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

作　　者：王孟[1] 耿景都[2] 苏志钢 王璋奇[1] WANG Meng;GENG Jingdu;SU Zhigang;WANG Zhangqi(School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,China;China Electric Power Research Institute,Beijing 102401,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003 [2]中国电力科学研究院,北京102401

出　　处：《华北电力大学学报（自然科学版）》2020年第5期102-110,共9页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家电网有限公司科技项目(GCB17201800181).

摘　　要：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1000 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。This paper studies the mechanical characteristics of leg member,bracing member,bracing panels and redundant bracing of UHV steel tubular lattice tower under loads.We established a 1000 kV UHV steel tubular doublecircuit tower combining beam element and bar element and analyzed its finite element modeling approaches.We qualitatively analyzed the proposed model under specific loading conditions,obtaining the load-deformation curves under wind condition and combined ice and wind condition,as well as the stresses in typical tower members and displacements of key joints.That the experimental data of the proposed model were in good agreement with the full-scale load test result shows that the beam-bar mixed element modeling of UHV steel tubular tower is effective.

关 键 词：特高压 钢管塔 真型试验 有限元分析 

分 类 号：TM753[电气工程—电力系统及自动化]