原文传递
Seismic Shear Forces in Post-Tensioned Hybrid Precast Concrete Walls
| 题名： | Seismic Shear Forces in Post-Tensioned Hybrid Precast Concrete Walls |
| 其他题名： | ACI(American Concrete Institute).2009.Requirements for design of a special unbonded post-tensioned precast shear wall satisfying ACI ITG-5.1 and commentary.ACI ITG-5.2-09.Detroit:ACI. |
| 正文语种： | 英文 |
| 作者： | H. A. D. Samith Buddika |
| 关键词： | Higher-mode effects;Multilinear shear force design envelope;Postelastic amplification of shear force;Post-tensioned hybrid precast concrete wall; Post-tensioned rocking precast concrete wall; Reinforced concrete shear walls |
| 摘要： | A method to accurately calculate seismic shear forces in post-tensioned hybrid (PH) precast concrete walls under risk-targeted maximum considered earthquake (MCER) level ground motions is essential to avoid unexpected damage or possibly failure. Although extensive research on seismic performance evaluation of PH precast concrete walls has been carried out previously, the postelastic amplification of shear forces due to higher-mode effects, relative to the design shear forces computed using the equivalent lateral force (ELF) procedure, has been addressed only in a limited manner. In the present study, first the equations to calculate shear forces in PH precast concrete walls, post-tensioned rocking (PR) precast concrete walls, and reinforced concrete (RC) shear walls are examined and their limitations discussed. Then an extensive numerical study of PH precast concrete walls designed using the equivalent lateral force procedure is carried out. The applicability of currently available equations to calculate seismic base shear forces in PH precast concrete walls are evaluated by comparing them with the results of nonlinear response history analysis (NLRHA) using a suite of 40 ground motions. Next, the shear force distribution over the wall height in PH precast concrete walls is also investigated. Regarding the base shear force, it is found that the existing methods developed for PR precast concrete walls and RC shear walls can produce reasonable estimates of the base shear. In the case of the wall shear force along the height of the wall, existing methods for RC shear walls are found to provide good estimates. Based on the results obtained, (1) an equation to calculate the peak base shear force and (2) a multilinear shear force design envelope to calculate wall shear forces along the height of the PH precast concrete walls are proposed under MCER-level. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N07021 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002079 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 07 |
| 页码： | 275-292 |
相关文献
- Verification of a simple model for the lateral-load analysis and design of unbonded post-tensioned precast concrete walls
- Seismic resistance research product released by Pankow Foundation
- Hybrid System of Unbonded Post-Tensioned CLT Panels and Light-Frame Wood Shear Walls
- Potential Loss in Prestressing Tendon Forces under Long-Term Service Conditions: Cross-Laminated Timber Shear Wall Applications
- Experimental Response and Damage of SC-CLT Shear Walls under Multidirectional Cyclic Lateral Loading
- Numerical modeling of inverted-U-shaped connectors to enhance the performance of composite beams
检索历史
应用推荐
