Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 33, Number 6, June 2024 , pages 415-430 DOI: https://doi.org/10.12989/sss.2024.33.6.415 |
|
|
|
Pedestrian- and wind-induced bi-directional compound vibration control using multiple adaptive-passive TMD-TLD system |
||
Liangkun Wang, Ying Zhou and Weixing Shi
|
||
| Abstract | ||
| To control vertical and lateral compound vibration simultaneously using an integrated smart controller, passive tuned mass damper (TMD) and tuned liquid damper (TLD) are updated and combined to an adaptive-passive TMD-TLD (APTMD-TLD) system. As for the vertical AP-TMD part on top of the vertical spring, it can retune itself through varying the level of liquid in the tank to adjust its mass, while the lateral AP-TLD part at the bottom of the vertical spring can retune itself by changing the level of liquid. Further, for multimodal response control, the multiple AP-TMD-TLD (MAP-TMD-TLD) system is proposed as well. Each AP-TMD-TLD in the system can identify the structural vertical and lateral modal frequencies through the wavelet-transform (WT) based algorithm and retune its vertical and lateral natural frequencies both through adjusting the level of liquid in the AP-TMD and AP-TLD parts respectively. A cantilever cable-stayed landscape bridge which is sensitive to both human-induced and wind-induced vibrations is presented as a case study. For comparison, initial parameters of MAPTMD-TLD are mistuned. Results show that the presented system can retune its vertical and lateral frequencies precisely, while the retuned system has a better bi-directional compound control effect than the mistuned system before the retuning operation and can improve the serviceability significantly. | ||
| Key Words | ||
| adaptive tuned liquid damper; cantilever cable-stayed landscape bridge; human-induced vibration; multiple tuned mass damper; serviceability problem; wind-induced vibration | ||
| Address | ||
| (1) State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, 200092, P.R. China; (2) Department of Disaster Mitigation for Structures, Tongji University, Shanghai, 200092, P.R. China. | ||