Physical random function model of ground motions for engineering purposes
作者： Ding Wang , Jie Li
DOI: 10.1007/S11431-010-4201-3
关键词: Random variable 、 Field (physics) 、 Engineering 、 Ground motion 、 Sample (statistics) 、 Seismic wave 、 Fourier transform 、 Electronic engineering 、 Path (graph theory) 、 Mathematical analysis 、 Random function
摘要: A physical random function model of ground motions for engineering purposes is presented with verification sample level. Firstly, we derive the Fourier spectral transfer form solution to definition problem, which describes one-dimensional seismic wave field. Then based on special models source, path and local site, obtained whose parameters are variables. The superposition method narrow-band harmonic groups improved synthesize motion samples. Finally, an application this simulate records in 1995 Kobe earthquake described. resulting accelerograms have frequency-domain non-stationary characteristics that full agreement realistic records.
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