Relationships between Average Shear-Wave Velocity and Site Amplification Factors Obtained by Records from Yokohama Dense Strong-Motion Network
Relationships between Average Shear-Wave Velocity and Site Amplification Factors Obtained by Records from Yokohama Dense Strong-Motion Network
复制标题
横滨密集强震网记录获得的平均剪切波速度与站点放大因子之间的关系
DOI：
10.5610/jaee.8.3_19
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
H. Miura
中科院分区：
文献类型：
--
作者：
S. Midorikawa;Makoto Komazawa;H. Miura
利用横滨密集强震台网的强震记录，研究了地面平均横波速度与峰值加速度、峰值速度、地震烈度和反应谱幅值的放大系数之间的关系。在峰值加速度、峰值速度和地震烈度的放大因子方面，小震级地震记录和大震级地震记录的结果有所不同。这是由于小地震和大地震记录的光谱内容不同。峰值加速度、峰值速度和地震烈度的放大因子分别与10m、30m和20 ~ 30m的地面平均横波速度有较高的相关性。较短、中期和较长周期的响应谱振幅放大因子分别与地表10m、20m和30 m的平均横波速度具有较高的相关性。谱幅在较长周期范围内的相关性高于较短周期范围内的相关性。
The relationships between average shear-wave velocity of the ground and the site amplification factor for peak ground acceleration, peak ground velocity, seismic intensity and response spectral amplitudes are examined by using the strong motion records from the Yokohama Dense Strong-Motion Network. Regarding the amplification factors for peak ground acceleration, peak ground velocity and seismic intensity, the results by the records from smaller magnitude earthquakes and from larger magnitude earthquakes are different. This is due to the different spectral contents of the records from smaller and larger earthquakes. The amplification factors for peak ground acceleration, peak ground velocity and seismic intensity show higher correlations with the average shear-wave velocities of the ground down to 10m, 30m and 20 to 30 m, respectively. The amplification factors for response spectral amplitudes for shorter, mid and longer periods show higher correlations with the average shear-wave velocities of the ground down to 10m, 20m and 30 m, respectively. The correlations of the spectral amplitude at longer period range are higher than those at shorter period range.