Effect of damping force restriction and buffer spring of viscous mass damper in base-isolated buildings

Shigeki Nakaminami, Hidenori Kida, Kohju Ikago, Norio Inoue

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we propose installing a buffer spring into a base-isolated system incorporated with a viscous mass damper as a method to reduce excessive acceleration induced by the secondary mass. We derived transfer functions of a two-degree-of freedom model on the basis of equivalent linearization method using complex stiffness model and the effectiveness of this system was examined by non-linear time history response analysis for real buildings. These results confirmed that the buffer spring as well as the damper force restriction is effective in reduction of accelerations and damper forces without deterioration in displacement reduction effect brought by the secondary mass.

Original languageEnglish
Pages (from-to)1055-1064
Number of pages10
JournalJournal of Structural and Construction Engineering
Volume79
Issue number701
DOIs
Publication statusPublished - 2014 Jul 1

Keywords

  • Base-isolated buildings
  • Buffer spring
  • Damper force restrictionmechanism
  • Rotary inertial mass
  • Two-degree-of freedom model
  • Viscous mass damper

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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