螺旋焊管与直缝焊管裂纹断裂分析  

Fracture Analysis on the I/II Mixed Cracks between Spiral Welded Pipe and UOE Welded Pipe

作　　者：董绍华[1] 吕英民[1] 

机构地区：[1]石油大学(北京)机电工程学院

出　　处：《油气储运》1999年第12期24-27,共4页Oil & Gas Storage and Transportation

摘　　要：根据最大拉应力理论,分析了焊管在受内压及残余应力的作用下,焊缝区Ⅰ/Ⅱ混合型裂纹开裂角θ_0与裂纹角β的关系,并分析了具有不同裂纹缺陷时,螺旋管与直缝管的断裂破坏强度。Based on the maximum tension stress,the paper analyzed the cracking angle θ0 and crack angle β of I/II mixed cracks at weld zone with pipe loaded by pressure and residual stress,and discussed the advantages and disadvantages of fracture strength between spiral welded pipe and UOE welded pipe under different cracks flaw.

关 键 词：螺旋焊管 裂纹 断裂 长输管道 焊接 油气管道 

分 类 号：TE973.3[石油与天然气工程—石油机械设备]