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Seismic reliability of spherical containers retrofitted by means of energy dissipation devices

机译:通过消能装置翻新的球形容器的抗震可靠性

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For the purpose of enhancing the seismic reliability of structures, external energy dissipation systems may be advantageously used. In this paper, the reliabilities of a spherical storage tank in original and updated states are assessed by means of simulation. The effect of the energy dissipation system is numerically evaluated by performing a set of nonlinear dynamic analyses on a spherical tank based on a detailed model that takes the fluid-structure interaction into account. To obtain robust estimators of the reliability, an ensemble including acceleration records with markedly different characteristics is used in the simulation study. The full reliability analysis shows that, for a typical spherical container widely used in the petrochemical industries, a reduction of the limit state probability in the order of 85% may be expected by introducing additional energy dissipation systems.
机译:为了增强结构的抗震可靠性,可以有利地使用外部能量耗散系统。在本文中,通过模拟评估了球形储罐在原始和更新状态下的可靠性。通过基于考虑流体-结构相互作用的详细模型,对球形储罐进行一组非线性动力学分析,可以对能量耗散系统的效果进行数值评估。为了获得可靠的可靠性估算器,在仿真研究中使用了包括加速度记录的集合,这些记录具有明显不同的特征。全面的可靠性分析表明,对于在石化行业中广泛使用的典型球形容器,可以通过引入其他的能量消散系统来将极限状态概率降低85%左右。

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