特高压长悬臂输电塔鲁棒性分析  

Robustness analysis of UHV long cantilever transmission tower

作　　者：吴刚 张晓辉 李殿亮 蔡建国[2] WU Gang;ZHANG Xiao-hui;LI Dian-liang;CAI Jian-guo(China Energy Engineering Group Jiangsu Power Design Institute Co.,Ltd.,Nanjing 211102,China;Key Laboratory of Concrete and Prestressed Concrete Structures of MOE,SoutheastUniversity,Nanjing210096,China)

机构地区：[1]中国能源建设集团江苏省电力设计院有限公司,江苏南京211102 [2]东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096

出　　处：《空间结构》2023年第2期80-87,96,共9页Spatial Structures

摘　　要：特高压输电是目前世界上最先进的输电技术,具有输送容量大、送电距离远、线路损耗低和占用土地少等优点,得到越来越多的应用,其中,特高压长悬臂输电塔起着非常重要的作用,因此有必要对其进行鲁棒性分析.首先基于应变能对结构的构件重要性系数进行了分析,鲁棒性与结构中重要性系数最大的构件有关,在此基础上,对结构的鲁棒性进行研究.其次为了提高结构的鲁棒性,对结构的构件布置形式进行优化,使得主体结构的斜材得到充分利用,提供备用传力路径,降低了结构中构件的重要性系数,结构的鲁棒性从优化前的2.18变为4.03,提高了1.85倍.UHV transmission is the most advanced power transmission technology in the world.It has many advantages,such as large transmission capacity,long transmission distance,low line loss and less land occupation.UHV long cantilever transmission tower plays a very important role,so it is necessary to analyze its robustness.Firstly,the importance coefficient of structural components is analyzed based on strain energy.The robustness is related to the component with the largest importance coefficient in the structure.Based on this,the robustness of the structure is studied.Secondly,in order to improve the robustness of the structure,the layout form of structural components is optimized to make full use of the diagonal members of the main structure,to provide alternative force transferred path,and to reduce the importance coefficient of structural components.The robustness of the structure changes from 2.18(before optimization)to 4.03,an increase by 1.85 times.

关 键 词：特高压长悬臂输电塔 鲁棒性 应变能 传力路径 

分 类 号：TU347[建筑科学—结构工程]