论文部分内容阅读
半球形穹顶、两根扶壁柱预应力混凝土安全壳是我国第三代一百万千瓦CNP1000先进核电厂的标志建筑物。为研究CNP1000核电厂安全壳的抗震安全,对安全壳1∶10模型结构进行了非线性有限元分析。非线性时程分析得到的结果与拟动力试验实测结果吻合较好,验证了所采用的计算模型和计算参数基本合理;静力非线性有限元分析结果表明,模型结构的静力极限水平力达到6670kN,为峰值加速度3g地震作用下最大水平剪力的4.55倍。CNP1000核电厂安全壳实体结构具有足够大的抗震安全储备。
Hemispherical dome, two buttress prestressed concrete containment is China’s third generation one million kilowatts CNP1000 advanced nuclear power plant logo buildings. In order to study the seismic safety of containment containment in CNP1000 nuclear power plant, a nonlinear finite element analysis of 1:10 containment containment structure was carried out. The results obtained by nonlinear time history analysis are in good agreement with the measured results of the pseudo-dynamic test, and the calculation models and calculation parameters used are verified to be reasonable. The results of the static nonlinear finite element analysis show that the static ultimate level of the model structure reaches 6670kN, which is 4.55 times of the maximum horizontal shear force under the action of 3g peak acceleration. CNP1000 nuclear power plant containment solid structure has a large enough seismic safety reserve.