中文摘要：

为了研究某新型大吨位（可以承受4500kN拉力、3500kN剪力或者6500kN压力的作用）铸钢万向铰支座在3种工况（拉力最大组合、压力最大组合、剪力最大）组合下的力学性能,通过对现有试验加载装置的加固设计以及自平衡传力装置的设计解决了该新型大吨位铸钢万向铰支座足尺试验的试验加载问题,进行了该新型大吨位铸钢万向铰支座在3种工况下的足尺静力性能试验研究,并与有限元分析结果进行了对比.试验研究表明,所设计支座受力明确、传力直接、性能可靠,支座设计能够满足规程要求,验证了有限元模型的正确性.

英文摘要：

The mechanical performance of a heavy-duty cast steel universal hinged support capable of withstanding 4 500 kN of tension,3 500 kN of shear or 6 500 kN of compression was investigated under three load conditions.These were critical tension,critical compression and critical shear respectively.This innovative loading and selfbalanced transmitting system was designed and fabricated by updating the available loading ring in a lab.Full-scale experiments in all three load cases were carried out successfully.Tests results showed the support has reasonable design and manufacturing details,a direct force path,reliable performance,and the support as designed satisfies the requirements of the Chinese code.The three tests also verified the theoretical model of the finite element analysis,further confirming the applicability of the model.