电力学报2025，Vol.40Issue(3)：225-230,6.DOI:10.13357/j.dlxb.2025.024
±800kV白浙线长江大跨越插入式钢管高立柱基础的定位精度控制
Positioning Accuracy Control of Plug-in Steel Tube High Column Foundation for±800 kV Baizhe Transmission Line Across the Yangtze River
万华翔 1钟文 1李延军 1汤小兵1
作者信息
- 1. 安徽送变电工程有限公司,合肥 230022
- 折叠
摘要
Abstract
For the first time,±800 kV single circuit and 500 kV double circuit are erected on the same tower for the Yangtze River crossing of Baizhe transmission line.There are 38 conductors and ground wires in the crossing span.The crossing tower adopts a large specification plug-in steel pipe high column foundation.The plug-in steel pipe is 8.7 m long and 1.9 m in diameter.It is connected in two sections,with a total weight of 27.593 t.The bottom of the steel pipe is fixed with anchor pier columns and anchor bolts.The accuracy control of the key indicators such as the root opening,height difference,torsion and inclination of large specification plug-in steel pipes is directly related to the smooth installation of high towers.Through in-depth analysis of the characteristics and construction difficulties of the plug-in steel pipes high column foundation,and drawing on the experience of similar projects in the past,the overall scheme of twice pouring and subsection control is adopted.In terms of accuracy control,the total station is used to measure the"four lines and eight points"elevation and root opening size of the upper flange surface of the steel pipe.At the same time,high-precision wireless inclina-tion sensor is installed in the diagonal direction to achieve real-time and rapid monitoring.The data of each con-struction control point are calculated according to the design control point and it is made to reach the design val-ue by setting the control line.The successful implementation of this method in Baizhe Great Crossing has made the maximum deviation of the root opening of the plug-in steel pipe foundation only 9 mm,the error rate only 0.19‰,and the maximum deviation of the height difference only 7 mm,which reaches the excellent standard.The high-precision control of the positioning of the large crossing plug-in steel pipe high column foundation is realized,which has a high reference value for similar projects in the future.关键词
特高压输电线路/大跨越/插入式钢管/高立柱/定位精度Key words
UHV transmission line/large span/plug-in steel pipe foundation/high column/positioning accuracy分类
土木建筑引用本文复制引用
万华翔,钟文,李延军,汤小兵..±800kV白浙线长江大跨越插入式钢管高立柱基础的定位精度控制[J].电力学报,2025,40(3):225-230,6.
