钢制矩形容器加强筋开裂失效原因分析.pdf

第43卷第5期
石油化工.设备
Vol 43 No 5
2014年9月
PETRO-CHEMICAL EQUIPMENT
Sept 2014
经验交流
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文章编号:1000-7466(2014)05-0092-05
钢制矩形容器加强筋开裂失效原因分析
刘江歌',吕春晓2,宮君
(1.中海油能源发展股份有限公司油田建设工程公司,天津300452;
2.海洋石油工程股份有限公司,天津300452;
3.川庆钻探工程有限公司长庆钻井总公司,陕西西安710018)
摘要:针对某钢制矩形容器在试压过程中出现加强筋开裂失效的现象,从该设备设计时的材料选
用、制造过程中的异种钢焊接和产品质量控制等方面进行了分析,同时应用有限元软件 ANSYS进
行了具体的分析设计计算。结果表明,该罐体加强筋对接处未接设计图样要求进行开坡口的全熔
逶焊接是造成在试压过程中出现加强筋开裂失效的主要原因。根据分析设计计算结果,试验工况
下最大变形量和最大应カ与最大允许値比較接近,说明此部位需进行加强,以避免由于局部应力过
大而导致设备发生失效。
关键词:钢制矩形容器;加强筋;开裂失效;异种钢焊接;分析;设计
中图分类号:TQ053.2
文献标志码:B
doi:10.3969/j.issn.1000-7460,2014.05.021
Crack Failure Analysis of Steel Rectangular Tank Stiffener
LIU Jiang-ge, LU Chun-xiao, GONG Hui-jun
(1. CNOOC Energy Technology & Services-oilfield Construction Engineering Co.
Tianjin 300452, China; 2, Offshore Oil Engineering Co. Ltd, Tianjin 300452, China
3. Chuanqing Drilling Engineering Company Limited Changging General
Drilling Company, Xi'an 710018, China)
Abstract: For the situation that the steel rectangular tank's stiffener in a project was cracking
during hydraulic test, firstly the analysis was carried out in three aspects: material chosen during
designing, dissimilar steel welding during fabrication and quality control during inspection. And
then the detailed analytical calculation was applied using the ANSYS software. The result shows
that stiffeners' welding was non-full penetration weld, and not according to the construction
drawing, which was the main cause for crack failure of steel rectangular tanks stiffeners. Ac
cording to the result of analytical calculation, when the maximum deformation and maximum
stress is close to the maximum allowable value under test condition, measures should be taken te
reinforce the corresponding position. Otherwise the local stress is so large that the tank failure
will occur
Key words: steel rectangular tank; stiffener, crack failure; dissimilar steel welding; analysis;
design
收稿日期:2014-04-19
作者简介:刘江歌(1981-),女,河南巩义人,工程师,硕士,从事海洋平台模块机械设计工作。