Heavy damping mechanism sometimes incorporated in vibration control technologies and, particularly, in base isolation devices, may be considered a valuable source of suppressing vibrations thus enhancing a building's seismic performance. However, for the very pliant systems such as base isolated structures, with a relatively low bearing stiffness but with an high damping, the so-called "damping force" may turn out the main pushing force at a strong earthquake . This finding created a theoretical ground in earthquake engineering for a damping-disengaged base isolation technology called Earthquake protector .
A shake-table video of concurrent shake-table experiments with two identical and kinematically equivalent to their 12-story prototype building models is presented at . The right model is resting on Earthquake Protectors, while the left one, caught at the time of its crash, is fixed to the shake-table platen.
Analytical software[edit | edit source]
Analytical software called EPET or Earthquake Performance Evaluation Tool enables concurrent virtual experiments on the same building models with any sliding type of base isolation, including Earthquake protector, and without.
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See also[edit | edit source]
References[edit | edit source]
- Valentin Shustov (2010), "Testing of a New Line of Seismic Base Isolators," https://nees.org/resources/770
- Base Isolation: Promise, Design & Performance
- SGER: Testing of a New Line of Seismic Base Isolators
- Earthquake Protector: Shake Table Crash Testing