This paper reports research on the thermal buckling and post-buckling of vertical steel tanks under heat induced by a nearby burning tank. A two-layer solid flame model is adopted and a heat transfer analysis is carried out to compute temperatures in the target tank. The temperatures are used as input in the structural analysis based on a geometrically nonlinear analysis and temperature-dependent properties of steel. The structural problem is solved by a finite element analysis to trace the pre- and post-critical equilibrium path. The lower critical temperature is detected and subsequent instabilities are identified until the temperature reaches the maximum value that can be transferred for the specific fuel burning. The post-buckling response is investigated to account for wind effects, separation between tanks, and fluid stored in the target tank. The ratio between first critical temperature and the final temperature at which the process reaches a thermal steady state, is computed in each case.

本文报道了在附近燃烧罐引起的热量作用下，立式钢罐的热屈曲和后屈曲的研究。采用两层固体火焰模型，并进行传热分析以计算目标罐中的温度。温度是基于几何非线性分析和钢的温度相关特性在结构分析中用作输入的。结构问题通过有限元分析解决，以追踪临界前后的平衡路径。检测到较低的临界温度，并识别后续的不稳定性，直到温度达到特定燃料燃烧可传递的最大值为止。研究了屈曲后的响应，以考虑风的影响，储罐之间的间距，和储存在目标油箱中的液体。分别计算第一临界温度与过程达到热稳定状态的最终温度之间的比率。