角钢反弯K节点分析  

Analysis of Recurvation Steel Angle K Joint

作　　者：张秀丽[1] 杨景胜[2] 

机构地区：[1]华南农业大学工程基础教学与训练中心,广东广州510642 [2]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：《水电能源科学》2015年第9期173-176,共4页Water Resources and Power

摘　　要：鉴于酒杯塔中横担和曲臂的K节点在大风等工况下均存在反弯现象,受压弦杆的边界条件复杂,其稳定承载力的确定问题,通过建立精细化有限元模型考察反弯K节点的受力性能,探讨了不同长细比和相邻侧弦杆不同拉力T1作用下弦杆的承载能力和破坏形式。结果表明,理论计算的弦杆稳定承载力有一定的安全储备,弦杆拉力对相邻弦杆的稳定有一定影响。The K joint of cup tower＇s middle cross arm and crank web has inflection point when the tower worked in the wind case. The boundary condition of compression chord is complex and it need to determine the stability capacity. By establishing elaboration finite element model, this paper explored the joint＇s bearing capacity and failure modes of different slenderness ratio and different pull force of the adjacent side chord. The results show that the theoretical stability capacity of the chord has some safety margin, and the chord tension has a certain influence on the stability of the adjacent chord.

关 键 词：反弯K节点 稳定承载力 受力性能 有限元分析 

分 类 号：TM713[电气工程—电力系统及自动化]