Abstract
A procedure is proposed whereby input and hysteretic energy spectra developed for single-degree-of-freedom (SDOF) systems are applied to multi-degree-of-freedom (MDOF) steel moment resisting frames. The proposed procedure is verified using four frames, viz., frame with three-, five-, seven- and nine-stories, each of which is subjected to the fault-normal and fault-parallel components of three actual earthquakes. A very good estimate for the three- and five-story frames, and a reasonably acceptable estimate for the seven-, and nine-story frames, have been obtained. A method for distributing the hysteretic energy over the frame height is also proposed. This distribution scheme allows for the determination of the energy demand component of a proposed energy-based seismic design (EBSD) procedure for each story. To address the capacity component of EBSD, a story-wise optimization design procedure is developed by utilizing the energy dissipating capacity from plastic hinge formation/rotation for these moment frames. The proposed EBSD procedure is demonstrated in the design of a three-story one-bay steel moment frame.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 131-152 |
| Number of pages | 22 |
| Journal | Earthquake Engineering and Engineering Vibration |
| Volume | 16 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2017 |
Keywords
- MDOF systems
- energy-based seismic design
- hysteretic energy distribution
- steel moment frames
- story-wise optimization design
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Geotechnical Engineering and Engineering Geology
- Mechanical Engineering