Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Experimental Study on Damping Ratio Increases of Circular TLDs With Dampers

댐퍼를 이용한 원통형 TLD의 감쇠비 증가에 관한 실험적 연구

  • 이창형 (제이스코리아) ;
  • 이우선 (건국대학교 사회환경공학부) ;
  • 유제현 (건국대학교 사회환경공학부) ;
  • 하동호 (건국대학교 사회환경공학부)
  • Received : 2025.09.27
  • Accepted : 2025.10.16
  • Published : 2025.11.01
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Abstract

In this study, we performed experiments aimed at improving the performance of circular Tuned Liquid Dampers (TLDs). TLDs offer numerous advantages over other passive vibration control devices. They are easy to install not only in new structures but also in existing ones, and they provide high cost efficiency compared to Tuned Mass Dampers (TMDs). Maintenance is straightforward, requiring only checks of the liquid level and inspections for any leakage. To adjust the natural frequency of a TLD for both installation and maintenance, we can simply manage the liquid level within the device. However, much of the existing research on enhancing TLD performance has focused on rectangular shapes. Therefore, we conducted experiments to investigate ways to achieve an improved damping ratio in circular TLDs equipped with internal dampers. A large number of shaking table experiments were carried out using various configurations of TLDs with dampers. We explored different arrangements of dampers and compared their performance against that of conventional TLDs.

Keywords

References

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