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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

36卷

期数:

2019年04期

页码:

71-79

栏目:

出版日期:

2019-07-25

文章信息/Info

Title:

Failure Analysis of Transmission Line Subjected to Wind Loading and Monitoring Scheme

文章编号:

1673-2049(2019)04-0071-09

作者:

肖 凯¹,付 兴²,雷 旭¹,汪 佳²,谢文平¹,李宏男²,聂 铭¹

(1. 广东电网有限责任公司电力科学研究院,广东 广州 510080; 2. 大连理工大学 建设工程学部,辽宁 大连 116024)

Author(s):

XIAO Kai¹, FU Xing², LEI Xu¹, WANG Jia², XIE Wen-ping¹, LI Hong-nan², NIE Ming¹

(1. Electric Power Research Institute of Guangdong Power Grid Co. Ltd., Guangzhou 510080, Guangdong, China; 2. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China)

关键词:

输电塔线体系;  失效机制;  非线性静力分析;  健康监测

Keywords:

transmission tower-line system;  failure mechanism;  nonlinear static analysis;  health monitoring

分类号:

TU347

DOI:

-

文献标志码:

A

摘要:

为研究输电线路的抗风性能及现场监测方案,利用ANSYS软件对整个耐张段的抗风承载力进行了模拟。以广东省2条正在运营的输电线路为工程背景,建立了2条耐张段输电线路有限元模型。对模型施加风荷载并不断调整风速,完成了非线性静力倒塌分析,进而研究了规范中提到的潜在最不利风攻角的影响; 根据应力云图和振型等信息对应变及加速度传感器的布置方案进行了设计; 通过对实测的加速度数据进行分析,得到了32^#塔2个水平方向的前2阶频率。结果表明:121^#～129^#耐张段中124^#塔首先发生破坏,最不利风攻角为90°,临界倒塌风速为34.91 m·s^-1,与设计风速35 m·s^-1非常接近; 30^#～34^#耐张段最先失效的铁塔为32^#塔,最不利风攻角为60°,临界倒塌风速为45.6 m·s^-1,大于其设计风速35 m·s^-1,这是因为设计时采用的是双分裂导线,而实际工程采用单根导线; 实测结果与有限元仿真结果两者的相对误差小于10%,说明了监测数据的可靠性; 铁塔首先进入屈服的位置一般为变坡处上下连接主材、塔身横隔上方连接主材和塔腿主材,并且主材应力较大区域往往与主材截面规格变化处相吻合,因此这些位置在设计和监测时需要加以重视。

Abstract:

In order to study the wind resistance performance of transmission lines and on-site monitoring scheme, the wind resistance capacity of the whole tension section was simulated by ANSYS software. Based on the engineering background of two practical transmission lines in Guangdong Province, the finite element models of two tension-resistant sections were established. By applying wind loads on the model and continuously adjusting the wind speed, the non-linear static collapse analysis was completed, and the influence of the potential worst wind attack angle mentioned in the code was studied. Based on the information of stress nephogram and mode shape, the layout scheme of strain and acceleration sensor was designed. Through analyzing the measured acceleration data, the first two order frequencies of 32^# tower in two horizontal directions were obtained. The results show that 124^# tower in tension section 121^# -129^# was damaged firstly. The most isadvantageous attack angle was 90°. The critical collapse wind speed was 34.91 m·s^-1, which was very close to the design wind speed of 35 m·s^-1. 32^# tower is the first failure tower in tension section 30^#-34^#, and the most disadvantageous wind attack angle is 60°, as well as the critical collapse wind speed is 45.6 m·s^-1, which is larger than the designed wind speed of 35 m·s^-1. This is because the double split conductor is used in the design, while the single conductor is used in the actual project. The relative error between the measured results and the finite element simulation results is less than 10%, which shows the reliability of the monitoring data. The connection main material up and down the changing slope, connection main material above tower body diaphragm and main material of tower legs are the firstly yielded members of tower. The areas where the stress of the main material is larger often coincide with the changes of the cross-section specifications of the main material. Therefore, attention should be paid to these locations in the design and monitoring of the main material.

参考文献/References:

