考虑摆动效应的立式储罐隔震分析简化力学模型

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (11) : 20-27.

论文

孙建刚1,2 郝进锋3 刘扬3 王振1 崔利富1

作者信息 +

The Simplified Mechanical Model of Vertical Storage Tank Isolation Analysis of Considering Swing Effect

Sun Jiangang1,2 Hao Jinfeng3 Liu Yang3 Wang Zhen1 Cui Lifu1 #br#

Author information +

文章历史 +

摘要

对于基础隔震大型立式储罐的地震响应分析问题，考虑土壤与结构的相互作用和储罐的摆动效应，从流体速度势理论出发，结合储罐储液与罐壁的边界条件，建立液体运动势函数和相应的基底剪力、倾覆力矩及波高的理论表达式；并依据剪力和弯矩等效的原理，建立了具有摆动效应的基础隔震储罐的力学简化模型，利用能量原理建立了考虑摆动效应的立式储罐隔震体系的运动方程。同时，以15万m3大型储罐为例，进行了减震效应数值计算分析，并与无摆动效应的隔震体系的简化力学模型进行了比较分析。结果表明：大型储罐采用基底隔震装置，可以有效地降低储罐的基底剪力，对液体晃动波高的控制效果较差，建议在高烈度区，满足晃动波高的前提下，储罐上部结构可以降低烈度进行设计。

Abstract

For the analysis problem of seismic response of the large vertical tanks with the base isolation, the interaction of soil and structure and the swing effect of storage tank are considered, start from the theory of fluid velocity potential, the boundary conditions of reservoir storage tank and tank wall are combined, liquid movement potential function and the corresponding the theoretical expression of base shear, overturning moment and the wave height are established. According to the equivalent principle of the shear and moment, the simplified mechanics model of base isolation tank with swinging effect is established, the motion equation of vertical storage tank isolation system that considers the swinging effect is established through using the energy principle. At the same time, take the 1500003m large scale storage tank for example, the dampening effect numerical analysis is carried on, and comparative analysis with simplified mechanical model of isolated system of no swinging effect is conducted. The results show that：the large scale storage tank with isolated device can effectively reduce the base shear of storage tank , have the poor control effects to liquid sloshing wave height, propose in high intensity area, under the promise of meeting the sloshing wave height, the upper structure of the storage tank can be designed on the basis of reducing the intensity.

导出引用

孙建刚1,2 郝进锋3 刘扬3 王振1 崔利富1. 考虑摆动效应的立式储罐隔震分析简化力学模型[J]. 振动与冲击, 2016, 35(11): 20-27

Sun Jiangang1,2 Hao Jinfeng3 Liu Yang3 Wang Zhen1 Cui Lifu1 . The Simplified Mechanical Model of Vertical Storage Tank Isolation Analysis of Considering Swing Effect[J]. Journal of Vibration and Shock, 2016, 35(11): 20-27

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