地震激励下浮顶油罐的建模，考虑密封系统和顶板冲击的影响

IF 3.9 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2024-10-29 DOI:10.1016/j.istruc.2024.107590

Michela Salimbeni , Maurizio De Angelis , Mariano Ciucci

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引用次数: 0

摘要

本文介绍了带浮顶和密封系统的常压储罐的完整有限元（FE）模型，以分析其在地震激励下的抗震行为，同时还探讨了简化建模方法，以加快评估速度。本文介绍了带浮动顶盖的常压储罐在地震作用下的建模，重点是机械弹簧密封系统的存在和顶壁冲击。使用 Abaqus 中的任意拉格朗日-欧勒（ALE）方法开发了一个完整的有限元模型，包括罐体、流体、顶盖、密封系统和撞击。对不同地震进行了地震分析。此外，还通过解耦垂直和水平屋顶运动部分探索了简化模型。垂直运动通过文献模型进行分析，水平运动通过具有刚性冲击的单自由度振动冲击系统进行分析。结果表明，完整的有限元模型在模拟带密封系统的浮顶油箱的地震行为方面非常有效，而且使用简化模型可以更快、更准确地进行分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Modeling of floating roof tanks under seismic excitation, accounting for the influence of sealing system and the roof pounding

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Modeling of floating roof tanks under seismic excitation, accounting for the influence of sealing system and the roof pounding

This paper presents a complete finite element (FE) model of an atmospheric tanks with floating roof and sealing system to analyze its seismic behavior under earthquake excitation, while also exploring simplified modeling approaches for faster assessments. The modeling of atmospheric tanks with floating roofs subjected to earthquakes, focusing on the presence of the mechanical spring seal system and roof-wall pounding, is described. A complete finite element model including the tank, fluid, roof, sealing system, and pounding has been developed using the Arbitrary Lagrangian–Eulerian (ALE) approach in Abaqus. Seismic analyses were performed with different earthquakes. Simplified models were also explored by decoupling the vertical and horizontal roof motion components. Vertical motion was analyzed with a literature model and horizontal motion with a single-degree-of-freedom vibro-impacting system with rigid impact. The results demonstrate the effectiveness of the complete FE model in simulating seismic behavior of floating roof tank with sealing system and the use of simplified models for faster, more accurate analyses.

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来源期刊

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.