Sloshing effects on the seismic design of horizontal-cylindrical and spherical industrial vessels
Sloshing effects on the seismic design of horizontal-cylindrical and spherical industrial vessels
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DOI：
10.1115/1.2217965
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发表时间：
2006-08
影响因子：
1
通讯作者：
S. Karamanos;L. A. Patkas;Manolis A. Platyrrachos
中科院分区：
文献类型：
--
作者：
S. Karamanos;L. A. Patkas;Manolis A. Platyrrachos
本文研究了晃动对卧式圆柱形和球形工业容器抗震设计的影响。假设小振幅的自由表面的高度，线性晃动问题得到，其解决方案提供晃动频率，模式和质量。基于容器-流体运动的“脉冲-对流”分解，提出了一种有效的地震力计算方法。该方法产生了适当的弹簧质量力学模型，它代表晃动的容器流体系统在一个优雅和简单的方式。特殊问题，如水平圆柱形容器的变形能力或球形容器支撑的灵活性，也被考虑在内。所提出的方法可用于在液体容器地震设计的框架中计算地震力，并且扩展了现有抗震设计规范中所述的立式圆柱形储罐的当前设计实践（例如，API标准650和欧洲规范8）。该方法在三个设计实例中进行了说明。
The present paper investigates sloshing effects on the earthquake design of horizontal-cylindrical and spherical industrial vessels. Assuming small-amplitude free-surface elevation, a linearized sloshing problem is obtained, and its solution provides sloshing frequencies, modes, and masses. Based on an "impulsive-convective" decomposition of the container-fluid motion, an efficient methodology is proposed for the calculation of seismic force. The methodology gives rise to appropriate spring-mass mechanical models, which represent sloshing effects on the container-fluid system in an elegant and simple manner. Special issues, such as the deformability of horizontal-cylindrical containers or the flexibility of spherical vessel supports, are also taken into account. The proposed methodology can be used to calculate the seismic force, in the framework of liquid container earthquake design, and extends the current design practice for vertical cylindrical tanks stated in existing seismic design specifications (e.g., API Standard 650 and Eurocode 8). The methodology is illustrated in three design examples.