Multilaminate Macromodel for Concrete Masonry: Formulation and Verification

El‐Dakhakhni, Wael; Drysdale, Robert G.; Khattab, Magdy M.

doi:10.1061/(asce)0733-9445(2006)132:12(1984)

Cited by 11 publications

(5 citation statements)

References 11 publications

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“…For the macro-modeling approach, Lourenço et al [18] presented a failure criterion for masonry based on an extension of conventional formulations for isotropic quasibrittle materials to describe the orthotropic behaviour. Another macro-model was developed by El-Dakhakhni et al [20] to predict the in-plane behavior of concrete masonry. It is a multilaminate model where the masonry assemblage is replaced by an equivalent material which consists of a homogenous medium intersected by two sets of planes of weakness along the head and bed joints.…”

Section: Introductionmentioning

confidence: 99%

Parametrical study of masonry walls subjected to in-plane loading through numerical modeling

Haach

Vasconcelos

Lourénço

2011

Engineering Structures

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This paper deals with the numerical assessment of the influence of parameters such as pre-compression level, aspect ratio, vertical and horizontal reinforcement ratios and boundary conditions on the lateral strength of masonry walls under in-plane loading. The numerical study is performed through the software DIANA® based on the Finite Element Method. The validation of the numerical model is carried out from a database of available experimental results on masonry walls tested under cyclic lateral loading. Numerical results revealed that boundary conditions play a central role on the lateral behavior of masonry walls under in-plane loading and determine the influence of level of pre-compression as well as the reinforcement ratio on the wall strength. The lateral capacity of walls decreases with the increase of aspect ratio and with the decrease of pre-compression. Vertical steel bars appear to have almost no influence in the shear strength of masonry walls and horizontal reinforcement only increases the lateral strength of masonry walls if the shear response of the walls is determinant for failure, which is directly related to the boundary conditions.

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Section: Introductionmentioning

confidence: 99%

Parametrical study of masonry walls subjected to in-plane loading through numerical modeling

Haach

Vasconcelos

Lourénço

2011

Engineering Structures

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“…El-Dakhakhni et al [132] developed a macro-model for in-plane analysis of concrete masonry walls with and without reinforcements. In this multi-laminate model, a masonry wall is simulated by an equivalent homogeneous media consisting two sets of planes of weakness along the head and bed joints.…”

Section: Modeling Masonry As a One-phase Materials (Macro-modeling Appmentioning

confidence: 99%

“…To determine the global behavior of the model, the influence of these planes of weakness is smeared. This modeling technique allows prediction of the different possible failure modes, whether the planes of failure follow the mortar joints or not (El-Dakhakhni et al, 2006, [132]). The advantage of this model is that it can predict the initiation and progress of different failure modes (i.e., head joint, bed joint or homogeneous media failure) in a separate or a combined manner.…”

Section: Modeling Masonry As a One-phase Materials (Macro-modeling Appmentioning

confidence: 99%

Stochastic Vulnerability Assessment of Masonry Structures: Concepts, Modeling and Restoration Aspects

et al. 2019

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A methodology aiming to predict the vulnerability of masonry structures under seismic action is presented herein. Masonry structures, among which many are cultural heritage assets, present high vulnerability under earthquake. Reliable simulations of their response to seismic stresses are exceedingly difficult because of the complexity of the structural system and the anisotropic and brittle behavior of the masonry materials. Furthermore, the majority of the parameters involved in the problem such as the masonry material mechanical characteristics and earthquake loading characteristics have a stochastic-probabilistic nature. Within this framework, a detailed analytical methodological approach for assessing the seismic vulnerability of masonry historical and monumental structures is presented, taking into account the probabilistic nature of the input parameters by means of analytically determining fragility curves. The emerged methodology is presented in detail through application on theoretical and built cultural heritage real masonry structures. leading to a final approval (or rejection) of the decisions already taken for repair or strengthening of the existing structure. Step 8: Explanatory ReportThe last step, as a result of the proposed methodology, includes the detailed "Explanatory Report", where all the collected information, the diagnosis, including the safety evaluation, and any decision to intervene should be fully detailed. This document is essential for eventual future analyses and interventions' measures in the structure. Computational and Mathematical AspectsIn this section, the most basic analytical constitutive laws and numerical models required for the successful implementation of the proposed methodology are presented in detail. In particular, the finite element model for the macro-modeling of masonry structures, the failure criteria, the damage indices, the performance levels and the mathematical background of fragility curves are presented.

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“…In the last decades, significant research effort has been directed towards the implementation of finite element (FE) models for simulating the complex interaction between infill walls and RC frames [14][15][16][17][18][19][20][21][22][23][24][25]. Different modelling approaches have been investigated, including macro modelling [15,17,20,24,[26][27][28][29][30], micro modelling [24], discreteelement modelling [31] and meso-scale modelling [23,[32][33][34][35][36][37]. Some finite element studies have been carried out to evaluate the behaviour of RC frames with masonry infill walls and soft or sliding joints [7,9,12,38,39], but the case of rubber joints has not been fully investigated yet.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of reinforced concrete frames with masonry infills and rubber joints

Dhir

Tubaldi

Ahmadi

et al. 2021

Engineering Structures

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Multilaminate Macromodel for Concrete Masonry: Formulation and Verification

Cited by 11 publications

References 11 publications

Parametrical study of masonry walls subjected to in-plane loading through numerical modeling

Parametrical study of masonry walls subjected to in-plane loading through numerical modeling

Stochastic Vulnerability Assessment of Masonry Structures: Concepts, Modeling and Restoration Aspects

Numerical modelling of reinforced concrete frames with masonry infills and rubber joints

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