考虑时间—空间变化的地震地面运动模拟

Earthquake Ground Motion Simulation from a Time-Spatial Variability Model

采用谱表示法,按不同的场地特性参数,模拟生成平稳与非平稳的随机过程,考虑了地震地面运动的时间—空间变化,计算了不同场地的地震反应谱,并与铁路抗震设计规范进行了比较,对不同的场地用反应谱法进行抗震设计的研究具有重要意义.

Considering the time spatial variability of earthquake ground motion, stationary and non stationary random processes are simulated by means of spectral representation method according to parameters of different site characters. Seismic response spectra of different sites are presented and compared with the spectra of Chinese Aseismic Design Code of Railway Engineering. This work is of importance for the research of aseismic design on different sites by way of response spectral method.