非定常過程における応答倍率値による累積損傷度の評価法について : 第1報,一質点系

概要

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This paper shows that the average and variance of the accumulated damage caused by earthquakes in a piping system are related to the seismic response factor λ. The earthquakes in this paper are of a non-stationary random process. The average is proportional toλ^2 and the variance is toλ^4. The analytical values of the average and variance for a single-degree-of-freedom system are compared with those obtained from computer simulations. Both averages of accumulated damage are approximately equal. The variance obtained from analysis does not coincided with that from simulations. The reason is considered to be the fluctuation in power spectra of input accelerations and a small number of sample data. But increasing the number, the average and variance become approximately equal for both analysis and simulation.
一般社団法人日本機械学会の論文
1988-01-25