大型储罐罐底及边缘板应力分析方法的对比  

Contrast of stress analysis methods for the bottom and annular plate of large-scale tank

作　　者：曲晓建 李玉坤[2] 段冠[2] 孙文红[2] 

机构地区：[1]中油管道廊坊投产运行公司,河北廊坊065000 [2]中国石油大学(华东)储运与建筑工程学院,山东东营257061

出　　处：《油气储运》2011年第12期919-922,6,共4页Oil & Gas Storage and Transportation

摘　　要：储罐的大型化为石油储备建设节约了投资,但对储罐设计提出了更高要求,其中储罐罐底大脚缝处的应力最大,是整个储罐的薄弱环节。研究大型储罐罐底及边缘板应力分布规律,对确保储罐的设计安全有重要意义。对比分析了3种大型储罐罐底及边缘板应力的理论计算方法,认为弹性-刚性地基梁耦合法的计算结果更合理。将理论计算结果和ANSYS有限元数值模拟结果与实际测量结果进行比较,结果表明:两种方法的计算结果均合理可靠,而有限元数值模拟结果可为设计人员全面了解储罐的结构安全性提供参考。For the large-scale tank,the max stress is near the corner(lower node)of connecting tank skin to the bottom,which is the weakest part of the whole tank.Three methods in the stress calculation for a bottom plate and edge plate of large-scale tank are contrasted.And it is found that the elastic-rigid foundation beam method is more reasonable among the methods.ANSYS software is used to do numerical simulation,and among the compared results of theoretical values,the numerical value and measured data,theory method and the finite element method are reasonable and reliable.It is concluded that the result by the finite element numerical simulation can provide a reliable validation in the design of large-scale tank,which is helpful for the designers to understand comprehensively the structural safety of tank.

关 键 词：大型储罐 有限元 弹性地基 数值模拟 

分 类 号：TE82[石油与天然气工程—油气储运工程]