Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Experimental investigation and design method of the general anchorage zone in the ring beam of prestressed concrete containment vessels

  • Chang Wu (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Tao Chen (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Yanli Su (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Tianyun Lan (Shenzhen China Nuclear Power Engineering Design Co., Ltd) ;
  • Shaoping Meng (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University)
  • Received : 2023.07.03
  • Accepted : 2023.10.18
  • Published : 2024.02.25
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Abstract

Ring beam is the main anchorage zone of the tendons in the nuclear power prestressed concrete containment vessel (PCCV). Its safety is crucial and has a great influence on the overall performance of PCCV. In this paper, two half-scale ring beams were tested to investigate the mechanical performance of the anchorage zone in the PCCV under multidirectional pressure. The effect of working condition with different tension sequences was investigated. Additionally, a half axisymmetric plane model of the containment was established by the finite element simulation to further predict the experimental responses and propose the local reinforcement design in the anchorage zone of the ring beam. The results showed that the ultimate load of the specimens under both working conditions was greater than the nominal ultimate tensile force. The original reinforcement design could meet the bearing capacity requirements, but there was still room for optimization. The ring beam was generally under pressure in the anchorage area, while the splitting force appeared in the under-anchor area, and the spalling force appeared in the corner area of the tooth block, which could be targeted for local strengthening design.

Keywords

Acknowledgement

The research presented in this paper were sponsored by the National Key Research and Development Program of China (Grants Number: 2022YFC3801800), the National Natural Science Foundation of China (Grants Number: 52108119), the Fundamental Research Funds for the Central Universities (Grants Number: 2242023k30059), and the Natural Science Foundation of Jiangsu Province (Grants Number: BK20200376).

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