Research on Seismic Response Control of Flexible Structures Using TLDs with Different Depth-Length Ratios

FENG Ruming; CAO Qixiang; GUO Zisheng; ZOU Hongyun; ZHANG Zili

doi:10.3724/j.gyjzG25092501

Volume 56 Issue 10

Oct. 2026

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FENG Ruming, CAO Qixiang, GUO Zisheng, ZOU Hongyun, ZHANG Zili. Research on Seismic Response Control of Flexible Structures Using TLDs with Different Depth-Length Ratios[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 121-131. doi: 10.3724/j.gyjzG25092501

Citation:

FENG Ruming, CAO Qixiang, GUO Zisheng, ZOU Hongyun, ZHANG Zili. Research on Seismic Response Control of Flexible Structures Using TLDs with Different Depth-Length Ratios[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 121-131. doi: 10.3724/j.gyjzG25092501

Citation:

FENG Ruming, CAO Qixiang, GUO Zisheng, ZOU Hongyun, ZHANG Zili. Research on Seismic Response Control of Flexible Structures Using TLDs with Different Depth-Length Ratios[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 121-131. doi: 10.3724/j.gyjzG25092501

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Research on Seismic Response Control of Flexible Structures Using TLDs with Different Depth-Length Ratios

doi: 10.3724/j.gyjzG25092501

1. Shanwei Branch, CGN New Energy Co., Ltd., Shanwei 516600, China;
2. Department of Structural Engineering, Tongji University, Shanghai 200092, China;
3. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

Received Date: 2025-09-25
Available Online: 2026-11-06

Abstract

Abstract

This study investigated the vibration reduction performance of a Tuned Liquid Damper （TLD） on the seismic response of flexible structures under different liquid depths through shake table tests and theoretical analysis．Particular attention was paid to analyzing the effects of the mass ratio μ and the depth-to-length ratio （h/L） on the vibration control performance of the TLD． The results indicate that， within the tested parameter range， as the depth-to-length ratio increased from 0.05 to 0.20 and the mass ratio simultaneously increased from 2.72% to 10.7%， the mean displacement reduction ratio increased from approximately 48% to 73%， while the mean acceleration reduction ratio increased from approximately 31% to 75%. Because these two parameters varied concurrently in the experimental design， the observed trend represents their combined influence on the vibration reduction performance of the TLD， and their individual contributions cannot be independently evaluated from the present test results．A nonlinear reduced-order theoretical model of the TLD was employed to analyze the modal damping parameters under different liquid depths．The simulations based on this model showed good agreement with the experimental results in both the time and frequency domains，confirming the model’s accuracy．Furthermore，the first-order sloshing modal damping parameters，identified by integrating the theoretical model and experimental data，decreased as the depth-to-length ratio increased．This trend revealed the inherent liquid sloshing damping characteristics of TLDs under varying water depths： shallow-water TLDs exhibited higher inherent sloshing damping，whereas deep-water TLDs exhibited lower inherent sloshing damping．
- Tuned Liquid Damper （TLD）,
- shake table test,
- depth-to-length ratio,
- nonlinear reduced-order theoretical model,
- modal damping parameter

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References(26)

References

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