原文传递
Flexural Behavior of Lightweight Aggregate Concrete Shear Walls with Boundary Element
| 题名： | Flexural Behavior of Lightweight Aggregate Concrete Shear Walls with Boundary Element |
| 正文语种： | eng |
| 作者： | Yang, Keun-Hyeok;Mun, Ju-Hyun;Oh, Na-Kyung |
| 作者单位： | Kyonggi Univ Dept Architectural Engn 154-42 Gwanggyosan Ro Kyonggi Do 16227 South Korea;Kyonggi Univ Dept Architectural Engn 154-42 Gwanggyosan Ro Kyonggi Do 16227 South Korea;Kyonggi Univ Grad Sch Dept Architectural Engn Kyonggi Do 16227 South Korea |
| 关键词： | Shear wall;Lightweight aggregate concrete (LWAC);Flexural behavior;Concrete unit weight;Confinement |
| 摘要： | This study examined the effects of the unit weight of concrete (omega(c)) on the flexural performance of shear walls with different amounts (Ash) of transverse reinforcement in the boundary elements. Six shear wall specimens with barbell-shaped cross sections were tested up to failure under a constant axial load and cyclic lateral loads. Backbone curves determined using the cyclic lateral load-displacement of shear walls were compared with predictions obtained using the two-dimensional (2D) nonlinear laminar approach to examine the effect of omega(c) on the confinement pressure provided by the transverse reinforcement. The test results indicated that lightweight aggregate concrete (LWAC) shear walls exhibited a smaller displacement ductility ratio and cumulative work damage indicator than their normal-weight concrete (NWC) shear wall counterparts. The conservatism of the ACI 318-19 approach using the equivalent stress block for estimating the moment capacity of shear walls was somwhat affected by omega(c) or A(sh). Meanwhile, the confinement by transverse reinforcement in the boundary elements tended to decrease with a decrease in omega(c), which resulted in earlier damage to the longitudinal reinforcement and a faster reduction in the applied load at the post-peak performance for LWAC shear walls than for NWC ones with the same Ash. The current 2D nonlinear laminar approach can accurately estimate the overall flexural performance of shear walls made using different types of concrete. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 1 |
| 页码： | 04021243.1-04021243.14 |
相关文献
- Interface shear transfer of lightweight-aggregate concretes with different lightweight aggregates
- Cyclic Loading Test for Composite Walls with U-Shaped Steel Boundary Elements
- Shear Strength Prediction of Reinforced Concrete Walls with Opening and Boundary Elements
- Analysis of Reinforced Concrete Shear Walls with Different End Configurations for Seismic Design
- Parametric Studies on Seismic Performance of New Precast Braced Concrete Shear Walls under Cyclic Loading
- Seismic Behavior of Steel Plate Reinforced Concrete Composite Shear Walls under Tension-Bending-Shear Combined Cyclic Load
检索历史
应用推荐
