采动区输电塔线体系在不同方向地表水平变形下的抗变形性能研究

贾建军; 刘春葵; 节连彬; 舒前进; 仲崇硕; 袁广林

doi:10.13204/j.gyjzG21041302

采动区输电塔线体系在不同方向地表水平变形下的抗变形性能研究

doi: 10.13204/j.gyjzG21041302

1. 国网阳泉供电公司, 山西阳泉 045000;
2. 中国矿业大学, 江苏徐州 221116

基金项目:

国网山西省电力公司科技项目（SGSXYQ00XTJS2000155）。

详细信息

作者简介:
贾建军,男,1982年出生,工程师。

通讯作者:
舒前进,男,博士,副教授,shu-qianjin@cumt.edu.cn。

计量
- 文章访问数: 119
- HTML全文浏览量: 13
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2021-04-13
- 网络出版日期: 2021-11-11

STUDY ON ANTI-GROUND-DEFORMATION CAPACITY OF TRANSMISSION TOWER LINE SYSTEMS IN MINING AREAS IN DIFFERENT DIRECTIONS SUBJECTED TO HORIZONTAL GROUND DEFORMATION

1. State Grid Yangquan Power Supply Company, Yangquan 045000, China;
2. China University of Mining and Technology, Xuzhou 221116, China

摘要

摘要: 为了评估煤矿采动导致的水平地表变形对输电线路的安全威胁，以220 kV线路中的输电塔线体系为研究对象，运用有限元软件ANSYS，建立了输电塔线体系的有限元模型，考虑水平地表变形的类型、方向，分析铁塔杆件受力的变化规律，揭示铁塔的破坏模式与地表水平变形的相关关系。研究表明：在水平地表变形下，铁塔以第一横隔支撑面附近的交叉斜杆、横隔材等杆件的屈曲为主要的破坏标志；地表水平变形的方向对铁塔的破坏模式和抗变形能力都有显著的影响；与顺线路方向和垂直线路方向的水平地表变形相比，当水平地表变形沿着斜方向作用时，铁塔的抗地表变能力明显降低，且当夹角为45°时达到最小。
- 采动区 /
- 输电塔线体系 /
- 地表变形 /
- 有限元模拟 /
- 抗变形能力
Abstract: To evaluate the threat of horizontal surface deformation caused by mining to the safety of transmission lines, a typical 220 kV transmission tower line system was taken as the research object and its finite element model was constructed by ANSYS. Considering the types of horizontal surface deformation, and directions, the change laws of forces in the tower members were analyzed, and the relations of the failure mode of the tower and the earth's surface horizontal deformation were revealed. The results showed that the buckling of the cross braces and horizontal braces in or near the first diaphragm-bracing plane was the main failure sign of the tower subjected to horizontal surface deformation. The directions of the horizontal ground deformation had a significant impact on the failure modes and deformation resistance of the tower. Compared with the horizontal ground deformation along the line or perpendicular to the line, when the horizontal ground deformation occured at an oblique angle to the line, the anti-ground-deformation capacity of the tower was significantly reduced, and the minimum capacity was at an oblique angle of 45 degrees.
- mining area /
- transmission tower line system /
- surface deformation /
- FEA /
- deformation resistance

HTML全文

参考文献(12)

[1]	王秀格, 乔兰, 孙歆硕. 地下采空区上输电塔基稳定性的数值模拟[J]. 金属矿山, 2008(3):110-113.
[2]	李逢春, 郭广礼, 邓喀中. 开采沉陷对架空输电线路影响预测方法及其应用[J]. 矿业安全与环保, 2002, 29(2):18-20.
[3]	袁广林, 刘涛, 张先扬, 等. 复合地表变形对输电铁塔内力和变形的影响分析[J]. 建筑科学, 2009, 25(9):14-17.
[4]	袁广林, 陈建稳, 杨庚宇, 等. 动态地表变形对输电铁塔内力和变形的影响[J]. 河海大学学报(自然科学版), 2010, 38(3):284-289.
[5]	YUAN G L, SHU Q J, ZHANG Y F, et al. Model Experiment on Anti-Deformation Performance of a Self-Supporting Transmission Tower in a Subsidence Area[J]. International Journal of Mining Science and Technology, 2012, 22(1):57-61.
[6]	袁广林, 张云飞, 陈建稳, 等. 塌陷区输电铁塔的可靠性评估[J]. 电网技术, 2010, 34(1):214-218.
[7]	袁广林, 舒前进, 张云飞. 超高压输电线路沉陷区输电铁塔安全性评价[J]. 电力建设, 2011, 32(1):18-21.
[8]	SHU Q J, YUAN G L, GUO G L, et al. Limits to Foundation Displacement of an Extra High Voltage Transmission Tower in a Mining Subsidence Area[J]. International Journal of Mining Science and Technology, 2012, 22(1):13-18.
[9]	SHU Q J, YUAN G L, ZHANG Y F, et al. Research on Anti-Foundation-Displacement Performance and Reliability Assessment of 500 kV Transmission Tower in Mining Subsidence Area[J]. Open Civil Engineering Journal, 2011(5):87.
[10]	SHU Q J, YUAN G L, HUANG Z H, et al. The Behaviour of The Power Transmission Tower Subjected to Horizontal Support's Movements[J]. Engineering Structures, 2016, 123:166-180.
[11]	FU X, LI H N. Dynamic Analysis of Transmission Tower-Line System Subjected to Wind and Rain Loads[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2016, 157:95-103.
[12]	中华人民共和国国家能源局.架空输电线路运行规程:DL/T 741-2019[S]. 北京:中国电子出版社, 2019.