偶然荷载工况作用下大型液化天然气储罐的结构分析是大型LNG储罐技术研发的重要组成部分,而目前偶然荷载工况的荷载取值无据可依。本文针对这一问题,参考了欧洲标准、美国规范以及建筑荷载规范中的相关规定,指出了偶然荷载工况作用下所需考虑的荷载类型,并提出了具体可行的荷载组合公式,以服务于国内大型LNG储罐的开发和设计工作。 The structural analysis of large LNG storage tanks under accidental load conditions is an important part of the research and development of large-scale LNG storage tanks. However, the load values ​​of accidental load cases are not based on any available data. Aiming at this problem, this paper refers to the relevant provisions of the European Standard, the American Code and the Code of Construction Load, points out the types of loads to be considered under the occasional load conditions, and proposes a concrete and feasible load combination formula to serve Large domestic LNG storage tank development and design work.