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主要分析根据不同设计规范对长期均匀力作用下柱壳表面计算结果的差异:尽管柱形壳破坏与外部线荷载作用下环形壳的屈曲破坏看起都是一样的,但是设计规范给出了与环形壳相比显偏小的柱形壳屈曲荷载设计值。欧洲规范3(E1993-1-6)指出了这种情况,并且已经通过数值究确认。研究结果与试验研究进行对比,为长期受外部压力的柱形壳提出设计建议。通过一系列验对计算结果进行验证,试验为提出柱形壳的改评测方法提供了依据。
This paper mainly analyzes the differences of the calculation results of the cylindrical shell surface under long-term uniform forces according to different design codes. Although the damage of the cylindrical shell and the buckling failure of the circular shell under external line load all look the same, Cylindrical shell is significantly smaller than the cylindrical shell buckling load design value. This has been pointed out by Eurocode 3 (E1993-1-6) and has been confirmed numerically. The results of the study are compared with those of the experimental study, and the design suggestions for the cylindrical shell subjected to external pressure for a long time are proposed. Through a series of tests to verify the calculation results, the test provides a basis for the proposed re-evaluation of cylindrical shell.