[1] 李宏男,李 雪,李 钢,等.覆冰输电塔-线体系风致动力响应分析[J].防灾减灾工程学报,2008,28(2):127-134.
LI Hong-nan,LI Xue,LI Gang,et al.Wind-induced Dynamic Response Analysis of Iced Transmission Tower-line System[J].Journal of Disaster Prevention and Mitigation Engineering,2008,28(2):127-134.
[2]张卓群,李宏男,李士锋,等.输电塔-线体系灾变分析与安全评估综述[J].土木工程学报,2016,49(12):75-88.
ZHANG Zhuo-qun,LI Hong-nan,LI Shi-feng,et al.Disaster Analysis and Safety Assessment on Transmission Tower-line System:An Overview[J].China Civil Engineering Journal,2016,49(12):75-88.
[3]李宏男,白海峰.高压输电塔-线体系抗灾研究的现状与发展趋势[J].土木工程学报,2007,40(2):39-46.
LI Hong-nan,BAI Hai-feng.State-of-the-art Review on Studies of Disaster Resistance of High-voltage Transmission Tower-line Systems[J].China Civil Engineering Journal,2007,40(2):39-46.
[4]OZONO S,MAEDA J.In-plane Dynamic Interaction Between a Tower and Conductors at Lower Frequencies[J].Engineering Structures,1992,14(4):210-216.
[5]梁枢果,邹良浩,赵 林,等.格构式塔架三维动力风荷载的风洞试验研究[J].空气动力学学报,2007,25(3):311-318,329.
LIANG Shu-guo,ZOU Liang-hao,ZHAO Lin,et al.The Investigation of 3-D Dynamic Wind Loads on Lattice Towers by Wind Tunnel Test[J].Acta Aerodynamica Sinica,2007,25(3):311-318,329.
[6]OKAMURA T,OHKUMA T,HONGO E,et al.Wind Response Analysis of a Transmission Tower in a Mountainous Area[J].Journal of Wind Engineering and Industrial Aerodynamics,2003,91(1/2):53-63.
[7]ALBERMANI F G A,KITIPORNCHAI S.Numerical Simulation of Structural Behavior of Transmission Towers[J].Thin-walled Structures,2003,41(2/3):167-177.
[8]王锦文.强风作用下输电线塔结构塑性疲劳破坏机理研究[D].武汉:武汉理工大学,2008.
WANG Jin-wen.Research on Plastic Fatigue Damage Mechanism of Transmission Tower Under Strong Wind Excitations[D].Wuhan:Wuhan University of Technology,2008.
[9]孟令星,俞琪琦,曾玉洁,等.考虑导线影响的风致输电塔倒塌模拟[J].低温建筑技术,2016(7):81-84.
MENG Ling-xing,YU Qi-qi,ZENG Yu-jie,et al.Transmission Wires Influenced Collapse Analyses of Transmission Tower System Subjected to Wind Load[J].Low Temperature Architecture Technology,2016(7):81-84.
[10]汪 江,杜晓峰,田万军,等.500 kV大跨越输电塔振动在线监测与模态分析系统[J].电网技术,2010,34(10):180-184.
WANG Jiang,DU Xiao-feng,TIAN Wan-jun,et al.Online Vibration Monitoring and Modal Analysis System of 500 kV Long-span Power Transmission Tower[J].Power System Technology,2010,34(10):180-184.
[11]曹海林,杨力生,尹 朋,等.基于智能天线的超高输电塔变形监测技术[J].电力自动化设备,2010,30(5):38-41.
CAO Hai-lin,YANG Li-sheng,YIN Peng,et al.Deformation Monitoring Technique Based on Smart Antenna for Ultra-high Tower of Power Transmission Line[J].Electric Power Automation Equipment,2010,30(5):38-41.
[12]林友新,周 翠,李宏男,等.单元模态应变能法在输电铁塔损伤识别中的应用[J].防灾减灾工程学报,2013,33(1):102-107.
LIN You-xin,ZHOU Cui,LI Hong-nan,et al.Application of Element Modal Strain Energy Method in Damage Identification of Transmission Tower[J].Journal of Disaster Prevention and Mitigation Engineering,2013,33(1):102-107.
[13]楼文娟,林宝龙.基于小波变换的大型输电铁塔损伤位置识别[J].工程力学,2006,23(增1):157-162,168.
LOU Wen-juan,LIN Bao-long.Wavelet Transform Based Method for Detecting Damage Location of Electricity Transmission Towers[J].Engineering Mechanics,2006,23(S1):157-162,168.
[14]李宏男,高东伟,伊廷华.土木工程结构健康监测系统的研究状况与进展[J].力学进展,2008,38(2):151-166.
LI Hong-nan,GAO Dong-wei,YI Ting-hua.Advances in Structural Health Monitoring Systems in Civil Engineering[J].Advances in Mechanics,2008,38(2):151-166.
[15]李宏男,杨礼东,任 亮,等.大连市体育馆结构健康监测系统的设计与研发[J].建筑结构学报,2013,34(11):40-49.
LI Hong-nan,YANG Li-dong,REN Liang,et al.Design and Development of Structural Health Monitoring System for the Dalian Stadium[J].Journal of Building Structures,2013,34(11):40-49.
[16]李宏男,田 亮,伊廷华,等.大跨斜拱桥结构健康监测系统的设计与开发[J].振动工程学报,2015,28(4):574-584.
LI Hong-nan,TIAN Liang,YI Ting-hua,et al.Design and Development of Structural Health Monitoring System for Long Span Skew Arch Bridge[J].Journal of Vibration Engineering,2015,28(4):574-584.
[17]DL/T 5092—1999,110～500 kV架空送电线路设计技术规程[S].
DL/T 5092—1999,Technical Code for Designing 110～500 kV Overhead Transmission Line[S].
[18]付 兴.风雨致输电塔线体系动力反应及倒塌分析[D].大连:大连理工大学,2016.
FU Xing.Dynamic Response and Collapse Analyses of Transmission Tower-line System Subjected to Wind and Rain Loads[D].Dalian:Dalian University of Technology,2016.
[19]张卓群,周 楠,李宏男,等.风荷作用下的输电塔结构倒塌破坏分析[J].价值工程,2016(35):141-142.
ZHANG Zhuo-qun,ZHOU Nan,LI Hong-nan,et al.Analysis on the Collapse of Transmission Tower Structure Under Wind Loads[J].Value Engineering,2016(35):141-142.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2018-10-22
基金项目:国家自然科学基金项目(51708089,51421064); 中国博士后科学基金项目(2019T120207,2017M620101); 中央高校基本科研业务费专项资金项目(DUT19RC(4)021); 中国南方电网有限责任公司科技项目(GDKJQQ20153009)
作者简介:肖 凯(1986-),男,湖南益阳人,工程师,E-mail:xk0606@sina.cn。
通信作者:付 兴(1988-),男,辽宁葫芦岛人,讲师,工学博

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更新日期/Last Update: 2019-07-26