Taking an actual large tank construction project as example, the circumferential strains of ring wall of foundation was calculated using specification method, differential method and non-linear method respectively. The results showed that strains and reinforce obtained by different methods were relevant. Further study showed that by numerical analysis method calculation the storage tank diameter affected the circumferential strains of ring wall of foundation, but it was not as regular as specification formula.%以某大型储油罐实际工程为例，分别采用三种规范中的简化法，以及差分法、非线性分析法计算基础环墙的环向拉力，发现各种计算方法得到的环向拉力和配筋结果相差较大，而差分法和非线性分析法所得的结果相近。经进一步研究，在三种规范的简化计算方法中均考虑了储油罐直径的影响，而采用由数值分析法的计算表明，虽然储油罐直径对环向拉力有影响，但当储油罐直径超过某一值时，对环向拉力的影响并不像三种简化法公式那样成正比。
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