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本文提出了计算倒四角锥平板空间网架的变分—迭代法。将网架的联立线性代数方程组看作是泊松(Poisson,S.D.)方程的差分方程。取泊松方程的变分解作为初值,然后以迭代法迭代1～3轮即可获得足够精度的计算结果。与直接求解线性代数方程组的方法相比可以较多地简化计算工作。
This paper proposes a variational-iterative method for calculating the inverted quadrangular flat space network. The simultaneous linear algebraic equations of the grid are regarded as the difference equations of the Poisson (S.D.) equation. Take the variable decomposition of the Poisson equation as an initial value, and then iteratively iterate through 1 to 3 rounds to obtain a sufficiently accurate calculation. Compared with the direct solution of linear algebraic equations, the computational work can be simplified.