大型立式储罐风致静力屈曲分析  

Buckling Analysis of Large Vertical Type Storage Tank by Static Wind Load

作　　者：魏化中[1] 张占武[1] 丁克勤[2] 舒安庆[1] 

机构地区：[1]武汉工程大学机电工程学院 [2]中国特种设备检测研究院

出　　处：《化工装备技术》2012年第6期8-12,共5页Chemical Equipment Technology

摘　　要：利用ANSYS特征值屈曲分析对四种径高比(D/H)的浮顶油罐进行风压局部侧向失稳研究。以10万m3储罐为例,考虑储罐的圆度缺陷,进行了非线性屈曲分析和抗风设计。结果表明:大型储罐随着径高比的增加局部屈曲临界压力下降,其大小主要取决于上层圈板的厚度;进行抗风设计对提高储罐临界压力作用明显;随着圆度的增加,屈曲临界压力随之下降;非线性屈曲分析比特征值屈曲分析对圆度缺陷敏感度更高。This paper analyzed the local wind load lateral buckling problems of floating roof tanks with four different diameter height ratios （D/H） using ANSYS eigenvalue buckling analysis. Considering the ellipticity defect wind force proofing design and nonlinear buckling analysis were proceeded taking the 100,000 m^3 storge tank as an example. The results showed that the buckling critical pressure fell along with the increase of diameter height ratio, and it mainly depended on the thickness of upper girth sheets. It＇s obvious to enhance the critical pressure by force proofing design. The buckling critical pressure became small following the ellipticity＇s increase. Nonliear buckling analysis was more sensitive to ellipticity defect compared to eigenvalue buckling analysis.

关 键 词：大型储罐 风压失稳 特征值屈曲分析 圆度 压力容器 

分 类 号：TE972[石油与天然气工程—石油机械设备]