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What is the response to the vertical component of earthquake?

April 26, 2017component earthquake Response vertical

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What is the response to the vertical component of earthquake?

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Isolators are stiff in the vertical direction and do not change the vertical seismic response. The vertical component of the earthquake results in axial load variations which can be accommodated in the design of columns and the isolators. Shake table tests have been conducted with and without the vertical component of the earthquake motion. The results indicate that there is very little difference in the performance of the isolators.