Seismic response control of a complex structure using multiple MR dampers: Experimental investigation

Jing Chen, You Lin Xu, Weilian Qu, Zhilun Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

This paper presents an experimental investigation on semi-active seismic response control of a multi-story building with a podium structure using multiple magnetorheological (MR) dampers manipulated by a logic control algorithm. The experiments are performed in three phases on a seismic simulator with a slender 12-story building model representing a multi-story building and a relatively stiff 3-story building model typifying a podium structure. The first phase of the investigation is to assess control performance of using three MR dampers to link the 3-story building to the 12-story building, in which seismic responses of the controlled two buildings are compared with those of the two buildings without any connection and with rigid connection. The second phase is to investigate reliability of the semi-active control system and robustness of the logic control algorithm when 2 out of 3 MR dampers fail and when the electricity supply to MR dampers is completely stopped. The last phase is to examine sensitivity of semi-active control performance of two buildings to change in ground excitation. The experimental results show that multiple MR dampers with the logic control algorithm can achieve a significant reduction in seismic responses of both buildings. The proposed semi-active control system is of high reliability and good robustness.
Original languageEnglish
Article number1671-3664(2004)02-0181-13
Pages (from-to)181-193
Number of pages13
JournalEarthquake Engineering and Engineering Vibration
Volume3
Issue number2
Publication statusPublished - 1 Dec 2004

Keywords

  • Complex structure
  • Experimental investigation
  • Logic control
  • Multiple MR dampers
  • Seismic response

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

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