【摘要】 在核电站安全性评价中,场地地震动反应分析是核安全评价中最重要的工作。拟建四川核电站选址于沉积岩地层。沉积岩场地的共同特点是岩体的不均匀性,即成层性,有不同的倾角,各层有不同的物理力学特性,有不同的风化程度,有的位于盆地中,有的位于盆地边缘。这些特性,使场地地震动反应计算更加困难。因此,要准确评价场地条件对地震动反应的影响,就必须解决如下问题:场地软硬程度对地震加速度的放大特性;沉积岩场地的风化程度对场地地震波的放大特性;在盆地中的沉积岩场地的"盆地效应"对地震波的放大特性;地震波本身的随机性;沉积岩场地的地震动反应分析模型及工程分析计算软件研究。更多还原

【Abstract】 The site seismic response analysis is the most important work in the safety evaluation of nuclear power plant.The proposed Sichuan nuclear power plant is in sedimentary rock strata.The common feature of sedimentary rock strata is the nonuniformity of rock.The strata are characterized by the possesses a different angles,different physical and mechanical characteristics,different weathering degrees,and different lithofacies.These features listed above make the site seismic response analysis more difficult.In order to accurately estimate the strata condition’s influence to the seismic response,we studied the following issues: how the rigidity degree of the strata influence to seismic acceleration amplification characteristics,how the weathering degree of sedimentary rock strata influence to seismic waves amplification characteristics,how "Basin effect" influence seismic waves amplification characteristics,the random characteristics of seismic waves of its own,how to design the model on the site seismic response analysis and engineering analysis software in sedimentary rock strata.更多还原