原文传递
Adaptive Passive Negative Stiffness and Damping for Retrofit of Existing Tall Buildings with Tuned Mass Damper: TMD-NSD
| 题名： | Adaptive Passive Negative Stiffness and Damping for Retrofit of Existing Tall Buildings with Tuned Mass Damper: TMD-NSD |
| 正文语种： | eng |
| 作者： | Meng Wang;Satish Nagarajaiah;Lin Chen |
| 作者单位： | Beijing Univ. of Technology;Rice Univ.;Tongji Univ. |
| 关键词： | Tuned mass damper (TMD);Tall buildings;Negative stiffness devices (NSDs);Multihazard vibration control;Retrofitting problem |
| 摘要： | Abstract It is known that the performance of traditional passive tuned mass dampers (TMDs) is highly sensitive to vibration frequency. The fundamental frequency of existing tall buildings may shift to lower value due to damage or other reasons. In this regard, this paper deals with the resultant detuning problems of a traditional passive TMD for vibration control by retrofitting it with a passive adaptive negative stiffness device (NSD). The applied NSD not only provides negative stiffness for adjusting the TMD’s de-tuned stiffness at its working stage, but also offers a fail-safe limiting stop for the TMD at large deformation/stroke. In this study, compared to the original TMD, a novel TMD-NSD assembly is proposed that is shown to be more effective for serviced structures. For example, the original TMD can only provide about 2.83% additional damping ratio to frequency-changed structures, while the newly proposed TMD-NSD further improves the damping ratio to 5.34%. Moreover, in the study it is found that the TMD-NSD also outperforms the TMD in resisting dynamic lateral loading such as along winds, cross winds, and earthquakes. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 11 |
| 页码： | 1-13 |
相关文献
- Adaptive Stiffness Structures with Dampers: Seismic and Wind Response Reduction Using Passive Negative Stiffness and Inerter Systems
- Dynamic Characteristics and Responses of Damped Outrigger Tali Buildings Using Negative Stiffness
- Design of Tuned Mass Damper Fluid Inerter for Wind-Induced Vibration Control of a Tall Building
- Erratum for "Wind-Induced Vibration Mitigation in Tall Buildings Using the Tuned Mass-Damper-Inerter" by Agathoklis Giaralis and Francesco Petrini
- Bioinspired Tuned Mass Damper for Mitigation of Wind-Induced Building Excitation
- Multihazard Optimization-Based Simultaneous Design of Multistory Concrete Structures and TMDs
检索历史
应用推荐
