A new methodology for energy-based seismic design of steel moment frames

• Published in: Earthquake Engineering and Engineering Vibration 2017, Vol.16 (1), p.131-152
• Main Authors: Mezgebo, Mebrahtom Gebrekirstos, Lui, Eric M.
• Format: Article
• Language: English
• Subjects: Civil Engineering; Control; Design; Design engineering; Dynamical Systems; Earth and Environmental Science; Earth Sciences; Earthquakes; EBSD; Electron back scatter diffraction; Energy demand; Estimates; Frames; Geotechnical Engineering & Applied Earth Sciences; Hysteresis; MDOF; Plasticity; Seismic activity; Seismic design; Seismic engineering; Seismic phenomena; Steel; Steel frames; Vibration; 分配方案; 应用程序; 抗震设计方法; 能量需求; 设计程序; 钢框架
• ISSN: 1671-3664; 1993-503X
• DOI: 10.1007/s11803-017-0373-1

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.