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Effects of Damper Force Ranges and Ground Motion Pulse Periods on the Performance of Semi-Active Isolation Systems

[+] Author Affiliations
Henri Gavin, Julie Thurston

Duke University, Durham, NC

Chicahiro Minowa

National Institute for Earth Sciences and Disaster Prevention, Tsukuba, Japan

Hideo Fujitani

Building Research Institute, Tsukuba, Japan

Paper No. PVP2003-1819, pp. 79-85; 7 pages
doi:10.1115/PVP2003-1819
From:
  • ASME 2003 Pressure Vessels and Piping Conference
  • Problems Involving Thermal Hydraulics, Liquid Sloshing, and Extreme Loads on Structures
  • Cleveland, Ohio, USA, July 20–24, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-1695-8
  • Copyright © 2003 by ASME

abstract

A large-scale base-isolated steel structural frame was tested at the shaking table laboratory of the National Research Institute for Earth Sciences and Disaster Prevention. These collaborative experiments featured auto-adaptive media and devices to enhance the performance of passive base isolation systems. The planning of these experiments involved determining appropriate device control methods, the development of a controllable damping device with fail-safe characteristics, and the evaluation of the performance of the controlled isolation system subjected to strong ground motion with pronounced near-field effects. The results of the planning study and their large-scale experimental confirmation provide guidelines for the development and implementation of auto-adaptive damping devices for full scale structures.

Copyright © 2003 by ASME
Topics: Force , Motion , Dampers

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