文章研究了中国东部地区基岩地震动衰减关系与基岩加速度反应谱.①对比分析了美国西部地区烈度衰减关系,选取了合理的衰减关系.②根据美国NGA强地震动观测数据库得到的美国西部地区的基岩地震动衰减关系和中国东部地区烈度衰减关系,确定了中国东部地区基岩地震动衰减关系.③研究了临沂地区的基岩加速度反应谱.提出的中国东部地区基岩地震动衰减关系,可以生成东部任意场点的基岩加速度反应谱.生成的临沂地区基岩加速度反应谱可为该地区地震动分析提供依据.
The ground motion attenuation relationship in eastern China and the acceleration response spectra are studied in this paper.Firstly,the comparison of intensity attenuation relationships in western America is made and the reasonable relationship is selected.Then,according to the attenuation relationship of western America based on the NGA database and the intensity attenuation relationships of eastern China,the attenuation relation-ships in the east of China are determined.Lastly,the acceleration response spectra at base rock are generated in Linyi area.Based on the attenuation relationship,the acceleration response spectra can be generated at arbitrary sites.The acceleration response spectra obtained provide a basis for seismic analysis in Linyi area.