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

Mebrahtom Gebrekirstos Mezgebo, Eric M Lui

Research output: Contribution to journalArticle

12 Scopus citations

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 languageEnglish (US)
Pages (from-to)131-152
Number of pages22
JournalEarthquake Engineering and Engineering Vibration
Volume16
Issue number1
DOIs
StatePublished - Jan 1 2017

Keywords

  • energy-based seismic design
  • hysteretic energy distribution
  • MDOF systems
  • 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

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