목조 공동주택 적용을 위한 CLT-콘크리트 합성바닥판의 진동성능 평가 (Vibration Performance Evaluation of CLT-Concrete Composite Floor for Applying Wooden Apartment)

서지정보

· 발행기관 : 대한건축학회
· 수록지 정보 : 대한건축학회논문집 / 41권 / 6호 / 247 ~ 256페이지
· 저자명 : 안진현, 김성용, 오근영

초록

본 연구는 60mm 콘크리트 토핑을 결합한 교차 적층 목재(CLT) 기반 TCC 바닥과 단일 CLT 바닥의 진동 성능을 비교하였다. TCC-210은 가장 높은 감쇠비(1.80%)와 동적 강성을 보이며, SCI가 제안한 사무실 권장 응답 계수에 준하는 성능을 보였다. 목조 공동주택을 대상으로 한 유한요소해석(FEA)에서도 TCC 바닥이 우수한 성능을 확인했다. 평가가 보수적이었을 수 있으나, TCC 바닥의 잠재력과 국내 기준의 필요성을 강조한다.

영어초록

This study compares the vibration performance of timber-concrete composite (TCC) floors, formed by combining cross-laminated timber (CLT)and a 60 mm concrete topping, with that of single CLT floors. Two CLT specimens (T-150 and T-210) and one TCC specimen (TCC-210)underwent impact hammer and walking tests to measure their dynamic properties, including fundamental frequency, damping ratio, anddynamic stiffness. All floors exhibited fundamental frequencies above 10 Hz, indicating no risk of resonance under walking loads. TCC-210achieved the highest damping ratio (1.80%) and dynamic stiffness, demonstrating enhanced vibration control through the structural coupling oftimber and concrete. Notably, TCC-210 satisfied the recommended response factor for office environments proposed by the Steel ConstructionInstitute (SCI). Finite element analysis was then conducted to evaluate floor vibration performance in a wooden apartment setting, revealingthat TCC floors demonstrated the most favorable results. Both the experiments and the analyses were performed under conservativeconditions, suggesting that real-world performance might be underestimated. In particular, considering boundary conditions and non-structuralelements could further improve vibration behavior. These findings highlight the potential of TCC technology for timber buildings, whileunderscoring the need for continued research, refined design guidelines, and domestic standards to fully realize its capabilities.

참고자료

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