鲁宁管道打孔盗油管段应力现场测试  

Field Stress and Strain Testing on Damaged Pipe Segment in LuNing Oil Pipeline

作　　者：高安东[1] 杨占品[1] 王可中[1] 宋天博[1] 王福众[1] 仝兴华[2] 何利民[2] 薛世峰[2] 曹宇光[2] 

机构地区：[1]中国石化管道储运分公司,221008 [2]中国石油大学(华东)

出　　处：《油气储运》2009年第2期64-67,共4页Oil & Gas Storage and Transportation

摘　　要：针对管道盗油孔自身及其焊接修复时产生的残余应力以及修补结构应力集中降低管道承载能力的现状,对鲁宁管道某盗油管段在实际生产运营中的应力应变分布进行了现场测量。采用电阻应变测量法(电测法),对被盗管段应力应变分布的测试结果进行了分析,结果表明,对管体的强度进行评价时只考虑环向应力即可,盗油孔及其修补结构局部应力集中系数最大值为2.1。Oil-stealing orifice,residual stress by welding repair and the stress concentration by repair structures such as welding hats and welding sheets will lead to distinct decrease of pipelines to bear internal pressure.A field testing on the distribution of stress and strain over a service pipe segment in LuNing Oil Pipeline is made and an analysis to the distribution of stress and strain over the damaged pipe segment with resistivity stram measurement is conducted.Results show that it is enough to take the circumferential stress intoaccount when assessing the residual strength,and the max.stress coneentration value in oil-stealing orificeand welding repair location is 2.1.

关 键 词：输油管道 打孔盗油 残余应力 现场测试 结果分析 

分 类 号：O343.4[理学—固体力学] TU473.2[理学—力学]