Study on fluid structure interaction model and dynamical response of NPP shield building
Zhao Chunfeng 1,2 Chen Jianyun 3 Wang Jingfeng 1
1. Hefei University of Technology, Hefei 230009, China
2. State Key Laboratory for Geo Mechanics and Deep Underground Engineering, China University of Mining and Technology， Xuzhou 221116, China
3. Dalian University of Technology, Dalian 116024, China
Abstract：The fluid-structure interaction between the water storage tank and water can make the water sloshing, which may provide impulse pressure on the water tank, reduce the dynamic response of the shield building, and then achieve out the seismic reduction of NPP when the structure is subjected to earthquake loading. In this paper, the coupling fine finite element model of AP1000 shield building was established based on the Arbitrary Lagrangian Eulerian ALE algorithm. 8 cases of water levels were designed and dynamic response of water storage tank was investigated when the structure was subjected to El-Centro earthquake which satisfies to RG1.60 spectrum. The interaction rule and mechanism of acceleration and displacement and water height, height of air, height ratio of water level and oscillation frequency of water tank were parametrically analyzed. Finally, the optimal water level for seismic decay was obtained. The numerical results clearly show that a certain water level can effectively reduce the seismic response of NPP under earthquake loading. It is also indicated that the optimal water level is case 3 when the height of water and height ratio are 8.8m and 0.75, respectively, which can reduce seismic response most effectively.
核电厂屏蔽厂房流固耦合模型与动力响应研究[J]. 土木工程学报, 2016, 49(S2): 107-113.
Zhao Chunfeng Chen Jianyun Wang Jingfeng. Study on fluid structure interaction model and dynamical response of NPP shield building. 土木工程学报, 2016, 49(S2): 107-113.
