Hypothesis for Shear Failure in Masonry Joints.

Riddington, John; Ghazali, Mohd Imran

doi:10.1680/iicep.1990.5253

Cited by 23 publications

(14 citation statements)

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“…In micro-modelling approaches, accuracy relies on understanding the behaviour of the brickto-mortar interface prior to, and after cracking, and being able to replicate it [10,14,15]. This interface presents a high level of variability due to the different compositions of the bricks and mortars used and its strength and behaviour is affected by the quality of the workmanship on site, water content of the masonry units and mortar, masonry units' shape and presence of voids as well as degradation due to weather conditions [9,16].…”

Section: General Overviewmentioning

confidence: 99%

Uncertainty in the numerical modelling of masonry triplet tests under dynamic loading

Puchades¹,

Judge²,

Beattie³

2016

Int. J. SAFE

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Masonry structures have been broadly used worldwide for centuries. These structures are likely to be subjected to seismic movements, malicious or accidental blast and/or impact loading. Expanding the current body of knowledge of how masonry structures perform under such conditions and developing reliable and robust modelling techniques is essential to improve both the efficiency and safety of the design and retrofitting of such structures. A great deal of research is currently ongoing to understand the behaviour of masonry under shock and impact loading, and this is proving to be a challenging endeavour. Masonry construction on the whole is surrounded by a high degree of variability ranging from the heterogeneity of the materials used, the degree of workmanship during construction and the uncertainty regarding the physical and mechanical properties of the brick-to-mortar interface. Masonry is known to experience a dynamic enhancement of its strength properties when subjected to impact loading and dynamic increase factors (DIFs) have been used to adjust static masonry properties accordingly when subjected to this type of loading. These DIFs are derived from sparse experimental tests and their use can be severely limited to the conditions of the tests performed, and the results obtained can carry a high degree of uncertainty. This paper considers the uncertainty present at the brick-to-mortar interface, by using Monte Carlo simulations, when subjected to dynamic loading in a standard triplet test using LS-DYNA. The results of the modelling have been compared, contrasted and discussed for use in a larger research project on the robust characterisation of masonry structures when subjected to blast and seismic loading.

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Section: General Overviewmentioning

confidence: 99%

Uncertainty in the numerical modelling of masonry triplet tests under dynamic loading

Puchades¹,

Judge²,

Beattie³

2016

Int. J. SAFE

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“…Ali y Page [6] han estudiado el comportamiento de paneles de fábrica bajo gradientes de tensiones altos debidos a cargas concentradas mediante un micromodelo completo. Riddington y Ghazali [7] han desarrollado un estudio experimental y numérico sobre el comportamiento de paneles de fábrica. Para el análisis numérico, ellos han trabajado con un micromodelo detallado en el cual unidades y mortero son representados por medio de elementos finitos de tensión plana y la interfase ladrillomortero por elementos de conexiones a manera de discontinuidades.…”

Section: A) Micromodelizaciónunclassified

“…Para el módulo de elasticidad del mortero se ha adoptado un valor aproximado a los valores encontrados mediante ensayos realizados por Riddington y Ghazali [7].…”

Section: B Propiedades De La Interfase Ladrillo-morterounclassified

The numerical models front to the behaviour of masonry elements tested in laboratory

Rodríguez¹,

Cabredo²,

Esperante³

2001

Inf. constr.

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“…Their findings showed that the increase in compressive strain in the vertical direction drives up the shear stress of the wall while simultaneously bringing down the deformative capacity of the structure [7]. In comparison, Riddington and Ghazali worked out the failure mechanism of the masonry wall structure under shear loading and analyzed the influence of stress changes in the vertical direction on the shear strength of the wall [8]. Hamid and Lotfi put a full-scale masonry wall of grouted concrete under vertical stress and imposed loading from the side.…”

Section: Introductionmentioning

confidence: 99%

Tests and Analysis of the Compressive Performance of an Integrated Masonry Structure of a Brick-Stem-Insulating Layer

et al. 2016

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This paper proposes, for low buildings, an integrated wall structure of a brick-stem-insulating layer, which plays a major part in both heat preservation and force bearing. The research team has tested the thermal performance of the structure, the results of which are satisfying. To further study the force-bearing performance, the paper carries out compressive tests of specimens of different structural design, with two types of bricks, i.e., clay and recycled concrete bricks; three types of stems, i.e., square-shaped wood, square-shaped steel pipe and circular steel pipe; and one type of insulating layer, i.e., fly ash masonry blocks. Afterward, the force bearing performance, damage that occurred, compressive deformation and ductility of all of the specimens are compared. On the sideline, the structure is applied in the construction of a pilot residence project, yielding favorable outcomes. The results indicate that in comparison with a brick wall with an insulating layer sandwiched in between, the integrated wall structure of bricks and fly ash blocks is a more preferable choice in terms of compressive performance and ductility. The integrated wall structure of brick-stem-fly ash blocks delivers much better performance to this end. Note that regarding the stem's contribution to compressive strength, circular steel pipe is highest, followed by square-shaped steel pipe and then square-shaped wood. The compressive performance of the sandwiched blocks surpasses that of the two brick wall pieces combined by a large margin.

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Hypothesis for Shear Failure in Masonry Joints.

Cited by 23 publications

References 0 publications

Uncertainty in the numerical modelling of masonry triplet tests under dynamic loading

Uncertainty in the numerical modelling of masonry triplet tests under dynamic loading

The numerical models front to the behaviour of masonry elements tested in laboratory

Tests and Analysis of the Compressive Performance of an Integrated Masonry Structure of a Brick-Stem-Insulating Layer

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