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介绍了储罐标准规范GB 50341、JIS B 8501、BS EN 14015及API 650的罐壁厚度计算公式;比较分析了4个标准规范在罐壁厚度计算公式、罐壁钢板许用应力、罐壁焊接接头系数方面的差异。通过比较分析发现,除了许用应力、焊接接头系数不同外,罐壁计算厚度的设计液位高度也不一样,对设计液位高度的不同理解是引起罐壁厚度差异的主要原因。分析结果表明:采用GB 50341与采用其他储罐标准规范中罐壁厚度计算公式确定的罐壁厚度是一致的。为使罐壁计算厚度与国际标准规范相同,给出了许用应力的确定原则,同时重新定义了设计液位高度。通过实例证明,许用应力的确定原则是合理可靠的。
The calculation formulas of tank wall thickness of storage tank standard specifications GB 50341, JIS B 8501, BS EN 14015 and API 650 are introduced. The calculation formulas of tank wall thickness, allowable stress of tank wall plate and tank wall are compared and analyzed in four standard specifications Differences in joint coefficients. Through comparative analysis, it is found that in addition to the allowable stress and the different weld joint coefficients, the design liquid level height of the tank wall is different. The different understanding of the design liquid level is the main reason that causes the difference of tank wall thickness. The analysis results show that the thickness of the tank wall determined by adopting the formula of GB 50341 and adopting the tank wall thickness in other storage tank standards is consistent. In order to make the calculated thickness of the tank wall the same as the international standard, the principle of determining the allowable stress is given, and the design liquid level is redefined at the same time. It is proved by examples that the principle of determining allowable stress is reasonable and reliable.