| Title |
Effect of Multi-layered Buoyancy on Reduction of Seismic Force in Floatable Buildings |
| Authors |
박정아(Park, Jeong-Ah) ; 이영욱(Lee, Young-Wook) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.2.327 |
| Keywords |
Floatable Building; Earthquake; Acceleration Response Ratio; Small Scale Model; Multi Layered Buouancy |
| Abstract |
A floatable building system that installs a buoyancy body on the foundation is being used to mitigate flood damage. This study explored the
potential of using multi-layered buoyancy bodies beneath buildings to reduce seismic load transmission, even at low water levels. To evaluate
the reduction in seismic acceleration response before the building begins to float, vibration table experiments were conducted using 1/30 scale
models. The buoyancy body consisted of five layers of 5mm-thick EPS installed between the building and the base floor. In both rigid and
vibrating superstructure cases, the acceleration response ratio on the first floor was consistently lower when five layers of EPS were used
compared to when no EPS was installed. Similarly, the acceleration response ratio at the roof level showed an overall decrease with the
inclusion of the five-layer EPS system. |