可移动式减晃板在AFT结构中的应用与减振效果分析  

Application of Movable Anti-sloshing Plate in AFT Structure and Analysis of Vibration Reduction Effect

作　　者：宋波[1,2] 周恒 李邦 SONG Bo;ZHOU Heng;LI Bang(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing International Cooperation Base for Science and Technology-Aseismic Research of the Rail Transit Engineering in the Strong Motion Area,University of Science and Technology Beijing,Beijing 100083,China;State Nuclear Electric Power Planning Design&Rsearch Institude Co.Ltd.,Beijing 100095,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]北京科技大学强震区轨道交通工程抗震研究北京市国际科技合作基地,北京100083 [3]国核电力规划设计研究院有限公司,北京100095

出　　处：《太原理工大学学报》2022年第6期1093-1100,共8页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(52078038);中央高校基本科研业务费专项资金资助项目(FRF-MP-20-20)。

摘　　要：Absorber Feed Tank(AFT)结构是发电厂脱硫工艺中一种混凝土结构支撑浆液罐的复合结构。对赤峰市某火力发电厂内AFT结构进行现场监测发现,浆液搅拌机在运行过程中使浆液罐内的浆液产生巨幅晃动,浆液不断冲击罐壁,加剧了结构的振动,严重影响结构安全。为减轻浆液晃动对结构的不利影响,提出在浆液罐内设置可移动式减晃板装置,通过降低设备运行时浆液罐内浆液的晃动波高,以达到减振效果。利用ADINA有限元软件建立AFT结构-浆液-减晃板的流固耦合模型,进行正常运行状态下与近远场地震作用下的结构动力时程分析,选取四个数据监测点监测浆液液面晃动波高和罐顶位移。结果表明:浆液的晃动波高由浆液罐边缘至中心逐渐减小,增加减晃板装置后,在正常运行状态与近远场地震作用下,浆液晃动波高与浆液罐罐顶的振动位移均会减小,可移动式减晃板装置对AFT结构振动有一定的控制作用。Absorber Feed Tank(AFT)structure is a composite structure of concrete structure supporting slurry tank in power plant desulfurization process.The field monitoring of AFT structure in a thermal power plant in Chifeng City shows that the slurry in the slurry tank shakes greatly during the operation of slurry mixer,and the slurry constantly impacts the tank wall,which aggravates the structural vibration and seriously affects the structural safety.In order to solve this problem,an movable anti-sloshing plate device was proposed in the slurry tank to reduce the slurry sloshing wave height in the slurry tank during the operation of the equipment,so as to reduce the vibration of AFT structure.The fluid structure coupling model of AFT structure slurry anti-sway plate was established by using ADINA finite element software.The dynamic time history analysis of the structure under normal operation and near-field and far-field earthquake was carried out.Four data monitoring points were selected to monitor the sloshing wave height of slurry liquid level and tank top displacement.The results show that the slurry sloshing wave height gradually decreases from the edge to the center of the slurry tank.After adding the anti-sloshing plate device,the slurry sloshing wave height and the vibration displacement of the slurry tank top decrease under normal operation state and near-field and far-field action.The movable anti-sway plate device has a certain control effect on the vibration of AFT structure.

关 键 词：AFT结构 现场监测 可移动式减晃板 流固耦合 结构减振 

分 类 号：TU399[建筑科学—结构工程]