A design method of a base isolated system for detached houses using variable oil dampers

Masataka Nemoto, Koju Ikago, Masahiro Ikenaga, Nono Inoue

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, we propose a design method to contral the displacemeiit of base-isolation layer using an oil damper that can change its damping coefficient relative to the displacement. The present damping rovides largc damping to reduce Lhe responsce displacement of the base-isolation layer in severe or extreme seismic events, where it prnvides small damping to reduce the response acceleration of the superstructure in moderate seismic events. A numeical optimization method. sequential quadratic progranning is employed to obtain an otimum set of parameters for the present. damper. Design examplesshaw that the base-isolatiot system with oil optimallydesigned vaiable oil damper satisfy the design ciiciia iat canit be satisfied with a system incoroiating a conventionaI oil damper.

Original languageEnglish
Pages (from-to)291-299
Number of pages9
JournalJournal of Structural and Construction Engineering
Volume76
Issue number660
DOIs
Publication statusPublished - 2011 Dec 1

Keywords

  • Displacement cantrol
  • Passive contro
  • Seismic isolation
  • Variable oil damper

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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