Seismic vibration control of building structures with multiple tuned mass damper floors integrated

Ping Xiang, Akira Nishitani

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Floor isolation system (FIS) achieving very small floor accelerations has been used to ensure human comfortability or protect important equipments in buildings. Tuned mass damper (TMD) with large mass ratios has been demonstrated to be robust with respect to the changes in structural properties. This paper presents the concept of a TMD floor vibration control system, which takes advantages of both the FIS and TMD. Such a system is called 'TMD floor system' herein. The TMD floor system (TMDFS) in which building floors serve as TMDs can achieve large mass ratio without additional masses. Furthermore, multiple TMD floors installed in a building can control multimode vibrations. Then, an optimal design process, where the objective function is set as the maximum magnitude of the frequency response functions of inter-storey drifts, is proposed to determine the TMD floor parameters. Additionally, the multimode approach is applied to determine the optimal locations of TMD floors if not all of the floors in a building can serve as TMDs. In addition to the numerical simulations, a scaled model shaking table experiment is also conducted. Both the numerical and experimental results show that the absolute accelerations of the TMD floors are smaller than those of the main structural storeys, which indicates the TMDFS maintains the merit of FIS while greatly reducing seismic responses of main structures.

Original languageEnglish
Pages (from-to)909-925
Number of pages17
JournalEarthquake Engineering and Structural Dynamics
Volume43
Issue number6
DOIs
Publication statusPublished - 2014 May

Keywords

  • Floor isolation system
  • Multimode approach
  • Optimum design
  • TMD floor system
  • Tuned mass damper

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

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