Computers and Concrete

  • 제14권2호
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  • Pages.127-143
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  • 2014
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Mechanical analysis for prestressed concrete containment vessels under loss of coolant accident

  • Zhou, Zhen (Southeast University, Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education) ;
  • Wu, Chang (Southeast University, Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education) ;
  • Meng, Shao-ping (Southeast University, Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education) ;
  • Wu, Jing (Southeast University, Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education)
  • 투고 : 2012.08.10
  • 심사 : 2014.05.27
  • 발행 : 2014.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

LOCA (Loss Of Coolant Accident) is one of the most important utmost accidents for Prestressed Concrete Containment Vessel (PCCV) due to its coupled effect of high temperature and inner pressure. In this paper, heat conduction analysis is used to obtain the LOCA temperature distribution of PCCV. Then the elastic internal force of PCCV under LOCA temperature is analyzed by using both simplified theoretical method and FEM (finite element methods) method. Considering the coupled effect of LOCA temperature, a nonlinear elasto-plasitic analysis is conducted for PCCV under utmost internal pressure considering three failure criteria. Results show that the LOCA temperature distribution is strongly nonlinear along the shell thickness at the early time; the moment result of simplified analysis is well coincident with the one of numerical analysis at weak constraint area; while in the strong constrained area, the value of moments and membrane forces fluctuate dramatically; the simplified and numerical analysis both show that the maximum moment occurs at 6hrs after LOCA.; the strain of PCCV under LOCA temperature is larger than the one of no temperature under elasto-plastic analysis; the LOCA temperature of 6hrs has the greatest influence on the ultimate bearing capacity with 8.43% decrease for failure criteria 1 and 2.65% decrease for failure criteria 3.

키워드

참고문헌

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피인용 문헌

  1. Analytical evaluation of the dome-cylinder interface of nuclear concrete containment subjected to internal pressure and thermal load vol.161, 2018, https://doi.org/10.1016/j.engstruct.2018.01.063
  2. Nonlinear analysis of pre-stressed concrete containment vessel (PCCV) using the damage plasticity model vol.298, 2016, https://doi.org/10.1016/j.nucengdes.2015.12.019
  3. Ultimate internal pressure of Prestressed Concrete Containment Vessel analyzed by an integral constitutive model vol.21, pp.6, 2017, https://doi.org/10.1007/s12205-016-1027-y
  4. Mechanical Properties of Prestressed Concrete Members with Inclined Tendon Configuration Subjected to Uniaxial and Biaxial Loading pp.2191-4281, 2018, https://doi.org/10.1007/s13369-018-3318-8
  5. A numerical-experimental evaluation of beams composed of a steel frame with welded and conventional stirrups vol.22, pp.1, 2014, https://doi.org/10.12989/cac.2018.22.1.027
  6. Nonlinear Finite Element Analysis of Prestressed Concrete Containment Vessel under Severe Accident Loads vol.24, pp.3, 2020, https://doi.org/10.1007/s12205-020-0603-3