- Title
- Parametric Study of the Behavior of Perforated URM Walls Under In-Plane Loading and Comparison with NZSEE Strength Prediction Formula
- Creator
- Howlader, Milon Kanti; Masia, Mark; Griffith, Michael C.
- Relation
- The 13th North American Masonry Conference. Proceedings of The 13th North American Masonry Conference (Salt Lake City, Utah 16-19 June, 2019) p. 1694-1706
- Publisher
- The Masonry Society
- Resource Type
- conference paper
- Date
- 2019
- Description
- The reliable prediction of strength and failure modes of perforated URM walls are important in the seismic assessment of URM buildings. These walls form part of the primary lateral load resisting system in URM buildings and have frequently suffered damage in previous earthquake events throughout the world. Due to the anisotropic characteristics of the masonry material, it is sometimes difficult to predict the behavior under seismic loading. The work reported in this paper focused on parametric studies using validated nonlinear finite element modeling (FEM) to improve the understanding of the in-plane behavior of URM walls. The FEM results were compared with the New Zealand Society for Earthquake Engineering (NZSEE) predicted maximum lateral strength and the probable failure modes to assess the reliability of the NZSEE provisions. The parameters considered in this study are the aspect ratio of the wall (pier and spandrel) and vertical pre-compression load. From this study, it is shown that there is a significant effect of the wall geometry on the failure modes and the load resistance capacity. Also, with the variation of vertical pre-compression load, the lateral load resistance capacity and ductility changed. In most of the cases investigated, the NZSEE equations for maximum shear strength and failure modes agree well with the FEM results.
- Subject
- unreinforced masonry; in-plane lateral loading; perforated walls; finite element modeling; aspect ratio; pre-compression load
- Identifier
- http://hdl.handle.net/1959.13/1460077
- Identifier
- uon:45855
- Identifier
- ISBN:9781929081615
- Language
- eng
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