考虑盆地效应的设定地震的地震动估计方法--以北京地区为例

摘要

利用前人研究盆地放大系数的计算结果，根据确定性危险性分析方法计算了考虑土层和盆地放大效应设定地震产生的加速度，并与地震区划50年超越概率2％加速度结果进行了对比，发现盆地效应对设定地震产生的加速度影响较大。在今后的城市综合防御和地震安全性评价相关工作中考虑盆地效应。%By using calculating results of basin amplifications of preceding studying , the ground motions through amplifications of surface soil and basin of scenario earthquake are calculated based on methods of certain seismic hazard analysis. These results and those ground motions of seismic zonation is contrasted , It is found that the basin effects on the ground motions of these scenario earthquakes are great. Basin effects must be considered in the integrated defense and seismic safety of big city in China.