A New Construction and Erection Technique for Transmission Towers Based on Finite Element Model and Computer Vision
-
摘要: 以国网江苏省电力有限公司500 kV凤城—梅里长江大跨越工程输电高塔施工为背景,研究提出了一套基于有限元模拟与计算机视觉的输电高塔组立施工新技术。首先根据吊装构件特点、安装位置等制定合理的吊装与安装工艺流程,再建立关键施工阶段铁塔与抱杆的耦合有限元模型,在铁塔与抱杆结构上布置实测监测系统采集风环境和结构状态的多元信息,保障施工安全开展。为解决抱杆高空作业位移测量难度大的问题,研发了一种高空结构物相对位移的计算机视觉位移测量方法。采用有限元模拟结构整体受力变形状态,结合计算机视觉技术对施工动态过程开展结构变形和位移测量,提出了输电高塔组立安全高效施工新技术。Abstract: With the background of the construction of the transmission tower crossing the Yangtze River of Jiangsu Fengcheng-Meili 500 kV line, a set of construction and erection techniques for transmission towers based on finite element simulation and field measurement was proposed. First of all, according to the characteristics of lifting components, installation location, etc., a reasonable lifting and installation process was developed, and then a coupled finite element model of the tower and the crane in the key construction stages was established, the real measurement system was installed on the tower and crane structure to collect the dynamic information of the wind environment and the structure state, so as to ensure that the construction could be carried out safely. A computer vision displacement measurement method of relative displacement of overhead structures was developed to solve the problem of difficult displacement measurement of crane at high altitude. The finite element model was used to simulate the overall state of the structure, the computer vision method was used to measure the deformation and dynamic displacement of the structure, a new safe and high-efficienly technique for construction and erection of transmission towers was proposed.
-
Key words:
- transmission tower /
- crane structure /
- construction technology /
- finite element /
- computer vision
-
[1] 黄铭枫,魏歆蕊,叶何凯,等. 大跨越钢管塔双平臂抱杆的风致响应[J]. 浙江大学学报,2021,55(2): 1351-1360. [2] 沈国辉,余杭聪,余亮,等.大跨越输电塔的发展现状[J].施工技术(中英文),2021,50(13):103-107. [3] 刘遥. 汉江大跨越输电塔动态安全评估方法研究[D].重庆:重庆大学,2009. [4] 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. [5] 陈志辉.±500 kV同塔双回直流线路铁塔组立工艺[J].电力建设,2012,33(1):105-108. [6] 利小兵,张耀,宋洋,等.超高压输电线路大跨越利用座地双平臂抱杆组立钢管高塔施工技术[J].广东电力,2011,24(6):42-46. [7] 徐奋,李轶群.座地旋转双摇臂抱杆组立特高压酒杯型铁塔[J].华东电力,2014,42(9):1845-1851. [8] 谭雷,黄成云,王力争,等.绳索对落地双摇臂抱杆力学性能的影响[J].工程与建设,2015,29(3):411-413. [9] 丁仕洪,周焕林,叶建云,等.某大跨越高塔抱杆的非线性有限元静力分析[J].特种结构,2011,28(3):46-49. [10] 高正平,黄士君,黄凤华,等.超高大跨越输电铁塔高空构件吊装施工安全风速[J].南京工业大学学报(自然科学版),2019,41(2):206-211. [11] 黄明祥.内悬浮内拉线抱杆安全监控系统研制[J].电力安全技术,2021,23(4):36-41. [12] 徐国庆,吕超英,肖贵成,等.悬浮抱杆组塔全程监控系统的研究及应用[J].电力建设,2012,33(9):106-108. [13] ZHANG W, LI Y X, SUN L M. SHM-oriented hybrid modeling for stress analysis of steel Girder bridge[J]. Journal of Bridge Engineering, 2021, 26(6). DOI: 10.1061/(ASCE)BE.1943-5592.0001710. [14] PAN Y, VENTURA C E, XIONG H, et al. Model updating and seismic response of a super tall building in Shanghai[J]. Computers & Structures, 2020, 239. DOI: 10.1016/j.compstruc.2020.106285. [15] CHENG X X, DONG J, HAN X L, et al. Structural health monitoring-oriented finite-element model for a large transmission tower[J]. International Journal of Civil Engineering, 2018, 16(1): 79-92. [16] ZHANG Z. A flexible new technique for camera calibration[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2000, 22(11): 1330-1334. [17] FENG D, FENG M Q, OZER E, et al. A vision-based sensor for noncontact structural displacement measurement[J]. Sensors, 2015, 15(7): 16557-16575. [18] YOO J C, HAN T H. Fast normalized cross-correlation[J]. Circuits, systems and signal processing, 2009, 28(6): 819-843. [19] HUANG M, ZHANG B, LOU W. A computer vision-based vibration measurement method for wind tunnel tests of high-rise buildings[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 182: 222-234.
点击查看大图
计量
- 文章访问数: 133
- HTML全文浏览量: 21
- PDF下载量: 2
- 被引次数: 0