110kV输电线路铁塔塔基沉降应力仿真分析与试验

发布时间：2018-06-05 20:24

本文选题：输电线路 + 塔基沉降　；参考：《电力自动化设备》2017年04期

【摘要】：针对输电线路铁塔塔基沉降问题,利用ANSYS建立110 kV三塔两档-塔线体系有限元分析模型,研究各种沉降组合工况下铁塔关键杆件所承受的最大等效应力随沉降度的变化规律,并基于输电线路铁塔塔基沉降实验平台,采用光纤光栅解调仪测量关键杆件所受应力对仿真结果进行测试验证。结果表明:随着沉降值增大,关键杆件承受的最大等效应力近似呈线性增加;各种沉降组合工况下,发生单个或3个塔基沉降时的关键杆件所受应力最先超过应力屈服临界值;在外荷载相同时,塔基横向沉降位移限值为50 mm,纵向沉降、单个或3个沉降位移限值分别为15 mm、10 mm。
[Abstract]:Aiming at the settlement of tower foundation of transmission line, the finite element analysis model of 110kV three-tower two-stack-tower system is established by using ANSYS, and the law of the maximum equivalent stress withstanding by the key members of the tower with the settlement degree is studied under various settlement combination conditions. Based on the experimental platform of tower foundation settlement of transmission line, the simulation results are tested and verified by using fiber grating demodulator to measure the stress of key bars. The results show that the maximum equivalent stress of the key member increases linearly with the increase of settlement value, and the stress of the key member with single or three tower foundation settlement first exceeds the critical stress yield value under various settlement combination conditions. When the external load is the same, the limit of lateral settlement displacement of tower foundation is 50 mm, and that of longitudinal settlement is 15 mm / 10 mm, and the limit value of single or 3 settlement displacements is 15 mm / 10 mm respectively.
【作者单位】：西安工程大学电子信息学院;西安电子科技大学机电工程学院;
【基金】：国家自然科学基金资助项目(51177115) 陕西省重点科技创新团队计划项目(2014KCT-16) 西安工程大学控制科学与工程重点学科建设经费资助项目(107090811);西安工程大学研究生创新基金资助项目(CX201619)~~
【分类号】：TM753

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