Thin‐walled shell structures are characterized by a lightweight structural form with high strength. This structure has many applications in various engineering fields and is considered to be a basic tool in the modern industry. This study investigates the effect of CFRP on tanks after post‐fire in order to examine the buckling and post‐buckling of the cylindrical tanks. Herein, post‐fire was introduced at different temperatures (150°C‐600°C). Ten laboratory specimens in two groups with verified temperatures, under external pressure, are examined. The models were designed to demonstrate how repairing steel tanks, which are damaged by fire, by using carbon‐fiber‐reinforced polymer can recover lost capacity. The results of testing under different theories and codes were compared. This study shows that the initial buckling load of the temperature group increased by 30.82% to 57.09% compared to the temperature without‐CFRP group. The overall buckling load of the temperature group increased by 37.01% to 67.74% compared to the temperature without‐CFRP group. The collapse load of the temperature group increased by 27.04% to 52.64% compared to the temperature without‐CFRP group. And using carbon‐fiber‐reinforced polymer on models, which are damaged by fire, can be an improvement behavior for the buckling and post‐buckling specimen tests.

中文翻译：

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CFRP改造的薄壁钢罐在射击后的行为

薄壁壳结构的特点是结构轻巧，强度高。这种结构在各个工程领域都有许多应用，被认为是现代工业中的基本工具。这项研究调查了CFRP对后火后储罐的影响，以检查圆柱形储罐的屈曲和后屈曲。在此，在不同温度（150°C-600°C）下引入后燃。在外部压力下，对两组经验证温度的十个实验室标本进行了检查。这些模型旨在演示如何使用碳纤维增强聚合物修复因火灾而损坏的钢制储罐，以恢复损失的容量。比较了不同理论和规范下的测试结果。这项研究表明，与不使用CFRP的温度组相比，温度组的初始屈曲载荷增加了30.82％，达到57.09％。与不使用CFRP的温度组相比，温度组的整体屈曲负荷增加了37.01％，达到67.74％。与不使用CFRP的温度组相比，温度组的破坏荷载增加了27.04％，达到52.64％。在因火灾而损坏的模型上使用碳纤维增强聚合物可以改善屈曲和屈曲后的试件性能。与未使用CFRP的温度相比，温度降低了64％。在因火灾而损坏的模型上使用碳纤维增强聚合物可以改善屈曲和屈曲后的试件性能。与未使用CFRP的温度相比，温度降低了64％。在因火灾而损坏的模型上使用碳纤维增强聚合物可以改善屈曲和屈曲后的试件性能。