双回路变截面多棱锥钢管杆变形参数影响分析  

Deflection Influencing Factor Analysis for Double Circuit Variable Section Pyramid Pole

作　　者：冯衡 吴海洋 徐彬 FENG Heng;WU Hai-yang;XU Bin(Central South Electric Power Design Institute Co.,Ltd.of CPECC,Wuhan 430071,China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,湖北武汉430071

出　　处：《电力勘测设计》2021年第10期8-13,共6页Electric Power Survey & Design

摘　　要：以巴基斯坦某城市输电工程的设计实践为基础,通过实例计算,比较中国标准DL/T 5130-2001、欧盟标准BS EN 50341-2012、德国标准UNE-EN 50341-2-4-2019三个标准对钢管杆位移规定的差异,研究发现DL/T 5130-2001、UNE-EN 50341-2-4-2019对钢管杆变形限制相比BS EN 50341较为严格;从受力的角度,阐述了钢管杆变形时表现出的二阶效应特征;对主杆锥度、直径、壁厚、主杆截面型式对钢管杆变形的影响进行参数化分析,定量和定性分析研究这些因素对主杆变形影响程度。Based on project design in Karachi Pakistan,make a comparison of standards between DL/T 5130-2001,BS EN 50341-1-2012 and UNE-EN 50341-2-4-2019 by actual model calculation.It can be found that DL/T 5130-2001 and UNE-EN 50341-2-4-2019 has a more strictly limit of pole body deflection.Give an explanation of two order effect characteristics of steel tube bar deformation from aspect of load transferring.The influence of taper,diameter,thickness and section shape of main rod on deflection is studied.Quantitative and qualitative analyses are carried out to investigate the influence of these factors on the deformation of the pole body.

关 键 词：钢管杆 变形 二阶效应 锥度 极惯性矩 

分 类 号：TM75[电气工程—电力系统及自动化]