Influence of a window-type opening on the shear response of partially-grouted masonry shear walls

Calderón, Sebastián; Sandoval, Cristián; Inzunza, Ernesto; Cruz-Noguez, Carlos; Rahim, Amr Ba; Vargas, Laura

doi:10.1016/j.engstruct.2019.109783

Cited by 29 publications

(6 citation statements)

References 22 publications

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“…It also can be observed that the presence of interior vertical reinforcement bars did not deviate the crack pattern from the characteristic diagonal crack pattern of shear-dominated failures. This situation is contrary to the observed in studies carried out in shear walls made of multi-perforated clay bricks [35] and hollow clay blocks [36]. The progression of damage on Wall HCBW1A was also monitored with several strain gauges (SGs), which were stuck to horizontal reinforcement elements at the locations indicated in Figure 9a.…”

Section: Damage Progressionmentioning

confidence: 72%

“…Considering this context, the idealized envelope curve and the ductility in a load direction were calculated herein with a conservative approach. Consequently, δ u was assumed as the deformation at maximum lateral resistance (δ Vmax ), as already done in previous studies [21,28,35,37,41]. This hypothesis is based on the fact that the post-peak response of masonry shear walls exhibits large variability and represents an undesirable damage state to achieve.…”

Section: Ductilitymentioning

confidence: 99%

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Behavior of Partially Grouted Concrete Masonry Walls under Quasi-Static Cyclic Lateral Loading

et al. 2020

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Eight partially grouted (PG-RM) concrete masonry walls were tested to study the influence of the strength and width of blocks, the wall aspect ratio, the horizontal and vertical reinforcement ratio, and the presence of edge elements (flanges). The results were analyzed in terms of the failure mode, damage progression, shear strength, lateral stiffness degradation, equivalent viscous damping ratio, and displacement ductility. Additionally, the performances of some existing shear expressions were analyzed by comparing the measured and predicted lateral load capacity of the tested walls. Based on the results, a slight increment in the lateral stiffness was achieved when employing stronger blocks, while the shear strength remained constant. Besides, increasing the width of concrete blocks did not have a significant effect on the shear strength nor in the initial tangential stiffness, but it generated a softer post-peak strength degradation. Increasing the wall aspect ratio reduced the brittleness of the response and the shear strength. Reducing the amount of vertical reinforcement lowered the resulting shear strength, although it also slowed down the post-peak resistance degradation. Transversal edge elements provided integrity to the wall response, generated softer resistance degradation, and improved the symmetry of the response, but they did not raise the lateral resistance.

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Section: Damage Progressionmentioning

confidence: 72%

Section: Ductilitymentioning

confidence: 99%

Behavior of Partially Grouted Concrete Masonry Walls under Quasi-Static Cyclic Lateral Loading

et al. 2020

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“…As commented, the models predicted the tested walls' lateral in-plane resistance with an acceptable degree of precision. Therefore, the models' accuracy was also compared with that of selected shear expressions that have been studied in previous researches by the authors [3,4,35]. Particularly, the evaluated expressions were Shing et al [36] (Eq.…”

Section: Results Of Simulationsmentioning

confidence: 99%

“…According to recent studies [3,4], some shear estimation expressions give non-conservative results or large error ranges when assessing the resistance of bed-joint reinforced (BJR) PG-RM shear walls. In this sense, Araya-Letelier et al [5] have pointed out the need for more experimental evidence to fill out gaps in the knowledge and propose a more accurate shear design expression.…”

Section: Introductionmentioning

confidence: 99%

Detailed micro-modeling of partially grouted reinforced masonry shear walls: extended validation and parametric study

Calderón

Sandoval

Arnau

2021

Archiv.Civ.Mech.Eng

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Partially grouted reinforced masonry (PG-RM) shear walls have been widely used as structural elements in low- and medium-rise earthquake-resistant buildings. Nonetheless, assessing its shear strength represents a complex task mainly because the partial grouting provides a non-constant cross section, which results in heterogeneous stress–strain patterns. Consequently, refined modeling techniques are needed to reproduce local failure mechanisms taking place in these walls, which significantly influence the global response. In response to this issue, a detailed micro-modeling approach based on the finite element method was proposed in previous studies by the authors. Although the numerical strategy provided accurate results, further validation is required. Therefore, in this study, the experimental results of seven PG-RM shear walls of multi-perforated clay bricks with bed-joint reinforcement are employed as validation cases. These seven walls presented variations in five design parameters. The validated numerical model was then employed to perform a parametric study to assess the influence of the wall aspect ratio, axial pre-compression stress, and horizontal reinforcement ratio on the in-plane lateral behavior of PG-RM shear walls. The obtained results show that the three studied design parameters modified the crack patterns of the walls. Besides, increasing the axial pre-compression stress or reducing the aspect ratio resulted in higher walls’ shear strength. Additionally, decreasing the horizontal reinforcement ratio or increasing the aspect ratio generated a higher story-drift ratio at maximum lateral force. Finally, it was corroborated that the positive effect of the axial pre-compression stress on the walls’ shear strength decreases inversely proportional to the aspect ratio.

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“…Equally, the flows of temperature and moist air that go through windows are reflected in the appearance of humidity by condensation [20]. Additionally, despite its lesser impact, one must also point to the roles played by windows and their perimeter elements in the causes of some problems related to fissurations and to the stability walls, especially those made with bricks [21].…”

Section: Introductionmentioning

confidence: 99%

Cataloguing of the Defects Existing in Aluminium Window Frames and Their Recurrence According to Pluvio-Climatic Zones

et al. 2020

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The sustainability of building envelopes is affected by its windows, since these establish the connection/separation between the indoor rooms and the external environment. They can also lead to problems if they do not offer sufficient protection against external agents. The data source in this research is unprecedented, as it is based on records of court sentences. There is a significant number of cases (1615), which provides high representativeness for the functional reality of windows. The methodology that was developed classifies the defects and the causes that were found, also analysing correspondence with their recurrence according to aspects of climatological location. In the results, the cases pertaining to water infiltration, air permeability and humidity by condensation are highlighted. This study provides a vision that categorizes problems related to aluminium windows that may be useful for future interventions by agents participating in the construction process.

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Influence of a window-type opening on the shear response of partially-grouted masonry shear walls

Cited by 29 publications

References 22 publications

Behavior of Partially Grouted Concrete Masonry Walls under Quasi-Static Cyclic Lateral Loading

Behavior of Partially Grouted Concrete Masonry Walls under Quasi-Static Cyclic Lateral Loading

Detailed micro-modeling of partially grouted reinforced masonry shear walls: extended validation and parametric study

Cataloguing of the Defects Existing in Aluminium Window Frames and Their Recurrence According to Pluvio-Climatic Zones

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