The result of numerical calculation shows that the capacity of bearing the load is enhanced extremely by changing the geometrical shape of the shell and its material distribution.

数值计算结果表明，通过改变圆柱状壳体的几何形状及其材料分布，可使其承受外压载荷的能力有很大的提高。

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The results show that the initial geometrical imperfection of the structure influences heavily its instability forms, which results in an effect on the ultimate load bearing capacity of the structure.

结果表明，结构的几何缺陷将严重影响结构的失稳形式，从而影响结构的极限承载能力。

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The laws of the ultimate capacity ratio of K-joints and KK joints (namely multiplanar coefficient) varying with the main geometrical parameters were obtained.

研究了KK型节点和K型节点极限承载力之比（即空间作用系数）随节点几何参数的变化规律。

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