Aseismic safety analysis of a prestressed concrete containment vessel for CPR1000 nuclear power plant

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• 作者：Ping Yi ; Qingkang Wang ; Xianjing Kong
• 关键词：nuclear power plant ; prestressed concrete containment vessel ; aseismic safety analysis
• 刊名：Earthquake Engineering and Engineering Vibration
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：16
• 期：1
• 页码：55-67
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Geotechnical Engineering & Applied Earth Sciences; Civil Engineering; Vibration, Dynamical Systems, Control;
• 出版者：Institute of Engineering Mechanics, China Earthquake Administration
• ISSN：1993-503X
• 卷排序：16

文摘

The containment vessel of a nuclear power plant is the last barrier to prevent nuclear reactor radiation. Aseismic safety analysis is the key to appropriate containment vessel design. A prestressed concrete containment vessel (PCCV) model with a semi-infinite elastic foundation and practical arrangement of tendons has been established to analyze the aseismic ability of the CPR1000 PCCV structure under seismic loads and internal pressure. A method to model the prestressing tendon and its interaction with concrete was proposed and the axial force of the prestressing tendons showed that the simulation was reasonable and accurate. The numerical results show that for the concrete structure, the location of the cylinder wall bottom around the equipment hatch and near the ring beam are critical locations with large principal stress. The concrete cracks occurred at the bottom of the PCCV cylinder wall under the peak earthquake motion of 0.50 g, however the PCCV was still basically in an elastic state. Furthermore, the concrete cracks occurred around the equipment hatch under the design internal pressure of 0.4MPa, but the steel liner was still in the elastic stage and its leak-proof function soundness was verified. The results provide the basis for analysis and design of containment vessels.