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Out-of-Plane Behavior of Load-Bearing Reinforced Masonry Shear Walls
| 题名： | Out-of-Plane Behavior of Load-Bearing Reinforced Masonry Shear Walls |
| 正文语种： | 英文 |
| 作者： | Shady Salem, A.M.ASCE1; Mohamed Ezzeldin, A.M.ASCE2; Wael El-Dakhakhni, F.ASCE3; and Michael Tait, M.ASCE4 |
| 作者单位： | 1Lecturer, Dept. of Civil Engineering, British Univ. in Egypt, Suez Desert Rd., P.O. Box 43, El-Sherouk City, Cairo 11837, Egypt; formerly, Ph.D. Candidate, Dept. of Civil Engineering, McMaster Univ., 1280 Main St. West, Hamilton, ON, Canada L8S 4L7 (corresponding author). 2Assistant Professor, Dept. of Civil Engineer, McMaster Univ., 1280 Main St. West, Hamilton, ON, Canada L8S 4L7. 3Martini, Mascarin and George Chair in Masonry Design, and Director, McMaster Institute for Multi-Hazard Systemic Risk Studies, Dept. of Civil Engineering, McMaster Univ., 1280 Main St. West, Hamilton, ON, Canada L8S 4L7. 4Joe NG/JNE Consulting Chair in Design, Construction and Management in Infrastructure Renewal, and Chair, Dept. of Civil Engineering, McMaster Univ., 1280 Main St. West, Hamilton, ON, Canada L8S 4L7. |
| 关键词： | Axial load; Blast; Out-of-plane; Plastic hinge; Reinforced masonry; Resistance function |
| 摘要： | The increase in the number of deliberate and accidental explosion events over the past two decades has necessitated evaluating the performance of blast-vulnerable structural components and developing subsequent risk mitigation strategies. In this context, several studies have focused on the out-of-plane behavior of either unreinforced masonry walls or non-load bearing reinforced masonry shear walls (RMSWs). However, to date, few studies have focused on the interaction between the axial load and the out-of-plane (e.g., when shear walls are subjected to blast loads) demands on such walls. As such, the current study focuses on evaluating the out-of-plane behavior of seismicallydetailed RMSWs with different design parameters. In this respect, the experimental results of seven scaled RMSWs, with different in-plane ductility seismic classifications and axial stress levels, subjected to out-of-plane loading are first presented. Such results include the wall damage sequence, load-displacement response, stiffness degradation, and energy dissipation. Subsequently, the resistance function predictions based on the Unified Facilities Criteria guidelines are compared with the experimental results. Furthermore, an experimentally validated analytical resistance function is developed considering the postpeak behavior of RMSWs, including second-order effects. The current study extends the database of experimental and analytical results pertaining to load-bearing RMSWs, to facilitate the development of relevant provisions within the next generation of blast design standards. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 145 |
| 期： | 11 |
| 页码： | 1-17 |
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