確率パラメータを有する波形合成法による大地震時地震動の推定

概要

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A simulation method with fault model to synthesize earthquake ground motions during large earthquakes is presented. The synthesis is accomplished by superposing the element waves due to small events which have the stochastic property determined from the parameter expressing the coherence function such as the coherent components in the low frequency range and the uncorrelated components in the high frequency range. The wave synthesized satisfies the spectral scaling law derived from the omega-square model in the far-field and that is verified through the actual simulation analyses. Next, earthquake ground motions in Tokyo during the Kanto Earthquake in 1923 are simulated using the above mentioned method. From the results it has been found that the peak values and response spectra are almost identical to those of the corrected wave motion of the record observed during the earthquake.
一般社団法人日本建築学会の論文
1992-03-20