Summary Damage observed following moderate to large earthquakes has shown masonry buildings are vulnerable to lateral shaking. The results of statistical analyses in Iran show that 90% of schools in the retrofitting list are unreinforced masonry buildings. A Practical Guideline for Seismic Rehabilitation of Masonry Schools has been published in Iran. This guideline proposed 2 retrofitting methods for retrofitting masonry schools: use of shear wall and shotcreting the perimeter of building. In the case of shear wall, their construction is usually expensive; there are less projects retrofitted by shear walls, and in most retrofitting masonry schools projects, perimeter shotcrete is used. The main aim of this study is offering recommendation to improve this guideline, resulting in more economical approaches. This study proposes including lateral resistance of masonry walls in resisting seismic loads and in the case of shear wall foundation proposes strip shallow foundation for concrete shear walls by including effect of rocking, sliding, and settlement response. It has been shown that with including masonry walls in lateral resistance of building, a considerable reduction in maximum drift occurred. Interaction of soil and structure by considered strip shallow foundation reduces the base shear and increases maximum drift of the building.
In most seismic regions of the world, many unreinforced masonry buildings have been constructed for different uses, including schools. Statistical analyses showed that 90% of schools on the retrofitting list in Iran are unreinforced masonry buildings. The addition of shear walls is a frequently used retrofitting method in these buildings. However, in most seismic rehabilitation projects, the lateral resistance of the masonry walls is neglected when determining the lateral resistance of the building and therefore the whole lateral resistance of the structure is provided by the newly added shear walls. In this study, the effects of including the lateral resistance of masonry walls in resisting seismic loads was investigated in order to reduce the cost of retrofitting. To achieve this, it was necessary to properly assess the non-linear behaviour of masonry buildings. This paper presents a modelling technique for non-linear static and dynamic analyses of masonry buildings in order to investigate the interaction between masonry walls and squat shear walls. By including masonry walls in the lateral resistance of a building, a considerable reduction in maximum drift was observed. For the representative building considered in this study, the lateral drift of the building decreased by 30% in the north–south direction and by 10% in the east–west direction.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.