The Foundation Liquefaction and Permanent Deformation Analysis of Diversion Dike for Nuclear Power Plant

2011 ◽  
Vol 90-93 ◽  
pp. 1865-1869 ◽  
Author(s):  
Jie Zhao ◽  
Yang Zheng ◽  
Gui Xuan Wang
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Dynamic Analysis ◽  
Effective Stress ◽  
Nuclear Power ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Permanent Deformation ◽  
Deformation Analysis ◽  
Response Analysis

In seismic response analysis, total stress method is adopted mostly, but variation of the pore water pressure and the development process of the liquefaction are not considered in this method. Based on the dynamic analysis of two-dimensional effective stress proposed by Zhu-jiang Shen, combined with dynamic consolidation theory of Biot, the foundation liquefaction analysis of the diversion dike for nuclear power plant is performed by using effective stress dynamic analysis program, the liquefied range is given, as well as the permanent deformation. The obtained law can provide theoretical guidance for the similar project.

Seismic Response Analysis of Reactor Coolant Pump in Nuclear Power Plant

2008 ◽  
Author(s):  
Zhaohui Ren ◽  
Hui Ma ◽  
He Li ◽  
Guiqiu Song ◽  
Wenjian Zhou
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Structural Design ◽  
Nuclear Power ◽  
Response Spectrum ◽  
Response Analysis ◽  
Response Spectrum Analysis ◽  
Coolant Pump ◽  
Reactor Coolant ◽  
Modes Of Vibration

The reactor coolant pump in nuclear power plant is the only revolving equipment in the nuclear power plant. Its functional stability will directly affect the security of nuclear power plant. The coolant pump of a very nuclear plant is examined by using response spectrum analysis to analysis dynamic characteristics and responses aiming at finding the natural frequencies of vibration, modes of vibration and seismic responses, and any possible step which may cause damage of the whole system. The favorable spectrum and unfavorable one are investigated as well. The paper focuses on avoiding the detrimental effects caused by earthquakes, therefore may lay down a theoretical foundation for structural design and installation.

scholarly journals Structural Monitoring and Response Analysis of Prestressed Concrete Primary Containment of a Nuclear Power Plant

2014 ◽  
Vol 86 ◽  
pp. 554-559
Author(s):  
Y.T. Praveenchandra ◽  
Raghupati Roy ◽  
N. Madhusudana Rao ◽  
Arvind Shrivastava
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Prestressed Concrete ◽  
Nuclear Power ◽  
Structural Monitoring ◽  
Response Analysis

Integrated Blast Resistance Model of Nuclear Power Plant Auxiliary Facilities

2017 ◽  
Vol 3 (3) ◽  
Author(s):  
Irad Brandys ◽  
David Ornai ◽  
Yigal Ronen
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Blast Resistance ◽  
Cruise Missile ◽  
Response Analysis ◽  
Control Room ◽  
Structural Dynamic ◽  
Resistance Model ◽  
Ground Shock

Standards, guidelines, manuals, and researches refer mainly to the required protection of a nuclear power plant (NPP) containment structure (where the reactor's vessel is located) against different internal and external extreme events. However, there is no consideration regarding the man-made extreme event of external explosion resulting from air bomb or cruise missile. A novel integrated blast resistance model (IBRM) of NPP's reinforced concrete (RC) auxiliary facilities due to an external above ground explosion based on two components is suggested. The first is structural dynamic response analysis to the positive phase of an external explosion based on the single degree-of-freedom (SDOF) method combined with spalling and breaching empirical correlations. The second is in-structure shock analysis, resulting from direct-induced ground shock and air-induced ground shock. As a case study, the resistance of Westinghouse commercial NPP AP1000 control room, including a representative equipment, to an external above ground blast loading of Scud B-100 missile at various standoff distances ranging from 250 m (far range) till contact, was analyzed. The structure's damage level is based on its front wall supports' angle of rotation and the ductility ratio (dynamic versus elastic midspan displacement ratio). Due to the lack of specific structural damage demands and equipment's dynamic capacities, common protective structures standards and manuals are used while requiring that no spalling or breaching shall occur in the control room while it remains in the elastic regime. The engineering systems and equipments' spectral motions should be less than their capacity. The integrated blast resistance model (IBRM) of the structure and its equipment may be used in wider researches concerning other NPP's auxiliary facilities and systems based upon their specifications.

Seismic Analysis of Intake Tunnel for Nuclear Power Plant

2011 ◽  
Vol 243-249 ◽  
pp. 3513-3517
Author(s):  
Jie Zhao ◽  
Yang Zheng ◽  
Gui Xuan Wang
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Time Domain ◽  
Nuclear Power ◽  
Seismic Analysis ◽  
Time Domain Analysis ◽  
Internal Force ◽  
Response Analysis ◽  
Plant Structure ◽  
Seismic Response Analysis

Aiming at the nuclear power plant structure and adopting time domain analysis approach, the seismic analysis of an intake tunnel for nuclear power plant is performed with FLAC3D in this paper. Contraposing the characters of the field rock of the nuclear plant, the internal force distribution of the tunnel under different wall rocks is researched and analysed, and the envelope diagram of inner force in the lining of the tunnel is drawn. The obtained law can provide the basis for the seismic response analysis of tunnels.

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