| 引用本文: | 黄新波,陈子良,赵隆,朱永灿,徐冠华,司伟杰.110 kV输电线路铁塔塔基沉降应力仿真分析与试验[J].电力自动化设备,2017,37(4): |
| HUANG Xinbo,CHEN Ziliang,ZHAO Long,ZHU Yongcan,XU Guanhua,SI Weijie.Stress simulation and experiment for tower foundation settlement of 110 kV transmission line[J].Electric Power Automation Equipment,2017,37(4): |
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| 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。 |
| 关键词: 输电线路 塔基沉降 ANSYS 最大等效应力 沉降实验 应变监测 |
| DOI：10.16081/j.issn.1006-6047.2017.04.023 |
| 分类号:TM72;TM75 |
| 基金项目: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) |
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| Stress simulation and experiment for tower foundation settlement of 110 kV transmission line |
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HUANG Xinbo1, CHEN Ziliang1, ZHAO Long1,2, ZHU Yongcan2, XU Guanhua1, SI Weijie1
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1.College of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China;2.College of Mechanical and Electrical Engineering, Xidian University, Xi’an 710071, China
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| Abstract: |
| A finite element analytical model of 110 kV tower-line system with three towers and two spans is established in ANSYS for analyzing the variation law of the maximum equivalent stress undertaken by the key member bars of tower for different tower foundation settlement conditions. Based on the tower foundation settlement experiment platform for transmission line, the fiber grating demodulator is applied to measure the stress for verifying the simulative results. Results show that, the maximum equivalent stress undertaken by key member bars increases approximately linearly along with the increase of tower foundation settlement; among different tower foundation settlement conditions, the stress undertaken by key member bar exceeds the yield stress foremost in mono-foundation or tri-foundation settlement; under same external load, the displacement limit of lateral settlement is 50 mm and that of longitudinal settlement is 15mm for mono-foundation settlement or 10 mm for tri-foundation settlement. |
| Key words: transmission line tower foundation settlement ANSYS maximum equivalent stress settlement experiment strain monitoring |
