| Title |
A Shaking Table Test for Increase of Damping Ratios of a Tuned Liquid Damper |
| Authors |
You Ki-Pyo ; Cho Ji-Eun ; Kim Young-Moon |
| Keywords |
Tuned Liquid Damper ; Shaking Table ; Rectangular Water Tank ; Triangle Stick |
| Abstract |
Wind induced vibration of tall buildings have been of interest to engineering for a long time. Most effective of Wind-induced vibration control of a tall building use passive control devices. This paper investigates the effect of damping ratios using a triangular shaped bar in order to increase the TLD damping ratio for a rectangular TLD tank with a shallow water. Triangular shaped bars were installed at the base of a water tank in which the height (H) of these bars were 60mm, 80mm, and 100mm. These bars were installed by 1, 2, and 3 with a specific distance at the base of a water tank in order to experiment for certain applied amplitudes. The installation of dampers didn't affect the natural frequency. In the characteristics of the base shearing force and wave height, it is evident that the small excited vibration amplitude (1mm~5mm) presented a decreased rate of about 40% as the maximum value, and the large excited vibration amplitude (20mm) presented about 20% of the decreasing rate. These effects were also observed in the change in the damping ratio. |