonry Arches: Testing and Modelling

Misseri

Stipo

Galassi

et al. 2020

Lecture Notes in Mechanical Engineering

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The paper addresses the results of experimental and analytical investigations on composite systems able to reduce structural vulnerability of arches. Two composites, consisting of a PBO (propylbenzodioxole) fibre textile or a carbon fibre textile coupled with a cement-based matrix, are considered. Experimental results on bond capacity between composites and bricks and on the structural behaviour of unreinforced and extrados-reinforced 1:2 scale masonry arches, tested under vertical load, are presented. The global load slip law deduced from double-shear tests is employed to predict the load displacement path followed by an arch reinforced at the extrados through the two composites. The analytical model, which exploits stationarity of potential energy of acting forces, is validated through the experimental results on the reinforced reduced scale arch. Results show how the initial response is tackled by the model. The procedure could be refined and extended to other curved elements (e.g. pointed and ogee arches, vaults and domes) and loading conditions. A further improvement may come from the use of test results on convex surfaces, it being known that the bonding behaviour is improved with respect to that on plane surfaces.

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FRP-Reinforced Masonry Structures: Numerical Modeling by Means of a New Discrete Element Approach

Abstract: Abstract. The protection of existing historical masonry structures represents a relevant topic in view of

Cited by 8 publications

References 9 publications

Nonlinear Modelling of Curved Masonry Structures after Seismic Retrofit through FRP Reinforcing

Nonlinear Modelling of Curved Masonry Structures after Seismic Retrofit through FRP Reinforcing

Numerical Assessment of the Out-of-Plane Response of Masonry Panels Reinforced by Means of FRCM Systems

Bond Behavior of TRM Systems and Reinforcement of Masonry Arches: Testing and Modelling

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