虹桥高铁无柱雨棚铸钢节点的有限元分析及试验研究

Experimental Study on Cast-Steel Joints of Hongqiao High-Speed Railway Station

京沪高铁上海虹桥站无柱雨棚钢结构中使用了较多的铸钢节点。从结构的整体安全性出发,深入了解该类节点的受力性能并确保其在设计荷载下的安全性十分必要。对该工程的部分主要铸钢节点进行了精细有限元分析和足尺模型试验研究,了解铸钢节点的应力分布特征和承载能力。通过有限元计算结果和足尺模型试验结果的对比,对有限元模型进行修正,进而计算节点的极限承载能力。最后,根据修正后的有限元模型对铸钢节点进行优化设计,在保证节点安全性的前提下,减缓了节点的应力集中,降低了铸钢节点的重量。

Some cast-steel joints were used in the design of the Hongqiao high-speed railway station.In order to analyze the behavior and the bearing capacity of the cast-steel joints,the refine finite elemental analysis was conducted.Software SolidWorks was selected to calculate the finite elemental models.Then the stress distribution of the cast-steel joints were known,which indicates that the cast-steel joints have comparatively high load bearing ability and are safe enough.The full-scale experiments with well-designed reaction frames were done in the laboratory,which verify the reliability of the results of the refine finite elemental analysis.The optimization designs of the cast-steel joints were also done,and the proposals to reduce the total weight of the cast-steel joints were put forward.