储液对大型石油储罐抗风稳定性能的影响分析

Study on the Effect of Stored Liquid on Wind-resistant Stability of Large Open-topped Tank

针对储液对大型在役外浮顶储罐抗风稳定性能的影响机制进行了探究,以某10万m^3大型外浮顶变壁厚钢制储罐为研究对象,利用Abaqus对不同液位下的储罐进行了风载荷作用下的静力学分析、线性屈曲分析和几何非线性屈曲分析。仿真计算结果表明:在风压为1 kPa的条件下,随着液位的上升,储罐从主要受风载荷作用变形变为主要受储液带来的静水压力作用变形;且储液显著提升了储罐的刚度,满载状态下储罐的临界屈曲风载荷是空载时的6.18倍。

This paper studies the effect of liquid storage on the wind stability of in-service large-scale open-topped tanks.An 100,000 cubic meter in-service open-topped steel storage tank is used as a research object.And the static analysis,linear buckling analysis and geometric nonlinear buckling analysis of the storage tank under wind load are carried out using Abaqus.The simulation calculation results shows that under the condition of wind pressure of 1 kPa,as the liquid level rises,the storage tank changes from being mainly deformed by the wind load to being mainly deformed by the hydrostatic pressure caused by the storage liquid;and the storage liquid is significantly improved.The rigidity of the storage tank,the critical buckling wind load of the storage tank under full load is 6.18 times of that under no liquid storage state.