Smart Structures and Systems

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Functionally upgraded passive devices for seismic response reduction

  • Chen, Genda (Center for Infrastructure Engineering Studies, Missouri University of Science and Technology (formerly University of Missouri-Rolla)) ;
  • Lu, Lyan-Ywan (Department of Construction Engineering, National Kaohsiung First University of Science & Technology)
  • Received : 2007.07.13
  • Accepted : 2008.04.29
  • Published : 2008.11.25
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Abstract

The research field of structural control has evolved from the development of passive devices since 1970s, through the intensive investigation on active systems in 1980s, to the recent studies of semi-active control systems in 1990s. Currently semi-active control is considered most promising in civil engineering applications. However, actual implementation of semi-active devices is still limited due mainly to their system maintenance and associated long-term reliability as a result of power requirement. In this paper, the concept of functionally upgraded passive devices is introduced to streamline some of the state-of-the-art researches and guide the development of new passive devices that can mimic the function of their corresponding semi-active control devices for various applications. The general characteristics of this special group of passive devices are discussed and representative examples are summarized. Their superior performances are illustrated with cyclic and shake table tests of two example devices: mass-variable tuned liquid damper and friction-pendulum bearing with a variable sliding surface curvature.

Keywords

References

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