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本文是从“受拉空心球体与管焊接处的破坏”为基点，进一步研究球体、钢管杆件、焊缝三为一体的极限受力分析；采用极限状态计算理论导出了网架焊接球节点承载力计算公式。与“网架规程”ＪＧＪ７－９１中公式算得的值和试验值都基本接近。
This article is based on the “destruction of tensioned hollow spheres and pipe joints” as a starting point, further study of the ultimate force analysis of the sphere, the steel pipe members and the weld joint as a whole; the limit state calculation theory is used to derive the load of the welded joints of the grid frame. Force calculation formula. The values calculated by the formulas in the “Framework Specification” JGJ7-91 are basically similar to the experimental values.