地震作用下高压输电塔-线体系纵向减震控制分析  

Longitudinal Vibration Control Analysis of Power Transmission Tower-Line System under Seismic Excitation

作　　者：田利[1] 荣坤杰 TIAN Li;RONG Kunjie(School of Civil Engineering,Shandong University,JiJnan,China,250061)

机构地区：[1]山东大学土建与水利学院,山东济南250061

出　　处：《沈阳建筑大学学报（自然科学版）》2018年第4期623-629,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51578325;51208285)

摘　　要：目的研究地震作用下高压输电塔-线耦合体系纵向减震控制.方法运用有限元分析软件ABAQUS建立高压输电塔-线耦合体系的精细化模型.利用非线性时程方法分析地震作用下碰撞摆(Pounding Tuned Mass Damper)对输电塔-线体系的减震控制,并与悬挂质量摆(Suspension Mass Pendulum)的减震效果进行对比分析.结果以Kobe地震作用为例,悬挂质量摆控制下输电塔-线体系塔顶位移、加速度和主材轴力峰值减振率分别为29%、23%和26%,碰撞摆控制下的峰值减振率分别为41%、29%和38%,可以看出,碰撞摆的减振效果明显优于悬挂质量摆.结论悬挂质量摆能够有效地抑制结构的不良振动,而碰撞摆的震动控制能力明显强于悬挂质量摆.In this paper,the longitudinal vibration control of power transmission tower-line coupling system under the seismic excitation is studied. A three-dimensional finite element model of a power transmission tower-line coupling system is established in ABAQUS. The vibration control of the transmission tower-line system using pounding tuned mass damper（PTMD） under the seismic excitation is analyzed by the nonlinear time-history method,and compared with the control effect of the suspension mass pendulum（SMP）. Taking the Kobe earthquake loading as an example,the peak reduction ratios of the displacement,acceleration,and axial force of the transmission tower-line system under the control of the pendulum mass pendulum are 29%,23%,and 26%,respectively.The peak reduction ratios under the pounding tuned mass damper are 41%,29% and 38%,respec-tively. It can be seen that the reduction effect of the pounding tuned mass damper is obviously better than that of the suspended mass pendulum. The results showthat the suspended mass pendulum can effectively suppress the harmful vibration of the transmission tower-line system,and the vibration control ability of the pounding tuned mass damper is obviously stronger than the suspended mass pendulum.

关 键 词：输电塔-线体系 减震控制 悬挂质量摆 碰撞摆 

分 类 号：TU352.1[建筑科学—结构工程]