摘要
以淮南—上海1 000 kV交流特高压输电线路中的某一特征段为工程背景,在Matlab中运用谐波合成法编制了空间相关的风速时间历程模拟程序,结合随机振动理论对输电塔线体系进行时程动力分析,计算出了输电塔的风振系数,并将时程分析计算的结果与《架空送电线路杆塔结构设计技术规定》以及《高耸结构设计规范》得出的风振系数进行了综合对比分析,为将来该类输电塔的抗风设计给出了合理化建议。
Under the background of the project suspention tower,a part of 1 000 kV UHV double-circuit transmission line , in this paper, the coefficients calculated by time history analysis method were analysed. Wind speed simulation program of spatial correlation is developed by using MATLAB. Combining with the theory of random vibration, the dy- namic response of the transmission tower-line system. The action of fluctuating wind loads were numerically simulated with ANSYS finite element software. The coefficients were obtained for calculating wind-induced vibration coefficient. The coefficients calculated by time history analysis method were compared with the values calculated by load stand- ard. Some suggestion to the wind resistance design of the transmission towers were recommended.
出处
《华东电力》
北大核心
2013年第3期593-597,共5页
East China Electric Power
关键词
输电塔
风振系数
风振响应
transmission tower
Wind-induced vibration coefficient
Wind-induced response