| With oil preservation being built in our country, many crude oil storage tanks are needed. However, the design and construction technology of large oil storage tank is quite immature, it is necessary to improve the design and construction technologyof large oil storage tank.With the API 650 and JIS B 8501 Standard, theory analysis and finite elementcalculation were conducted to design and optimize the model of 15×10~4m~3 , 20×10~4m~3. The research works of the thesis mainly include:(1) A new method based on a combined cylindrical shell theory and another new method which takes foundation-settlement as the boundary-condition in finite element analysis were introduced. Stress test of a 15×10~4 m oil storage tank were conducted, the test data of which were compared with the values of theory calculation and finite element analysis. The results showed that new methods introduced had much higher accuracy than existing ones.(2) The structural design of 15×10~4m~3 oil storage tank was did with API 650 and JIS B 8501 Standard. Combining the first 15×10~4 m~3 oil storage tank of our country, the stress analysis of oil storage tanks were conducted by new methods to determine the basic model of 15×10~4m~3 oil storage tank.(3) The structural design of 20×10~4m~3 oil storage tank was did. First, the effect of structural parameters on tank was analyzed to define optimal structural parameters;then the structural design of 20×10~4 m~3 oil storage tank was did with API 650 Standard, the stress analysis of oil storage tanks were conducted by new methods to determine the basic model of 20×10~4m~3 oil storage tank.
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