The inappropriate performance of liquid storage tanks following devastating earthquakes indicates that the tank damage could lead to catastrophic consequences. As the rocking response of unanchored tanks plays a significant role in their seismic performances, the base anchorage is an essential element to control the seismic performance of on-ground tanks. The present study focuses on the effect of anchorage systems, as the retrofitting strategy, on the seismic performance of an existing unanchored tank damaged during the Silakhor Earthquake of 2006 in Iran. To this end, regular steel and shape memory alloy (SMA) anchor bolts were utilized. The Seismic performance of the tank was evaluated before and after retrofitting. For every retrofitted tank, different configurations of anchor bolts were considered. The seismic performance of tanks has been investigated using incremental dynamic analysis (IDA) analysis. To assess the seismic performance of every case, a fragility analysis was conducted. The results revealed that anchored tanks showed better seismic performance compared to unanchored ones. It was also shown that the combination of energy dissipation and the super-elastic behavior of SMA anchors leads to a considerable reduction in shell failure and damage to the anchorage system.

毁灭性地震后液体储罐的不适当性能表明储罐损坏可能导致灾难性后果。由于无锚储罐的摇摆响应对其抗震性能起着重要作用，基础锚固是控制地面储罐抗震性能的重要因素。本研究的重点是锚固系统作为改造策略对 2006 年伊朗 Silakhor 地震中受损的现有非锚固储罐的抗震性能的影响。为此，使用了普通钢和形状记忆合金 (SMA) 地脚螺栓。在改造前后对储罐的抗震性能进行了评估。对于每个改装的储罐，都考虑了不同配置的地脚螺栓。已经使用增量动力分析（IDA）分析研究了储罐的抗震性能。为了评估每个案例的抗震性能，进行了脆性分析。结果表明，与未锚定的储罐相比，锚定的储罐表现出更好的抗震性能。研究还表明，能量耗散和 SMA 锚栓的超弹性行为相结合，可显着减少壳体失效和锚固系统的损坏。