Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Research on the impact effect of AP1000 shield building subjected to large commercial aircraft

  • Wang, Xiuqing (School of Civil Engineering, Guangzhou University) ;
  • Wang, Dayang (School of Civil Engineering, Guangzhou University) ;
  • Zhang, Yongshan (School of Civil Engineering, Guangzhou University) ;
  • Wu, Chenqing (School of Civil Engineering, Guangzhou University)
  • Received : 2020.08.30
  • Accepted : 2020.11.19
  • Published : 2021.05.25
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Abstract

This study addresses the numerical simulation of the shield building of an AP1000 nuclear power plant (NPP) subjected to a large commercial aircraft impact. First, a simplified finite element model (F.E. model) of the large commercial Boeing 737 MAX 8 aircraft is established. The F.E. model of the AP1000 shield building is constructed, which is a reasonably simplified reinforced concrete structure. The effectiveness of both F.E. models is verified by the classical Riera method and the impact test of a 1/7.5 scaled GE-J79 engine model. Then, based on the verified F.E. models, the entire impact process of the aircraft on the shield building is simulated by the missile-target interaction method (coupled method) and by the ANSYS/LS-DYNA software, which is at different initial impact velocities and impact heights. Finally, the laws and characteristics of the aircraft impact force, residual velocity, kinetic energy, concrete damage, axial reinforcement stress, and perforated size are analyzed in detail. The results show that all of them increase with the addition to the initial impact velocity. The first four are not very sensitive to the impact height. The engine impact mainly contributes to the peak impact force, and the peak impact force is six times higher than that in the first stage. With increasing initial impact velocity, the maximum aircraft impact force rises linearly. The range of the tension and pressure of the reinforcement axial stress changes with the impact height. The perforated size increases with increasing impact height. The radial perforation area is almost insensitive to the initial impact velocity and impact height. The research of this study can provide help for engineers in designing AP1000 shield buildings.

Keywords

Acknowledgement

This work is supported by the National Natural Science Foundation of China (51778162, 51878191) and the Natural Science Foundation of Guangdong Province (2020A1515010993, 2015A030313511), which are gratefully acknowledged.

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