颗粒阻尼器对输电塔线系统减震性能研究  

STUDY ON THE SEISMIC MITIGATION PERFORMANCE OF PARTICLE DAMPERS APPLIED TO TRANSMISSION TOWER-LINE SYSTEM

作　　者：鲁正[1,2] 沈也雷 谭淇航 荣坤杰 田利[3] LU Zheng;SHEN Ye-lei;TAN Qi-hang;RONG Kun-jie;TIAN Li(Department of Disaster Mitigation for Structures,Tongji University,Shanghai 200092,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;School of Civil Engineering,Shandong University,Ji’nan,Shandong 250061,China)

机构地区：[1]同济大学结构防灾减灾工程系,上海200092 [2]同济大学土木工程防灾减灾全国重点实验室,上海200092 [3]山东大学土建与水利学院,山东济南250061

出　　处：《工程力学》2024年第7期9-18,共10页Engineering Mechanics

基　　金：国家自然科学基金项目(52178296);中央高校基本科研业务费专项项目(11080);土木工程I类高峰学科建设经费项目(20223YB15)。

摘　　要：对输电塔线系统进行缩尺模型振动台实验,从时域和频域的角度,对比了调谐质量阻尼器和颗粒阻尼器对输电塔的减震效果。利用ABAQUS建立了颗粒阻尼器控制输电塔线系统的离散元-有限元高精度耦合数值模型,对比了实验和模拟结果,并对塔线系统的耗能情况及颗粒阻尼器内部颗粒运动碰撞情况进行分析。研究结果表明:在地震激励下,颗粒阻尼器的减震效果较调谐质量阻尼器有更好的鲁棒性;该文所建立的颗粒阻尼器控制输电塔线系统模型能够良好地反映试件的动力特性和地震响应;在颗粒阻尼器的控制下,塔线系统总能量降低24.12%。当颗粒之间的碰撞次数和颗粒与容器的碰撞次数满足一定比例关系时,颗粒阻尼器能实现更优的控制效果。A scaled model shaking table test on the transmission tower-line system is conducted to compare the vibration control effects of tuned mass dampers and of particle dampers on the transmission tower from both time and frequency domain.A discrete element-finite element coupled numerical model is established in ABAQUS to simulate the transmission tower-line system controlled by particle dampers.The results of experiments and simulations are compared.The energy dissipation of the tower-line system and the collision of particles inside the particle damper are discussed.The study results show that:under a seismic excitation,the vibration control effect of particle dampers is more robust than that of tuned mass dampers.The numerical model of transmission towerline system with particle dampers established can well reflect the dynamic characteristics and seismic responses of the specimen.Owing to the particle damper,the total energy of the tower-line system is reduced by 24.12%.In order for particle dampers to achieve better control effects,there is an optimal ratio between the number of collisions among the particles and the number of collisions between the particles and the container.

关 键 词：输电塔线系统 颗粒阻尼器 离散单元法 减震性能 振动台实验 

分 类 号：TB535.1[理学—物理]