| 英文摘要 |
The installation schemes for viscous dampers implemented into seismic design and retrofit for buildings worldwide have included diagonal-braced, K-braced, and toggle-braced damper systems. In recent practical applications in Taiwan, a few new types of installation schemes other than the aforementioned have been adopted for the purposes of increasing the flexibility of space accommodation and/or architectural lighting consideration to meet the requirements of architects and engineers. Therefore, the purpose of this study is to investigate how the appropriateness of the new installation schemes for viscous dampers affects the energy dissipation design for building structures, such as the flexibility of the connected beams and the additional moment caused by damper force. Moreover, the results from a numerical analysis model, a five-story frame adopting the new installation schemes, show that the schemes cannot reach the desired damping ratio. Finally, this study utilized a Single Degree-of-Freedom(SDOF) system model composed of the damper and connected beams in series, and the analysis results explore that the new installation schemes should implement greater numbers of dampers with lower force capacity for each so as to reduce the flexibility effect of the connected beams. Thus, the designed dampers can provide sufficient damping ratio as expected. |
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