Welded hollow spherical joints (WHSJ) have been widely used in various space structures. Corrosion of WHSJ is inevitable and will eventually threaten the structural safety. This paper makes an assessment of the accuracy of quality inspection procedures commonly employed by spatial grid structure to calculate the failure pressure of corroded WHSJ via finite element analyses (FEA). Second, this paper studies the influence of the corrosion depth, corrosion pattern, groove height, joint size and other parameters on the bearing capacity of WHSJ also via FEA. Analytical procedures to calculate the failure pressure associated grooving corrosion are not available yet. Thus, based on the parametric analysis results, such a procedure is devised and proposed here. Results indicated that the wall thickness loss and the diameter ratio were the main factors affecting the ultimate compressive performances of WHSJ; the volume loss of WHSJ outside the "critical latitude of groove" had nothing to do with the compressive performances; the influence of corrosion on the ultimate compressive performances was independent of the diameter and thickness of WHSJ. The derived result would lay a foundation for the prediction and evaluation of the residual bearing capacity of space grid structures with WHSJ.

焊接空心球形接头（WHSJ）已广泛用于各种空间结构。WHSJ的腐蚀是不可避免的，最终会威胁到结构安全。本文对空间网格结构通过有限元分析（FEA）计算腐蚀的WHSJ的破坏压力常用的质量检查程序的准确性进行了评估。其次，本文还通过有限元分析研究了腐蚀深度，腐蚀方式，槽高，接缝尺寸等参数对WHSJ轴承承载力的影响。还没有用于计算与开槽腐蚀相关的破坏压力的分析程序。因此，基于参数分析结果，这里设计并提出了这样的程序。结果表明，壁厚的损失和直径比是影响WHSJ极限抗压性能的主要因素。WHSJ在“临界临界纬度”以外的体积损失与压缩性能无关。腐蚀对最终压缩性能的影响与WHSJ的直径和厚度无关。所得结果将为WHSJ对空间网格结构剩余承载力的预测和评估奠定基础。