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research-article

Basic Theory of Simplified Dynamic Model for Spherical Tank Considering Swinging Effect

[+] Author and Article Information
Yuan Lü

Student Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian, China
isodamper@163.com

Jiangang Sun

Professor College of Civil Engineering, Dalian Minzu University, Dalian, China
m13704266093@163.com

Zongguang Sun

Professor Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian, China
56714361@qq.com

Lifu Cui

College of Civil Engineering, Dalian Minzu University, Dalian, China
1622157421@qq.com

Zhen Wang

Professor College of Civil Engineering, Dalian Minzu University, Dalian, China
1748689426@qq.com

1Corresponding author.

ASME doi:10.1115/1.4044116 History: Received August 16, 2018; Revised June 12, 2019

Abstract

Consider the swinging effect of spherical tank, the theory of velocity potential is adopted, and a reasonable potential function is derived according to the boundary conditions. Further, the dynamic fluid pressure, the wave height of the liquid, the shear force and the overturning moment at the bottom of the spherical tank is calculated, and a simplified dynamic model of spherical tank considering liquid sloshing and swinging effect was constructed. The seismic response was studied and compared with the results without considering the swing effect. The results show that: For ?,?site conditions, base shear force and overturning moment of considering the swing effect is slightly smaller than when non-considering and the difference rate between the two is very small. ? ?site conditions, each condition value of considering the swing effect is larger than when non-considering and the difference rate between the two is relatively large. Aseismic design of spherical tank, the influence of swing effect should be considered if the site condition is III and IV, and the site of I and II can ignore the influence.

Copyright (c) 2019 by ASME
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