摘要
为了研究近场地震作用下,基础隔震参数对储罐地震响应的影响,以1000 m3的储罐为研究对象,通过ADINA建立储罐的有限元模型并输入汶川武都近场地震波,选取不同的隔震参数分析其动力响应,结果表明:基础隔震可以有效降低储罐的基底剪力和罐壁等效应力;随着隔震层阻尼比的增大,储罐罐壁等效应力和基底剪力先增大后减小,隔震层阻尼比取0.1~0.3为宜;随着隔震周期的增大,储罐基底剪力和罐壁等效应力逐渐降低,隔震周期取2~4 s为宜;基础隔震措施不能控制储液的晃动波高。
In order to study of the effect of base isolation parameters on the seismic response of the base isolation tank under the action near field earthquake,choose 1000 m3 liquid storage tank as the research object and import wenchuan wudu seismic wave,through the finite element software ADINA. The dynamic response was analyzed by different isolation parameters.,the results show that the base isolation can effectively reduce the stress of the tank wall and the base shear force,with the increase of the damping ratio of isolation layer. The effective stress of the tank wall and the shear force increases firstly and then decreases,the damping ratio of isolation layer select 0. 1 - 0. 3 is appropriate,with the increase of the isolation period. The effective stress of the tank wall and shear force reduces gradually. The isolation period is appropriate from2 s to4 s,the base isolation measures fail to control the liquid sloshing height.
出处
《低温建筑技术》
2017年第10期47-52,共6页
Low Temperature Architecture Technology
关键词
近场
储罐
隔震
ADINA
near-field
tank
baseoisolation
ADINA
