The Analysis Of Soil-Structure Interaction And Floor Response Spectrum For Nuclear Reactor Engineering

Because the systems, equipments and components of nuclear engineering contain a lot of radioactive substance. When they are ruined the nuclear leagage would be formed. It is possible that it can cause great environmental disaster. So we must attach importance to the seismic problems in the design and construction of nuclear engineering.The Soil-Structure Interaction Analysis is of great importance to the seismic design and safety analysis of nuclear engineering. Being supported on the soil subgrade, the movement of building foundation will be affected by the Soil-Structure Interaction. That is to say that there are many differences between Free-Field Ground motion and Non-Free-Field Ground motion.So this effect must be considered in the design of nuclear engineering.We had fallen behind with other advanced countrys in the research of Soil-Structure Interaction Analysis of nuclear engineering. We also have a lot of work to do in the fields of Soil-Structure interacting principles,mathematical model for dynamic analysis,nucleaer code understanding,computer program research and calculating for a real program etc.First,the thesis has discussed the principles,basic requirements,models for analysis and methods of analysis,and has mainly analysed the two dimentions Finite- Element model according to our demands.In this model system,the thesis has used the two dementions Finite-Elements for the soil and Lumped-Masses for the structure.The response of the soil-structure system may be calculated in one step.The thesis has introducted the principles and functions of FLUSH program. The testing and operating of this program had been made out based on a good understanding of organization,structure and functions of the FLUSH program. The program had been used to calculate the response of soil-structure interaction of China Reactor engineering.The Floor Response Spectrum (FRS)had been acquired simultaneously. The thesis has compared the outcome of Free-Field Ground Motion with that of Non-Free-Field Ground Motion,and made a conclusion that considering Soil-Structure Interaction to calculate is reasonable.