Integrated Design of Steel Frames and Added Damper Using Energy- Based Method (Technical Note)

A. Keyhani, Marzie Shahini

Research output: Contribution to journalArticle

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Abstract

Energy-based methods for structural damage detection have been widely investigated in the last decade. In this paper, the energy balance concept used in these methods is proposed for integrated design of the steel frames equipped with added damper. The proposed procedure is based on the assumption that all of input energy is dissipated by added damper and plastic work done by structural elements (beams and columns). The required damping coefficient and cross sectional area of elements are determined by equating the total dissipated energy (energy capacity) to the input energy (energy demand) such that the target displacement does not exceed maximum displacement and uniform drift is reached. The total dissipated energy (energy capacity) is considered to be the sum of the energy dissipated by added damper and the hysteretic energy damped out by plastic work in structural elements. The proposed method is evaluated by numerical simulations. The method is applied for integrated design of two moment frames with added dampers. In both cases, push over analysis for behavior of the frames indicate that while the structural elements are reduced in size (compared to conventional design), the designed frames with added dampers have a good performance by developing plastic hinges in all beams.
Original languageEnglish
Pages (from-to)923-930
Number of pages8
JournalAsian Journal of Civil Engineering
Volume15
Issue number6
Publication statusPublished - 2014

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Plastics
Steel
Damage detection
Hinges
Energy balance
Damping
Computer simulation

Keywords

  • integrated design
  • steel frame
  • added damper
  • energy-based method

Cite this

Integrated Design of Steel Frames and Added Damper Using Energy- Based Method (Technical Note). / Keyhani, A.; Shahini, Marzie.

In: Asian Journal of Civil Engineering, Vol. 15, No. 6, 2014, p. 923-930.

Research output: Contribution to journalArticle

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