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基于弹性分析法的大型储罐罐壁应力计算
李玉坤¹,孙文红¹,段冠²,赵宏宁³
(1.中国石油大学储运与建筑工程学院，山东青岛266580 ;2.海洋石油工程有限公司，山东青岛266520;3.中国石油集团工程设计有限责任公司北京分公司，北京100085)

摘要:

运用短岡柱壳挠曲线微分方程,基于变形光滑连续条件,建立用于计算大型储罐罐壁应力的弹性分析法力学模型,推导阶梯厚度壳轴向应力的计算公式，得到洋细的计算过程。采用此方法,以容积为丨5xi04 m³大型储罐为算例进行验算，并对有限单元法数值计算结果和现场实测数据进行对比。结果表明，该方法能够较精确地汁算罐壁应力，可以为罐噔设计与校核提供参考。

关键词: 大型储罐弹性分析法应力计算短_柱壳

DOI：10.3969/j.issn.1673-5005.2012.03.028

分类号::TE 972

基金项目:中M石油大学(华东)自主创新科研计划项目] (10CX0403IA)

Stress calculation for shells of large storage oil tank based on elastic analysis method

LI Yu-kun¹,SUN Wen-hong¹,DUAN Guan²,ZHAO Hong-ning³

(1. College of Pipeline and Civil Engineering in China University of Petroleum, Qingdao 266580, China;2. Offshore Oil Engineering Company Limited, Qingdao 266520, China ;3. Beijing Branch Company^ China Petroleum Engineering Company Limited，Beijing 100085, China)

Abstract:

Based on continuity and smoothness conditions of deflection on shell t the mechanical model was established using elastic analysis method for calculating shell stress distribution of large storage tank. The formulas for calculation of hoop and axial stress on stepped thickness shell were deduced by using deflection differential equation of short cylindrical shell. Taking a lank with volume of 15xl04 m³ for example, the detailed calculation process of tank shell was provided based on elastic analysis method. Compared the finite element method calculation results with the testing data, the feasibility and effectiveness of the method were verified. The results show that the method can accurately calculate the stress on lank wail, and can provide a reference for the design and checking of the tank wall.

Key words: large storage tank elastic analysis method stress calculation short cylindrical shell