SMA阻尼器在输电塔-线体系中的风振控制研究  

Research on Wind Vibration Control of SMA Damper UnderTransmission Tower System

作　　者：刘玥君[1] 李业勋 陈一铭 LIU Yuejun;LI Yexun;CHENG Yiming(Northeast Electric Power University,College of Architectural Engineering,Jilin Jilin 132012;State grid Shanhai South Power Supply Company,Shanghai 201103)

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012 [2]国网上海市南供电公司,上海201103

出　　处：《东北电力大学学报》2023年第6期61-70,共10页Journal of Northeast Electric Power University

基　　金：国家自然科学基金面上项目(51878129);吉林省教育厅"十三五"科学技术研究项目(JJKH20180424KJ)。

摘　　要：输电塔-线作为风敏感结构,易受到风荷载的影响而发生破坏,有必要采取控制技术来减少危害。本文采用新型SMA阻尼器布置在输电塔-线体系上进行风振控制。使用有限元软件建立输电塔-线体系模型。基于MATLAB软件,采用线性自回归滤波器法模拟随机脉动风荷载的时程样本。根据SMA阻尼器的减振原理和工作方式,设计六种不同的布置方案,并分别进行风振响应分析,提取不同方案下塔顶加速度和位移时程,并模拟三种风速的风荷载,进一步分析不同方案下的减振效果。根据阻尼器本身的结构与材料,对阻尼器进行参数分析,改变阻尼器的弹簧刚度、铅块厚度、SMA丝材料,并分别分析效果。结果表明:在方案中,在塔头上布置阻尼器对塔顶位移控制效果最好,沿塔身布置阻尼器对塔顶加速度控制最好。在弹簧刚度在500 N/mm时取得最佳减振效果、铅块厚度为7 mm时可以取得最佳减振效果。The transmission tower-line systems are wind-sensitive structures,which can cause severe damage by wind-induced vibration.Therefore,it is necessary to apply control techniques to mitigate the damage.In this study,a novel SMA damper is used to control the wind-induced vibration of the transmission tower-line system.A finite element model of the system is developed using finite element software.Based on MATLAB software,a linear auto regressive filter method is adopted to simulate the time series samples of random fluctuating wind loads.According to the damping principle and working mode of the SMA damper,six different layout schemes are designed and their wind-induced vibration responses are analyzed respectively.The time series of the tower top acceleration and displacement under different schemes are obtained,and the wind loads with three different wind speeds are simulated to further analyze the damping effects under different schemes.A parameter analysis of the damper is conducted according to its structure and material,changing the spring stiffness,lead block thickness,and SMA wire material of the damper,and their effects are analyzed respectively.The results indicate that:among the schemes,arranging dampers on the tower head has the best effect on controlling the tower top displacement,and arranging dampers along the tower body has the best effect on controlling the tower top acceleration.The optimal damping effect is achieved when the spring stiffness is 500 N/mm,and the optimal damping effect is achieved when the lead block thickness is 7 mm.

关 键 词：输电塔-线体系 风振响应 形状记忆合金 振动控制 动力响应 参数优化 

分 类 号：TM75[电气工程—电力系统及自动化]