In order to ensure the continuity of the production process and avoid health, security, and ecological problems, the protection of the liquid storage tanks (LSTs) in industrial complexes against earthquakes is vital. Although base-isolation is successful in protecting LSTs from the detrimental effects of far-fault earthquakes, it is challenged by large-amplitude and long-period velocity pulses observed in near-fault earthquakes which may cause large isolator and sloshing displacements. Employing supplemental damping in the isolation system may reduce isolator displacements but the improvement in the superstructure response may be limited if not worsened. Thus, determining the performance limits of base-isolated LSTs with/without supplemental damping in terms of both isolation system and superstructure responses through a systematic examination considering different levels of earthquake magnitude and different fault distances is essential. Since the period and the amplitude of the ground velocity pulse is dependent on the earthquake magnitude and the closest fault distance, such an examination will also help reveal the influence of the characteristic properties of near-fault pulses on the responses of these structures. Therefore, here, a benchmark LST with different base-isolation systems with/without supplemental viscous dampers, located at different fault distances are subjected to synthetically generated near-fault earthquake records with different levels of moment magnitudes. Various isolator and viscous damper characteristics are taken into account. Non-linear time history analyses are conducted to obtain isolator displacement, sloshing displacement, and isolation system shear force responses and the performance limits of the benchmark LST with different base-isolation systems with/without supplemental dampers are presented in a comparative manner.

为了确保生产过程的连续性并避免健康，安全和生态问题，保护工业园区中的储液罐（LST）免受地震袭击至关重要。尽管基本隔离成功地保护了LST不受远程地震的有害影响，但是它受到了在近故障地震中观察到的大振幅和长周期速度脉冲的挑战，这可能会导致较大的隔离器和晃动位移。在隔离系统中采用补充阻尼可以减少隔离器的位移，但是如果不加重的话，上层建筑响应的改善可能会受到限制。因此，通过对地震等级不同和故障距离不同的系统检查，确定具有/不具有附加阻尼的基础隔震LST在隔震系统和上部结构响应方面的性能极限是至关重要的。由于地面速度脉冲的周期和幅度取决于地震幅度和最近的断层距离，因此这种检查还将有助于揭示近断层脉冲的特征特性对这些结构的响应的影响。因此，在这里，位于不同断层距离处，具有/不具有附加粘性阻尼器的具有不同基础隔离系统的基准LST，将经受合成生成的，具有不同矩震级的近断层地震记录。考虑了各种隔离器和粘性阻尼器的特性。进行非线性时程分析以获得隔离器位移，晃动位移和隔离系统剪切力响应，并以比较的方式介绍了具有/不具有附加阻尼器的不同基础隔离系统的基准LST的性能极限。