摘要
利用三维交错网格有限差分技术和随机过程两种方法,对同一场地模拟强震地面运动,比较和分析两者得到的加速度时程曲线及反应谱之间的差异.结果表明,前者模拟的地震波低频成分比较多,后者高频成分较多;而且三维交错网格有限差分的模拟结果,能够较好地反映盆地放大效应.
Strong ground motion of an earthquake is simulated by using both 3D staggeredgrid finite difference and stochastic method respectively. The acceleration time histories obtained from the both ways and their response spectrums are compared. The result demonstrates that the former is available to simulate the low-frequency seismic wave, the latter is available to simulate the high-frequency seismic wave. Moreover, the obtained result from FDM can better reflect the amplification effect of basin.
出处
《地震学报》
CSCD
北大核心
2005年第5期543-550,共8页
Acta Seismologica Sinica
基金
国家自然科学基金项目(5048003)
德国慕尼黑大学DAAD联合资助.
关键词
交错网格
有限差分
随机过程
地震波模拟
staggered-grid
finite difference
stochastic
simulating seismic wave
