（中国电力科学研究院， 北京 100055）

［摘要］输电角钢塔是架空输电线路的重要部件，约占线路总投资的20%，其生产加工包含二维单线图绘制和三维放样等环节，正确计算角钢塔口宽尺寸是加工和组装铁塔的必要条件。在研究角钢塔主材杆件对齐原理的基础上，通过深入分析变坡塔身、不同规格塔段主材的连接形式，采用双相切圆方法求解角钢塔各塔段口宽，准确计算出变坡多塔身、不变坡多塔段外皮对齐情况下的口宽尺寸。根据该方法基于VC++和OSG开发了相关计算软件，并在若干项目中进行了验证，结果表明，该方法性能稳定、精度可靠，能较好地满足实际工程要求。

［关键词］输电角钢塔； 口宽计算； 双相切圆

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2016)14-0055-04

Calculation method of waist width of angle steel transmission tower based on double-tangent circles

Wang Changzhi, Li Qinghua, Han Junke, Wang Fei, Liu Yaduo, Su Zhigang

(China Electric Power Research Institute, Beijing 100055, China)

Abstract:The angle steel transmission tower is an important component of the overhead transmission line, accounting for about 20% of the total line investment. Its production and processing contains two-dimensional single line drawings and three-dimensional layouts, and correct calculation of waist width of angle steel tower is necessary condition for machining and assembly of the steel tower. Based on the research of alignment principle of main components of angle steel tower, connection forms of variable slope tower body and main components of angle steel tower with different specifications were in-depth analyzed. The double-tangent circles method was used to solve the waist width of each angle steel tower and accurately calculate waist width sizes under the conditions of variable slope multiple tower bodies and non-variable slope multiple tower bodies with skin alignments. According to this method, the related calculation software was developed based on VC++ and OSG, and the software was verified in some projects. Results show that the method has stable performance and reliable accuracy, and can meet the requirements of practical engineering.

Keywords:angle steel transmission tower;  waist width calculation; double-tangent circle

作者简介：汪长智，硕士，工程师，Email:wangchangzhi@epri.sgcc.com.cn。