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Assessment of the effects of infill walls’ layout in plan and/or elevation on the seismic performance of 3D reinforced concrete structures

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Abstract

This paper evaluates the effects of infill walls’ layout in plan and/or elevation on the seismic performance of a 3D reinforced concrete structure located in a zone of high seismicity. A pushover analysis procedure is performed to assess the seismic performance the RC structure with different infill walls’ layout, and study the results linked to the capacity curves, absorbed energy, inter-story drift and the performance levels. Then, it is also necessary to check their effect on torsion in structure. In order to check whether or not the structure is subjected to torsion, a linear dynamic analysis was used. Additionally, the fiber-section-based macro-modeling was used to model the infill walls. Thanks to the results obtained, the infill walls presence in the building increases the lateral stiffness and modifies the structural behavior. The results also reveal that it is necessary to take into account the effects caused by the infill walls’ layout, since the non-uniform layout of the infill walls can lead to a deterioration of the performance level of building after an earthquake. Indeed, an increase in the absorbed energy leads to an increase in the inter-story drift and the risks of deterioration or collapse. To avoid this, buildings should have a uniform layout of infill walls. In addition, the random layout and asymmetry of the masonry infill number on both sides of the building reveal an additional torsion force in the latter. The lack of masonry walls on the first story can lead to irregular stiffness and soft-story phenomenon.

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The data used to support the findings of this study are available from the corresponding author upon request.

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All authors contributed equally to this research but Salah Guettala wrote this paper.

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Correspondence to Salim Guettala.

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Guettala, S., Abdesselam, I., Chebili, R. et al. Assessment of the effects of infill walls’ layout in plan and/or elevation on the seismic performance of 3D reinforced concrete structures. Asian J Civ Eng 25, 657–673 (2024). https://doi.org/10.1007/s42107-023-00802-2

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  • DOI: https://doi.org/10.1007/s42107-023-00802-2

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