套管修复轴向穿透裂纹管道极限载荷研究  

Limit Loads for Axial Through-wall Crack Pipe Repaired by Sleeve

作　　者：喻健良[1] 董硕 朱奕漪[3] 李宁[1] 秦磊[1] 

机构地区：[1]大连理工大学化工学院,辽宁大连116023 [2]中国昆仑工程公司,北京100037 [3]中南大学材料学院,湖南长沙410083

出　　处：《石油化工设备》2010年第6期7-10,共4页Petro-Chemical Equipment

摘　　要：利用套管包覆缺陷是修复缺陷管道常见的方法之一。利用弹塑性有限元分析方法,对用套管修复轴向穿透裂纹管道的结构进行了有限元计算。采用极限载荷系数p衡量结构的极限承载能力,对其影响因素进行了研究。研究结果表明,p与套管位置有关,p随套管壁厚和套管宽度的增加而增加。给出了不同形式下套管修复轴向穿透裂纹管道的推荐参数,可为工程实际应用提供一定的支持。Using sleeve to repair pipe crack is one of the most common means.The elastic-plastic finite element method was applied to analyze the structure of the sleeve covered pipe having axial through-wall crack.The limit load factor p,which was used to describe the ultimate bearing capacity was studied.The results indicated that p subjected to the sleeve location,and was increased when the sleeve width and thickness became larger respectively.Recommended parameters of sleeve are given for practical application.

关 键 词：管道 轴向穿透裂纹 极限载荷 套管 有限元 

分 类 号：O346[理学—固体力学]