A comparative analysis is presented of the influence of the rheological characteristics of concrete on the stress strain state of NPP containment shells. It is based on creep and shrinkage tests performed on concrete, field observations, and calculations of the strains and stresses engendered in the reinforcement and concrete by the shrinkage and creep of concrete. The results showed discrepancies in the obtained data. For this reason, it is recommended that field data and detailed working models, in which the cross-section parameter and the pitch of the reinforcement rods correspond to the nominal values, be used in evaluating the stress-strain state of NPP containment under operational and accidental loads.

中文翻译：

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混凝土流变特性对核电厂安全壳应力应变状态的影响

比较分析了混凝土流变特性对核电厂安全壳应力应变状态的影响。它基于对混凝土进行的徐变和收缩试验、现场观察以及混凝土收缩和徐变在钢筋和混凝土中产生的应变和应力的计算。结果表明所获得的数据存在差异。为此，建议使用现场数据和详细的工作模型，其中钢筋的横截面参数和节距与标称值相对应，用于评估运行和运行条件下核电厂安全壳的应力应变状态。意外负载。