| Title |
Vibration Performance Evaluation of CLT-Concrete Composite Floor for Applying Wooden Apartment |
| Authors |
안진현(An, Jin-Hyun) ; 김성용(Kim, Sung-Yong) ; 오근영(Oh, Keunyeong) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.6.247 |
| Keywords |
Cross-Laminated timber (CLT); Timber-Concrete Composite (TCC); Floor Vibration; Serviceability; Numerical Analysis |
| Abstract |
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, and
dynamic stiffness. All floors exhibited fundamental frequencies above 10 Hz, indicating no risk of resonance under walking loads. TCC-210
achieved the highest damping ratio (1.80%) and dynamic stiffness, demonstrating enhanced vibration control through the structural coupling of
timber and concrete. Notably, TCC-210 satisfied the recommended response factor for office environments proposed by the Steel Construction
Institute (SCI). Finite element analysis was then conducted to evaluate floor vibration performance in a wooden apartment setting, revealing
that TCC floors demonstrated the most favorable results. Both the experiments and the analyses were performed under conservative
conditions, suggesting that real-world performance might be underestimated. In particular, considering boundary conditions and non-structural
elements could further improve vibration behavior. These findings highlight the potential of TCC technology for timber buildings, while
underscoring the need for continued research, refined design guidelines, and domestic standards to fully realize its capabilities. |