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ASSESSMENT OF SPATIAL PROPERTY VARIABILITY OF THE SUBSURFACE IN SSI STUDIES OF THE ARMENIAN NUCLEAR POWER PLANT

机译:亚美尼亚核电站SSI研究地下空间性质变异评估

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This paper addresses issues surrounding soil property variability including uncertainties associated with "best estimate" values and searches for practical ways to assess the impact on the seismic response of a facility, such as a nuclear power plant, resting on it. Specifically, it attempts, using a parametric study, to formulate a probabilistic model that enables the enveloping of uncertainties associated with the soil-structure-interaction component of the seismic problem. The effects of most-likely sources of uncertainty, such as variability of "distinct" soil layer profile and variability of controlling soil properties, are to be addressed by generating a probabilistic profile in which randomization of key parameters that appear to have the most impact on the results of deterministic analyses is implemented. The use of stochastic finite elements and the introduction of correlation functions, in conjunction with finite element discretization of the foundation soil, are explored as means of achieving an enveloped structural response. The on-going evaluation of the Armenian nuclear plant site prompted this study. In order to stress the importance and relevance of the stated goal, the soil-structure-interaction of the nuclear power plant, subject to significant variation of the foundation soil, is examined. The conflicting results of two independent studies of the subsurface provide the basis for the variation range used in this study.
机译:本文解决了围绕土壤性质变异性的问题,包括与“最佳估计”价值相关的不确定性,并寻求实际的方法来评估对核电厂等设施的地震反应的影响,如核电站休息。具体而言,它尝试使用参数研究来制定概率模型,该模型使得能够包围与地震问题的土壤结构相互作用组分相关的不确定性。最可能的不确定性来源的影响,例如“不同”的土壤层轮廓和控制土壤属性的可变性,可以通过产生概率的简档来解决,其中似乎对似乎影响最大的关键参数随机化确定了确定性分析的结果。随机有限元和相关函数的使用与基础土壤的有限元离散化相结合,探讨了实现包络结构应答的手段。亚美尼亚核植物网站的正在进行的评估促进了这项研究。为了强调规定的目标的重要性和相关性,研究了核电站的土壤结构相互作用,受到基础土壤的显着变化的影响。地下两个独立研究的矛盾结果为本研究中使用的变异范围提供了基础。

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