基于管道爆破试验对ASME B31G标准中相关参数的修正  

Modification of the Relevant Parameter of ASME B31G Standard Based on Pipeline Blast Test

作　　者：宋旭[1] 张振文[2] 闫琳[1] 张建勋[1] 

机构地区：[1]西安交通大学材料科学与工程学院,西安710049 [2]中国石油长庆油田分公司第一采气厂,陕西靖边719000

出　　处：《焊管》2008年第1期84-87,共4页Welded Pipe and Tube

基　　金：中国石油天然气股份有限公司长庆分公司科技发展资助项目

摘　　要：ASME B31G标准是针对含体积缺陷压力管道进行剩余强度评价的标准。运用此标准对陕西靖边地区天然气集输站在役管道进行了剩余强度的计算,针对B31G标准计算的剩余强度相对水压爆破试验结果过于保守的问题,考虑到B31G标准的适用范围,从Mises等效应力和流变应力两个方面对B31G标准计算方法进行了修正。结果表明,修正后的评价结果更接近试验结果,降低了原标准的保守性,同时又能保证一定的安全裕度。Standard of ASME B31G is such a standard to evaluate residual intensity of pressure pipeline which containing volume defect and this article apply this standard to calculate the residual intensity of existing pipeline of nature gas central gathering station in Jingbian area,and also modify calculation method in ASME B31G from two aspects of mises equivalent stress and flow stress aiming at the conservative test result in comparison with hydraulic pressure blast test,and considering the application scope of the B31G standard.All results shown that the modifying result is more close to testing result, and reduce the conservatism of original standard,as well guarantee definite security scope.

关 键 词：石油天然气管道 ASME B31G 剩余强度 流变应力 等效应力 

分 类 号：TG405[金属学及工艺—焊接]