AnUpdatedStructureforaStainlessSteelLinerandtheEstimationofitsBucklingStrength

AnUpdatedStructureforaStainlessSteelLinerandtheEstimationofitsBucklingStrength.pdf
StainlesssteellinerhasbeenusedforthetrenchlessrehabilitationofdamagedpipelinesinChina,butitslimitedbucklingstrengthseverelyconstrainsitswiderapplicationduetothelackofringstiffness.Theincreaseoflinerthicknesstosomeextentresultsinagreaterbucklingstrength,butstillunavoidablycausesahighercost.Withtheintentionofimprovingthestabilityofthethin-wallstructureaswellassavingprojectcostatthesametime,anupdatedstructure,consistingofnumbersofarchliners,wasintroducedinthispaper.Liketheconventionalcircularliner,archlinersarein-situmanuallyweldedtothehostpipetoformacylinder.Topredictthebucklingstrengthofrigidlyencasedarchliners,atheoreticalmodel,modifiedfromGlock'sbucklingmodel,wasalsoproposed,basedonwhichtheenhancementfactorKwasdefined.Withthistheoreticalmodel,aseriesofcalculationswasdonetodemonstratethearchliner'simprovedstability.Meanwhile,finite-elementmethod(FEM)wasusedtoestimatethebucklingstrengthofarchliners,andtheArc-LengthControlMethodwasappliedinthesimulationtotracethepre-andpost-bucklingbehavior.ComparisonbetweenthetheoreticalmodelandFEMresultswasperformedandtheexcellentagreementshowedthemodel'scorrectness.
作者：ShunDongWeiZhouHaifengZhangBaosongMa
作者单位：CollegeofEngineering,ChinaUniversityofGeosciences-Wuhan,No.388LumoRoad,Wuhan,HubeiProvince,China
母体文献：第九届管道工程与非开挖技术国际研讨会论文集
会议名称：第九届管道工程与非开挖技术国际研讨会  
会议时间：2018年10月24日
会议地点：武汉
主办单位：中国地质大学
语种：chi
分类号：
关键词：Stainlesssteelliner  Pipelinerehabilitation  Bucklingstrength  Finiteelementmethod
在线出版日期：2021年12月15日
基金项目：
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AnUpdatedStructureforaStainlessSteelLinerandtheEstimationofitsBucklingStrength.pdf

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