大型浮顶油罐应力测试及数值模拟

10×10^4m^3浮顶油罐是我国目前广泛采用的大型储油设施，为获得关键部位的应力分布情况，并检验设计的合理性和运行的安全性，对其进行现场充水应力测试并进行有限元模拟计算。采用电测法，将振弦式应变计与电阻应变片结合使用。测试结果表明：罐体在水深为20．2m工况下达到最大工作应力，最大环向应力出现在罐壁3^#板上部和4^#板下部，测试值与模拟计算值基本一致。按分析设计标准对油罐进行评定，结果表明：该油罐设计合理，在正常操作条件下应力水平完全满足强度要求。测试方法及结果可为今后10×10^4m^3及更大体积油罐的设计和测试提供参考。（表3，图6，参13）

Stress test and numerical simulation of large-scale floating roof oil tank

Fu Donghui1, Liu Fa＇an2, Yang Zhiyu3, Li Xl.lan1 1 .Department of Mechanics, College of Mechanical Engineering, Tianjin University, Tianjin, 300072; 2. PetroChina Engineering Huabei Company, Renqiu, Hebei, 062552; 3. Tianjin Construction Engineering Main Contracting Company Limited, Tianjin, 300072 Capacity at 10×10^4m^3 floating roof oil tank is a kind of large-scale oil storage device used widely in China. To obtain stress distribution in key positions and check design rationality and operation safety, the field water filling stress test and finite element simulation calculation are carded out. The electrometric method is used through the combination of vibrating wire strain gauge and resistance strain gauge. As shown fi＇om the test results, the tank body reaches the maximum working pressure at the depth of 20.2 m, maximum circumferential stress occurs on the No.3 plate and below the No.4 plate of tank wall and testing value is basically consistent with the simulated calculation value. The oil tank is evaluated based on analysis design standard to show the oil tank is reasonably designed and its stress level can fully meet strength requirements under normal operating conditions. Testing methods and results can provide a reference to the design and testing of future 10×10^4m^3and larger oil tanks. （3 Tables, 6 Figures, 13 References）