极端地震下惯容器-弹簧-阻尼装置对隔震结构减震效果研究

Translated title of the contribution: Effectiveness of an inerter-spring-damper device in the seismic response control of a isolated structure under extreme earthquakes

Cholap Chong, Koju Ikago, Yongshan Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

This paper considers the use of an inerter-spring-damper (ISD) device to suppress excessive seismic responses of seismic isolated structures subjected to extreme earthquakes. The ISD consists of an inerter, a device that exerts forces proportional to the relative acceleration of its two ends, coupled with a series springs and dampers. The ISD is a device that can utilize amplified apparent mass and tuning effects. Based on the fixed-points theory, we derived closed-form expressions for optimal ISD tuning parameters for harmonically excited single-degree-of-freedom primary systems. The performance of the ISD was compared to the linear viscous damper (LVD) located at the isolation story, a 6 story seismic isolated structure was presented as an example, and the design of ISD optimum parameters was determined by optimum tuning formulae. The performance of the isolated structure containing an ISD and LVD device subjected to extreme earthquakes were investigated. The results show that utilizing the optimum ISD can result in an improvement in the seismic performance in comparison to the LVD.

Translated title of the contributionEffectiveness of an inerter-spring-damper device in the seismic response control of a isolated structure under extreme earthquakes
Original languageChinese
Pages (from-to)112-117
Number of pages6
JournalZhendong yu Chongji/Journal of Vibration and Shock
Volume38
Issue number12
DOIs
Publication statusPublished - 2019 Jun 28

Keywords

  • Extreme earthquakes
  • Fixed-points theory
  • Inerter
  • Optimum parameters
  • Seismic isolated structure

ASJC Scopus subject areas

  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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