（1 同济大学土木工程学院， 上海 200092； 2 中国中元国际工程公司， 北京 100089）

[摘要] 为考察神农大剧院某复杂焊接鼓型节点在最不利工况下的应力分布及受力性态，对该节点进行了足尺试验和有限元数值分析。结果表明此节点在2倍设计荷载下未破坏；采用ABAQUS有限元分析，认为该节点最终发生杆件破坏；对圆杆垂直贯于鼓平面类似T型的节点进行研究，得到了此类节点的承载力公式以及其内部有十字加劲板时的加劲效率，结果表明内置十字加劲肋可以有效提高节点承载力，据此给出设计建议。

[关键词] 鼓型节点；足尺试验；有限元分析；破坏模式；承载力公式

中图分类号：TU392.3           文献标识码：A         文章编号：14S1093

作者简介：申浩，硕士研究生，Email：shenhao511@gmail.com。

Experimental study on the welded drum-type steel tubular joint of the Shennong Grand Theatre

Shen Hao ，Zhao Xianzhong ，Wang Wenyuan

(1 College of Civil Engineering，Tongji University， Shanghai200092，China； 2 China IPPR International Engineering Corporation， Beijing 100089，China)

Abstract：Full-scale experimental and FEM study on the truncated joint of the Shennong Grand Theatre has been carried out. The results indicated that the ultimate capacity of the joint was larger than twice the design load. The FEM analysis was carried out by ABAQUS, and the FEM results agreed well with the experimental results. The FEM analysis indicated that the member failure happened in the end. The bearing capacity and the stiffening efficiency of the simplified joint have also gotten through the FEM analysis. The results showed that the cross stiffener improved the capacity of the joint. A recommendation was given to improve the capacity.

Keywords：truncated joints; full-scale experiment; FEM analysis; failure mode; bearing capacity

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