摘要
为解决采用常规被动控制技术难以降低储液罐晃动响应的问题,提出一种在隔震储罐中增设黏滞质量阻尼器(Viscous Mass Damper,简称VMD)的被动控制方法。基于储液罐的两质点简化模型,采用动力时程分析方法,对固定储罐、隔震储罐和增设VMD隔震储罐3种储罐的地震响应进行比较分析,并考虑VMD特征参数的影响,对储罐晃动响应被动控制方法的效果进行验证。结果表明:采用所提出的被动控制方法,不仅能够更加显著降低地震作用下储液罐的基底剪力和有效控制基底位移,避免隔震支座的剪切破坏,而且能够有效降低储液罐上部液体的晃动响应,避免过大的晃动响应所导致的罐顶破坏或储液外溢等问题。
To solve the problem that it is difficult to reduce the convective response of the liquid storage tank only using the ordinary isolation technology, this paper has proposed a new passive control method by equipping a viscous mass damper (VMD) in the isolated liquid storage tank. Based on the two-lumped-mass model of the tank, the dynamic time-history analysis method is employed to comparatively analyze the seismic responses of the fixed tank, isolated tank and the isolated tank with a VMD. Considering the influences of the equivalent mass and viscous damping coefficient of the VMD, the control effect of the isolated tank with the VMD is analyzed and verified. It is found that adopting the proposed passive control method, the base shear of the tank can be obviously reduced, which can avoid the shear failure of isolation bearings;and the base displacement can be effectively controlled, which can effectively reduce high sloshing response and avoid the failure of tank roof or spillover of the stored liquid.
作者
刘帅
LIU Shuai(School of Civil Engineering and Architecture, Zhejiang Sci-tech University,Hangzhou 310018, China)
出处
《噪声与振动控制》
CSCD
2019年第2期47-52,共6页
Noise and Vibration Control
基金
国家自然科学基金资助项目(51808500)
浙江省自然科学基金资助项目(LQ17E080014)
关键词
振动与波
储液罐
黏滞质量阻尼器
基底位移
晃动波高
被动控制方法
vibration and wave
liquid storage tank
viscous mass damper
base displacement
sloshing response
passive control method
