Modal Analysis of a Super-large FRP Combined Tank System with Floating Roof Considering the Coupled Effect of Tank Fluid

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Ji, Jing^1^2 ; Yang, Maomao^2 ; Xu, Ming^1 ; Jiang, Liangqin^2 ; Chen, Xiaokun^2

Department of Architectural Engineering, Qiqihar Institute of Engineering, Qiqihar, Heilongjiang

161005, China^1

School of Civil and Architecture Engineering, Northeast Petroleum University, Daqing, Heilongjiang

163318, China^2

关键词: Coupled effect;    First-order frequency;    Floating roof;    Fluid couplings;    Storage tank;    Tank structure;    Vibration frequency;    Water storage;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012085/pdf
DOI  :  10.1088/1755-1315/218/1/012085

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The modal analysis of the super-large FRP combined tank structure system with floating roof is carried out. Firstly, the finite element model of the super-large FRP combined tank structure system with floating roof is established. Then, the modal analysis of the super-large FRP combined tank structure system with floating roof is carried out. The results show that when the storage height is less than or equal to 50% of the total storage height, the first-order frequency of the FRP combined tank fluid coupling vibration is very small. When the storage height is large, the vibration frequency of the FRP combined storage tank liquid coupling is larger than that when the water storage state is less than or equal to 50%. The vibration frequency of the tank fluid coupling also decreases with the increase of the tank radius. The larger the tank radius is, the more significant the tank fluid coupling effect is.