摘要
单柱拉线塔是一种适合于特高压直流输电线路的塔型,导线脱冰工况下特高压单柱拉线塔的动态响应值得研究。利用有限元分析软件ANSYS建立特高压单柱拉线塔塔线体系的有限元模型,对导线脱冰工况下塔线体系的动态响应进行计算,分析特高压单柱拉线塔脱冰动态响应的特点,研究拉线初应力变化对特高压单柱拉线塔脱冰动态响应的影响。研究结果表明:导线脱冰工况下,拉线挂点以上主柱发生了扭转变形,该部分斜材受到的冲击作用最大,应加强该部分斜材的强度;随着拉线初应力的增大,拉线挂点以上主柱扭转变形量增大。
Guyed single-mast tower is fit for UHVDC transmission,it＇s worth studying the dynamic response of UHV guyed single-mast tower under conductor ice-shedding condition. The finite element model of UHV guyed single-mast towerline system was built by using ANSYS. The dynamic response about the tower-line system under the condition of conductor ice-shedding was calculated. The characteristics of dynamic response of guyed single-mast tower were analyzed. The influence of the guy wire＇s initial stress on the dynamic response of guyed single-mast tower was studied. The results showed that the main column above guy wire hang points produced torsional deformation,the impact of diagonal members＇ in that position was larger,the strength of diagonal members in that position should be reinforced. The torsional deformation of the main column above guy wire hang points increased with the increasing of guy wire＇s initial stress.
作者
杨文刚
高松
葛永庆
Yang Wengang Gao Song Ge Yongqing(School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)
出处
《钢结构》
北大核心
2016年第12期53-57,27,共6页
Steel Construction
基金
国家自然科学基金青年科学基金(51608195)
河北省自然科学基金(E2016502102)
关键词
单柱拉线塔
脱冰
动态响应
有限元
guyed single-mast tower
ice-shedding
dynamic response
finite element
