Study on the Physical Measure of Seismic Intensity Based on the Energy Parameters of Earthquake Ground Motion

Abstract eng:
The isoseismal of seismic intensity is plotted based on the seismic damage to buildings for the 9.21 Taiwan Chi-Chi Earthquake. Then the paper calculated the average value of input energy and hysteretic energy of ground motions in each intensity zone. The linear regression between the average value and the seismic intensities based on the least-square method are carried on. The result shows that the two energy parameters correlate very well with the intensity. Since the energy parameters can reflect the damage potential to structures they can serve as the physical measure of seismic intensity. The conclusion drown by this paper is based on the records and damage data of the single Chi-Chi earthquake. So the conclusion is more scientific and authentic in comparison with the results from data of different earthquakes before.

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