| Title |
Dynamic Characteristics Evaluation of Long-span Full-scale Modernized Hanok Through Field Vibration Test |
| Authors |
김영민(Kim, Yeong-Min) ; 이상현(Lee, Shag-Hyun) ; 문대호(Mun, Dea-Ho) |
| DOI |
https://doi.org/10.5659/JAIK.2022.38.12.345 |
| Keywords |
Timber Structure ; Modal Characteristics ; Ambient Vibration ; Human Excitation ; |
| Abstract |
In this study an ambient vibration test, impact hammer test, and human excitation tests on a long-span full-scale modernized Hanok, which is
one of the Korean traditional architectural structures were performed to identify its modal characteristics. Test results showed that the first
two fundamental modes were beam and dori directional translation modes and the natural frequencies were 3.85Hz and 4.90Hz respectively.
These values were larger than about 1.8-3.5 times in the first translation modes in similar-sized Korean traditional Hanoks. The increase of
natural frequencies was mainly due to the significant decrease of the roof weight in modernized Hanok construction in spite of the stiffness
reduction resulting from column-free long-span. The damping ratios of the translation modes were in the range of 2.5-3.5% and these values
were similar to damping ratios of 1.5-4.5% measured in a traditional Hanok. Considering that the damping ratios of the building structures
had amplitude dependent characteristics, the damping ratios of the Hanok structures were approximately two times larger than those of
general RC or steel structures showing similar amplitude dynamic responses. |