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.

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1. 서 론
2. 해석이론
    2.1 TLD의 등가 모델링
    2.2 원통형 TLD의 모드 특성과 감쇠 메커니즘
3. 모형 구조물과 원통형 TLD 개요
    3.1 모형 구조물의 개요
    3.2 원통형 TLD의 구성 및 댐퍼 설치 방법
    3.3 감쇠비 산정
4. TLD를 이용한 진동제어
    4.1 TLD 설치에 따른 구조물 응답 특성
    4.2 TLD 내부 댐퍼 설치에 따른 감쇠 성능 비교
5. 결 론
/ REFERENCES /

• 이창형(제이스코리아 대표이사) | Lee Changhyung (CEO, JACE　KOREA Inc.)
• 이우선(건국대학교 사회환경공학부 석사) | Lee Woosun (Graduate Student, Department of Civil Engineering, Konkuk University) Corresponding author
• 유제현(건국대학교 사회환경공학부 석사) | Yoo Jehyeon (Graduate Student, Department of Civil Engineering, Konkuk University)
• 하동호(건국대학교 사회환경공학부 교수) | Ha Dong-ho (Professor, Department of Civil Engineering, Konkuk University)