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Fragility functions for unreinforced masonry walls subjected to cyclic lateral and constant vertical loading

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Abstract

Regarding the investigation of previous earthquake records and a large number of casualties in unreinforced masonry structures, the necessity and importance of finding applicable methods and evaluating the vulnerability of this category of structures is felt more than before. In this article, at first, 191 unreinforced masonry specimens under cyclic lateral load and constant vertical load are extracted from multiple articles. Then, the amount of drift is extracted in four different damage states, and the fragility curve is plotted for four different failure modes (rocking, toe crushing, bed joint sliding, diagonal tension) and four different damage states; In these plots, it can be seen that for the three damage states 2, 3 and 4 with the same failure probability, rocking, toe crushing, bed joint sliding, and diagonal tension state have higher displacement, respectively. To investigate the effect of the wall's support conditions on the fragility curve for different failure modes, the fragility curves are plotted in two cases: the cantilever boundary condition and the double fixed boundary condition. At last, the method used for extracting the fragility functions is explained.

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Correspondence to Somaye Ghaderi.

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Ghaderi, S., Kassaeian, S. & Negahdar, O. Fragility functions for unreinforced masonry walls subjected to cyclic lateral and constant vertical loading. Life Cycle Reliab Saf Eng 11, 337–354 (2022). https://doi.org/10.1007/s41872-022-00208-0

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