钢质环氧套筒修复补强管道在内压作用下的环向应力计算  

Circumferential Stress Calculation of Steel Epoxy Sleeve Repair Reinforcement Pipe under Internal Pressure

作　　者：王尊勇 孔吉民 贾彬[1] 朱立 谈玉同 候建明 WANG Zunyong;KONG Jimin;JIA Bin;ZHU Li;TAN Yutong;HOU Jianming(Institute of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621000,Sichuan,China;Pipechina West-East Gas Transmission Company,Yinchuan Gas Transmission Branch,Yinchuan 750001,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621000 [2]国家管网集团西气东输公司银川输气分公司,银川750001

出　　处：《焊管》2022年第2期19-24,31,共7页Welded Pipe and Tube

基　　金：国家重点研发计划—重大科学仪器设备开发专项“深海油气管道内外检测与故障诊断装备开发与示范应用项目”(项目编号2017YFF0108800)。

摘　　要：为了得到钢质环氧套筒修复补强管道在内压作用下的环向应力计算公式,根据内压作用下钢质环氧套筒修复补强管道的受力特点,建立了对应的力学分析模型,基于厚壁圆筒的应力解法和变形协调关系得到了内压作用下管道、环氧树脂胶层和钢套筒的环向应力理论公式,并通过试验对理论公式进行验证。结果表明,在不同内压作用下理论值与试验值的误差均在20%以内。该结果可以为内压作用下钢质环氧套筒修复补强管道的设计分析提供参考。In order to obtain the circumferential stress calculation formula of steel epoxy sleeve repair reinforcement pipe under internal pressure,according to the stress characteristics of steel epoxy sleeve repair reinforcement pipe under internal pressure,the corresponding mechanical analysis model was established and based on the stress solution method and deformation coordination relationship of thick-walled cylinder.The theoretical formula for the circumferential stress of pipe,epoxy resin layer and steel sleeve under internal pressure is obtained.The theoretical formula is verified by experiments,and the error between the theoretical value and the experimental value is within 20%under different internal pressures.The research results can provide reference for the design and analysis of steel epoxy sleeve repair and reinforcement pipe under internal pressure.

关 键 词：钢质环氧套筒 管道 修复补强 环向应力 内压作用 

分 类 号：TE973.8[石油与天然气工程—石油机械设备]