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对5个管板连接构件进行了受压极限承载力试验研究和非线性有限元分析。试验表明,未补强的试件GPC-1,GPC-3和用钢板补强的试件GPC-4,GPC-5的破坏模式均为试件的整体失稳,用焊接空心球补强的试件GPC-2的破坏模式为钢管的局部屈曲。试验结果与有限元计算结果基本吻合。实际工程中应用管板连接构件作为受压构件时,必须加强构件弱轴的刚度,以避免整体失稳破坏,而采用焊接空心球补强是一种有效的方法。
Five tube-plate connection members were subjected to the ultimate bearing capacity test and nonlinear finite element analysis. The experimental results show that the failure modes of GPC-1, GPC-3 and GPC-4 and GPC-5, which are not reinforced, are the overall instability of the specimens, which are reinforced with welded hollow spheres The failure mode of GPC-2 is local buckling of steel pipe. The experimental results are in good agreement with the finite element results. In the actual project, when the tube-plate connecting member is used as the compression member, the rigidity of the weak axis of the member must be strengthened to avoid the overall instability and damage, and the use of welded hollow ball reinforcement is an effective method.