Semi-active control for the seismic response of a tall building with skirt structure

W. L. Qu, J. W. Wang, You Lin Xu, Z. H. Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

This paper presents an analytical method for semi-active control of seismic responses of tall building, whose tower structure and skirt structure are connected to each other with ER/MR dampers. After constructing a rational mechanical model of ER/MR dampers, this paper develops a group of governing equations for semi-active control of structure-damper system. In accordance with the principles of instantaneous optimal active control, an 'Off-On Energy Dissipation' semi-active control algorithm is proposed, which is based upon optimal active control displacement. An earthquake-excited tall building with a 20-story tower structure and a 5-story skirt structure is used to validate the analytical method presented. The results of simulated computation imply that, as a kind of simple and effective intelligent control device, ER/MR dampers can significantly reduce the seismic' whiplash effect' of tall building with skirt structure as well as the seismic responses of whole structure.
Original languageEnglish
Pages (from-to)87-95
Number of pages9
JournalJournal of Earthquake Engineering and Engineering Vibration
Volume20
Issue number4
Publication statusPublished - 1 Dec 2000
Externally publishedYes

Keywords

  • ER/MR dampers
  • Semi-active control

ASJC Scopus subject areas

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

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