钢管塔结构强度的有限元分析及试验研究Finite Element Analysis and Experimental Study on Strength of Steel Tubular Tower
王孟;耿景都;苏志钢;王璋奇;
摘要(Abstract):
研究了特高压钢管塔的主材、斜材、横隔材及辅助材等的受力特点,将特高压钢管塔简化成桁梁混合有限元建模,分析了钢管塔结构有限元建模原则和方法。建立了某1 000 kV特高压钢管塔的桁梁混合有限元模型,通过施加特定载荷工况,验证了所建有限元模型的合理性。分析计算了大风工况、覆冰组合工况等典型加载工况下的钢管塔载荷-变形规律,得到特高压钢管塔关键受力塔材的应力及重要节点的位移等随试验加载的变化规律,并将模型的计算结果与该塔的真型塔实验结果进行了对比分析。结果表明,所建立的特高压钢管塔的桁梁混合模型是有效的,模型计算结果和真型塔的实验结果符合很好。
关键词(KeyWords): 特高压;钢管塔;真型试验;有限元分析
基金项目(Foundation): 国家电网有限公司科技项目(GCB17201800181)
作者(Author): 王孟;耿景都;苏志钢;王璋奇;
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