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工程力学  2013 

Q690钢管塔柔性法兰极限承载力试验研究及有限元分析

DOI: 10.6052/j.issn.1000-4750.2011.09.0643, PP. 206-0

Keywords: 钢管塔,柔性法兰,节点,试验,极限承载力

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Abstract:

该文研究了Q690高强钢管塔柔性法兰极限承载力。为考察这种法兰的受力性能、破坏模式及螺栓的应力分布，以1000kV钢管塔上的连接法兰为背景，进行了2个法兰足尺试件试验。同时，对试验模型进行了非线性有限元数值分析。试验与有限元分析结果表明：所设计的高强钢柔性法兰受力合理，满足工程应用；节点的薄弱部位位于主材与法兰板连接处；对于高强钢法兰螺栓受力修正系数可适当减小，建议取0.62；同时建议考虑钢管壁厚对节点承载力的影响。

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