Seismic displacement control of baseisolated structures using complex stiffness model

Koju Ikago, Norio Inoue

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Study on frequency transfer characteristics of a displacement-dependent damper modeled by complex stiffness shows that it has advantage in reduction of base shear and maximum response acceleration of the superstructure of a base-isolated building compared with a conventional velocity-dependent damper such as an oil damper. To realize a displacement-dependent damper, a simple control rule to simulate the complex damping model for active or semi-active dampers is proposed.

Original languageEnglish
Pages (from-to)1653-1660
Number of pages8
JournalJournal of Structural and Construction Engineering
Issue number655
Publication statusPublished - 2010 Sep 1


  • Complex damping
  • Displacement-dependent damper
  • Hilbert transform
  • Magneto-rheological fluid damper
  • Pseudo-complex-damping control rule

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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