Seismic Analysis of Conventional and Isolated LNG Tanks Using Mechanical Analogs
Seismic Analysis of Conventional and Isolated LNG Tanks Using Mechanical Analogs
复制标题
DOI：
10.1193/1.2945293
复制
发表时间：
2008-08
影响因子：
5
通讯作者：
I. Christovasilis;A. Whittaker
中科院分区：
文献类型：
--
作者：
I. Christovasilis;A. Whittaker
一个传统的和隔离的垂直，圆柱形，液化天然气（LNG）罐的地震响应计算使用的机械模拟和有限元代码来判断的初步设计的模拟和地震隔离的有效性的效用。所报告和统计分类的数据包括底部剪力、整体倾覆力矩和水槽中的波高。从这两个数值模型得到的结果是一致的，并表明，机械模拟可以使用的初步分析和设计的常规和隔离的LNG罐，具有类似的尺寸，本研究的样品罐的信心。隔震LNG储罐中的基底剪力和倾覆力矩为常规储罐计算值的10%至15%;波高不受隔震系统引入的影响。
The seismic response of a conventional and an isolated vertical, cylindrical, Liquefied Natural Gas (LNG) tank is computed using a mechanical analog and a finite element code to judge the utility of the analog for preliminary design and of the effectiveness of seismic isolation. Data reported and statistically sorted include base shear, global overturning moment, and wave height in the tank. The results obtained from the two numerical models are in good agreement and demonstrate that the mechanical analog can be used with confidence for the preliminary analysis and design of conventional and isolated LNG tanks that have similar dimensions to the sample tank of this study. The base shear and overturning moment in the seismically isolated LNG tank are 10% to 15% of the values computed for the conventional tank; the wave heights are unaffected by the introduction of a seismic isolation system.