新型三角形断面输电铁塔的应用介绍

The Application and Introduction of New Triangular Cross-Section Transmission Tower

摘要: 作为国家电网公司新技术推广应用实施项目，三角形断面钢管塔是以三角形为断面形状的一种新型铁塔型式，具有约束应力小、自重轻、造价低、施工组立快等优特点，尤其在线路廊道狭窄地段其占地面积小的优点更加突出，经济优势和社会效益明显。目前，国内架空输电线路铁塔多采用四边形铁塔，抚州城南变配套220千伏线路工程中成功应用三角形断面铁塔，顺利通过竣工验收，并正式投产运行，属国内首次应用。

Abstract: As a new technology project of promotion and application by State Grid, the triangular steel tower is a new type tower with triangular cross-section. It has a series of advantages and characteristics, such as small restraint stress, light weight, low cost and fast construction, especially has the more prominent advantages by its small area in a narrow corridor, and obvious economic advantages and social benefits. At present, it mainly uses the quadrangle tower in domestic transmission line. In the Fuzhou Chengnan substation supporting 220 kV transmission lion, it successfully used the triangular tower, passed the final inspection, officially was put into operation, and became the No. 1 application in China.