摘要
利用ANSYS软件对110kV直线型输电钢管杆进行模态分析、谱分析和瞬态分析,得到其振动特性、地震作用响应和脉动风振响应,并分析了横担对主杆动力响应的影响。结果表明,钢管杆的变形随着高度而增大,应力水平较低,抗震抗风性能良好;钢管杆具有较大的柔度和强度富余,位移是其设计的控制因素;主杆和横担的联接处局部应力过大,需通过构造措施予以加强;对横担的截面、质量和位置进行合理优化布置可以减小主杆的动力响应。
To study the dynamic performances of steel poles,we conducted modal analysis,spectrum analysis and transient analysis at a 110kV linear transmission steel pole with an ANSYS software.Then we studied the vibration characteristics,seismic responses,fluctuating wind-induced responses and the influence of arms.The experimental results indicate that the deformation of the steel pole increases with the height adds,stress level is low,and it has a good seismic and wind-resistant performance.Displacement is the control factors in structural design because of the big surplus of intensity and the larger flexibility.The local stresses of the connections between pole and arms are so big that it is necessary to take some construction measures to strengthen.It can reduce the pole＇s dynamic responses through an optimal section,rational layout of quality and location.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第5期106-110,共5页
Journal of Wuhan University of Technology
关键词
输电钢管杆
动力性能
地震作用
脉动风载
ANSYS
steel transmission pole
dynamic performances
earthquake action
fluctuating wind load
ANSYS
