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火电厂主厂房具有质量、刚度分布不均等特点,为了保证电厂运行功能在罕遇地震下不中断,避免重大设备损坏而造成的严重财产损失和人员伤亡,结构抗震性能的研究尤为重要。本文采用有限元软件ABAQUS考察结构在大震作用下的抗震性能,研究各部件进入塑性阶段的顺序、损伤程度和分布,并在此基础上提出对结构方案的意见和建议。分析结果表明:结构最大层间位移角满足1/100的限值要求,结构满足大震不倒的设防要求,分析结果可为设计和工程应用提供一定的依据。
The main plant of thermal power plant is characterized by unequal distribution of stiffness and stiffness. In order to ensure that the operation of power plant is not interrupted under rare earthquakes and avoid serious property damage and casualties caused by major equipment damage, the research on seismic performance of structures is particularly important. In this paper, the ABAQUS finite element software was used to study the seismic behavior of the structure under the action of a large earthquake. The order, degree and distribution of the parts entering the plastic phase were studied. Based on the above, the opinions and suggestions on the structure scheme were proposed. The analysis results show that the maximum displacement angle of the structure satisfies the limit of 1/100, and the structure meets the requirements for fortification of large earthquakes. The analysis results can provide some basis for design and engineering application.