Fluid-structure interactive seismic response and vibration dissipation method of spherical liquid-storage tank
Fluid-structure interactive seismic response and vibration dissipation method of spherical liquid-storage tank
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发表时间：
2010
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通讯作者：
O. Zhi-gang
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作者：
O. Zhi-gang
为了减轻球形储液罐在地震作用下的破坏，利用ANSYS软件建立了1000 m3的考虑液体晃动的球形储液罐有限元模型，进行了地震反应分析，研究了液体晃动对储液罐地震反应的影响，结果表明，支撑系统是储液罐的薄弱环节，因此，本文研究了通过引入被动控制技术和改变支承系统的角度来耗散振动能量的方法，数值分析结果表明，球形液体支承结构的地震反应比传统的球形液体支承结构的地震反应要小。通过对储罐体系进行被动控制，可以有效减小储罐的抗震能力，而改变支撑体系的角度可以有效提高储罐的抗震能力。
To alleviate the damage of spherical liquid-storage tank under earthquake,this paper performs seismic response analysis by building a finite element model with ANSYS for the tank,which involves fluid sloshing with the volume of 1000 m3.The effect of fluid sloshing on the seismic response is studied.The result shows that the support system is the weak link of the tank.Accordingly,this paper investigates the methods for dissipating the vibration energy by introducing the passive control technology and changing the angle of the support system.Numerical analysis result shows that the seismic response of the spherical liquid-storage tank can be effectively reduced by conducting passive control on the system of the tank,and the angle change of support system can improve the anti-seismic capacity of the tank effectively.