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Damage control of the masonry infills in RC frames under cyclic loads: a full-scale test study and numerical analyses

Su, Q., Cai, G., Hani, M. , Si Larbi, A. & Tsavdaridis, K. D. ORCID: 0000-0001-8349-3979 (2022). Damage control of the masonry infills in RC frames under cyclic loads: a full-scale test study and numerical analyses. Bulletin of Earthquake Engineering, doi: 10.1007/s10518-022-01565-y

Abstract

This study investigates the effect of damage control methods on the seismic performance of masonry infilled walls in reinforced concrete (RC) frames, by experimentally investigating three full-scale infilled RC frames with different treatment details and finite element method (FEM) analysis. The control methods included full-length connecting steel rebars, styrene butadiene styrene (SBS) sliding layers, and two gaps between the wall and frame columns. The results indicated that the ductility, wall damage, and residual deformation of the frame with gaps or SBS layers were significantly improved. However, the initial stiffness, energy dissipation capacity, and lateral load-carrying capacity of the frames with SBS sliding layers all were reduced. The fully infilled frames exhibited a better lateral load-carrying capacity, stiffness, and energy dissipation capacity, but presented larger lateral residual deformation and lower ductility. The damage of the infilled walls in RC frames can be controlled by using longer connecting rebars. The gaps and sliding layers can both significantly reduce the in-plane damage of the walls. A simplified FEM model was proposed and applied to conduct a parametric analysis for an in-depth study of fully infilled RC frames with and without sliding layers. The results show that SBS is the optimal sliding layer material, and its optimal spacing in RC frames is recommended as 1000 mm.

Publication Type: Article
Additional Information: The version of record of this article, first published in Bulletin of Earthquake Engineering, is available online at Publisher’s website: https://doi.org/10.1007/s10518-022-01565-y
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Departments: School of Science & Technology > Engineering
[img] Text - Accepted Version
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