We experimented on welded hollow spherical joint of a stadium steel roof to investigate the stress and strain distributions on the surface of the joint and determine the ultimate bearing capacity. Then, finite element...We experimented on welded hollow spherical joint of a stadium steel roof to investigate the stress and strain distributions on the surface of the joint and determine the ultimate bearing capacity. Then, finite element analysis was made to experimental results. When the test load was 140% of the design load, the stress at the bottom of the fourth wimble pipe reached the yield point. The experimental results agree with the analytical results well.展开更多
通过对某体育中心屋盖拱形桁架支座的焊接空心球节点的足尺模型试验,获得了该节点的应力应变分布情况和极限承载力.为了探讨理论设计方法,采用AN SY S有限元分析软件,采用she ll143壳单元建模,同时考虑几何和材料双重非线性进行有限元分...通过对某体育中心屋盖拱形桁架支座的焊接空心球节点的足尺模型试验,获得了该节点的应力应变分布情况和极限承载力.为了探讨理论设计方法,采用AN SY S有限元分析软件,采用she ll143壳单元建模,同时考虑几何和材料双重非线性进行有限元分析.结合试验结果和有限元分析结果,验证有限元模型和分析方法的合理性,并对球节点的受力性能和承载力进行评价,同时为复杂节点设计提供参考.展开更多
基金The National Natural Science Foundation of China (No.50778077)
文摘We experimented on welded hollow spherical joint of a stadium steel roof to investigate the stress and strain distributions on the surface of the joint and determine the ultimate bearing capacity. Then, finite element analysis was made to experimental results. When the test load was 140% of the design load, the stress at the bottom of the fourth wimble pipe reached the yield point. The experimental results agree with the analytical results well.
文摘通过对某体育中心屋盖拱形桁架支座的焊接空心球节点的足尺模型试验,获得了该节点的应力应变分布情况和极限承载力.为了探讨理论设计方法,采用AN SY S有限元分析软件,采用she ll143壳单元建模,同时考虑几何和材料双重非线性进行有限元分析.结合试验结果和有限元分析结果,验证有限元模型和分析方法的合理性,并对球节点的受力性能和承载力进行评价,同时为复杂节点设计提供参考.