NEHRP Clearinghouse
- Title
- Studies on High-Frequency Vibrations of Buildings. I: The Column Effects.
- File
- PB80158553.pdf
- Author(s)
- Lubliner, J.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., August 1979, 32 p.
- Identifying Number(s)
- UCB/EERC-79/21
- Abstract
- It is shown that, when column mass is taken into account in the vibration of buildings, the system acquires additional degrees of freedom. If column mass is small compared to floor mass, then the modes obtained from conventional analysis persist virtually unchanged; the additional modes involve almost exclusively column motion, the characteristic frequencies being in the low audio range. The nature of the modes, as well as the transmission of ground motion, depend on whether the columns in adjacent stories are tuned to each other.
- Keywords
- Framed structures; Vibrational spectra; Columns (Supports); Vibration; Degrees of freedom; Buildings; Earthquake engineering; Resonant frequency; Earthquakes; Dynamic structural analysis