原文传递
Behavior of Seismically Detailed Reinforced Concrete Block Shear Walls with Boundary Elements under Out-of-Plane Loading
| 题名： | Behavior of Seismically Detailed Reinforced Concrete Block Shear Walls with Boundary Elements under Out-of-Plane Loading |
| 正文语种： | 英文 |
| 作者： | Tarek El-Hashimy, S.M.ASCE; Mohamed Ezzeldin, A.M.ASCE;Wael El-Dakhakhni, F.ASCE; Michael Tait, M.ASCE |
| 作者单位： | McMaster Univ |
| 关键词： | Boundary elements; Concrete block: Damage; Failure mechanism; Out-of-plane loading; Shear wall; Two-way bending |
| 摘要： | Although boundary elements have been known to enhance the in-plane performance of reinforced concrete block shear walls under seismic loading, research examining their influence on the walls' out-of-plane performance (e.g., due to blast loading) is very scarce. Unlike conventional walls with rectangular cross sections, boundary elements allow the use of closed ties and multiple layers of vertical reinforcement, thus enhancing the waifs overall out-of-plane resistance and stiffness. Nevertheless, the corresponding wall performance and damage sequence beyond peak resistance have been neither experimentally nor analytically quantified to date. Therefore, current blast stan-dards do not assign un ique design requirements or response limits for rein forced concrete block walls with boundary elements due to the limited number of relevant studies published when these standards were originally developed. To address this knowledge gap, an experimental program was initiated to investigate the out-of-plane performance of seven scaled seismically-detailed reinforced concrete block axially loaded walls with boundary elements under quasi-static displacement-controlled cyclic loading. Several design parameters were considered in the test matrix, which included the wall vertical reinforcement ratio and distribution, the boundary elements alignment relative to the wall web, the wall aspect ratio, and axial load level. The resista nee function of the walls and the corresponding damage sequence, as well as the ductility capacity were also used to assess the walls' out-of-plane performances. Finally, two experimentally validated models, based on plastic analysis, were developed to generate the resistance functions of all walls. The experimental and analytical results in the current study demonstrated the importance of considering the two-way bending mechanism associated with reinforced concrete block walls with boundary elements when their performance is evaluated under out-of-plane loading demands. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.146 |
| 期： | No.03 |
| 页码： | 04020005 |
相关文献
- Out-of-Plane Performance of Reinforced Masonry Shear Walls Constructed with Boundary Elements
- Response Evaluation of Reinforced Concrete Block Structural Walls Subjected to Blast Loading
- Masonry Walls under Combined In-Plane and Out-of-Plane Loadings
- Response of Full-Scale Slender Masonry Walls with Conventional and NSM Steel Reinforcement Subjected to Axial and Out-of-Plane Loads
- Out-of-Plane Behavior of Slender Reinforced Masonry Shear Walls under In-Plane Loading: Experimental Investigation
- Validation of a Numerical Model for Prediction of Out-of-Plane Instability in Ductile Structural Walls under Concentric In-Plane Cyclic Loading
检索历史
应用推荐
