Abstract An H-beam welded hollow spherical joint is a new kind of spatial grid structure. In this study, the eccentric-loaded behavior of H-beam welded hollow spherical joints was studied, and the influential law of material strength, joint size, and stiffening rib on its mechanical properties was analyzed through experimental research and numerical simulation. Parametric analyses were conducted to study the eccentric-loaded behavior of H-beam welded hollow spherical joints subjected to pure bending or the combined action of axial force and bending moment using a finite element model verified through experiments. The calculation formula of the bending bearing capacity of the joints and the axial force-bending moment curve were also obtained. Finally, the design rule for eccentric compression was proposed and verified through test results.

中文翻译：

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H型钢焊接空心球偏心受压极限承载性能

摘要 H型钢焊接空心球接头是一种新型的空间网格结构。本研究对H型钢焊接空心球形接头的偏心载荷行为进行了研究，通过试验研究和数值模拟分析了材料强度、接头尺寸、加强筋对其力学性能的影响规律。采用经实验验证的有限元模型，进行参数分析，研究H型钢焊接空心球接头在纯弯曲或轴力和弯矩联合作用下的偏心载荷行为。还得到了节点抗弯承载力的计算公式和轴向力-弯矩曲线。最后，提出了偏心压缩的设计规则，并通过试验结果进行了验证。