Influence of different design parameters on the seismic performance of partially grouted masonry shear walls

Calderón, Sebastián; Sandoval, Cristián; Araya-Letelier, Gerardo; Inzunza, Ernesto; Arnau, Oriol

doi:10.1016/j.engstruct.2021.112058

Cited by 17 publications

(15 citation statements)

References 14 publications

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“…4a-f and whose principal characteristics are presented in Table 1. The walls were tested by Calderón et al [19], under constant axial pre-compression stress and cyclic incremental displacements. The wall CLBW1 represented the base-case, and the other specimens had variations regarding the wall CLBW1.…”

Section: Description Of the Validation Casesmentioning

confidence: 99%

“…The wall CLBW5 was built with a joint thickness of 20 mm on average, which accounted for possible Fig. 4 a-f Walls employed in the validation of the modeling approach (measurements in mm) (Adapted from [19]). g Experimental setup construction defects, likely to occur when the onsite technical inspection is deficient.…”

Section: Description Of the Validation Casesmentioning

confidence: 99%

“…In this latter wall, axial pre-compression stress of 10% of the average masonry compression strength ( f m ) was applied, roughly. It is worth mentioning that Calderón et al [19] measured the masonry compression strength ( f m ) by testing three bricks stack-bond prisms, which were built in parallel during the construction of the wall specimens with the same materials and construction procedures. The average results of those tests are reported in Table 1.…”

Section: Description Of the Validation Casesmentioning

confidence: 99%

“…The reader is referred to the Calderón et al [19] research article for further information on the experimental program.…”

Section: Description Of the Validation Casesmentioning

confidence: 99%

“…Therefore, in this work, the modeling approach proposed by Calderón et al [11] is used to reproduce the shear response of seven new BJR-PG-RM shear walls of MPCLBs as an extended verification study. The selected validation cases, tested by Calderón et al [19], had variations in the height-to-length (aspect) ratio, bricks' height, mortar joints' thickness, axial pre-compression stress, and horizontal reinforcement ratio. Once the methodology's accuracy was checked, it was used to perform a parametric study on the influence of the aspect ratio, horizontal reinforcement ratio, and axial pre-compression stress on the in-plane lateral behavior of BJR-PG-RM shear walls of MPCLBs.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Description Of the Validation Casesmentioning

confidence: 99%

Section: Description Of the Validation Casesmentioning

confidence: 99%

Section: Description Of the Validation Casesmentioning

confidence: 99%

“…The reader is referred to the Calderón et al [19] research article for further information on the experimental program.…”

Section: Description Of the Validation Casesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%