進出站管線系統(tǒng)沉降應力測試與分析

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Stress Test and Analysis for Inlet and Outlet Pipeline System of the StationUndertheFoundationSettlement

LINRuinan1*，YANG Hong1，MAO Xuebin1，HUANG Zhonghong2， ZHANG Wen1

1.Gas ManagementOffice，PetroChina SouthwestOil& GasField Company，Chengdu，Sichuan 6lO213，China 2.College ofSafetyandOceanEngineering，China UniversityofPetroleum（Beijing），Changping，Beijing02249，China

Abstract：The foundationsetlement easilyleads tote stressconcentrationand excessivedeformationofthe inletandoutlet pipelinesystemofthenaturalgasstation，andinseverecases，thepipelinemaybedamaged.Tothisend，atestplatformfor setlementstresstestingofnaturalgasstation inletandoutletpipelinesystemincluding2typicalstructuresofinletandoutlet lines，ventpipeandteepipelineasbuilt.Stresstestsofdiferenttypesofpipelinesunderfoundationsetlementwerecaried out.Basedonthetestplatform，thethre-dimensionalmodeloftheinletandoutletpipelinesystemofthestationwas established toanalyze theinfluenceof internalpressureanddiameterthickness ratioonpipeline stress.Theresultsshow that：the most seriousbendingdeformationoftheinletandoutletlineI（buriedmanifolddistributionstructure）ocursatthegroundelbowand thefixed positionofthesupport，andthemaximumtensilestressandcompressivestressofteinletandoutletlineI（Z-saped structure）arebothatthereducing teeofthepipe，thestressoftheinletandoutletlineIIissmalerthan thatofthe nletand outletlineIunderthesamesetlementconditios;Whenthepierinthemiddleofthetepipelinesettes，andthestressofthe pipelineattheinnersideofthefixedsupportsatbothendsandthesetlementpointfarfromthetee increasessignificantlywith thesettement;Whentheground-entryendoftheventpipesetles，andtheverticalsectionoftheground-entryendhasthemost serious deformation，andthe joint sectionbetween theventpipeand the main pipelinereceives the greatest stress.Reducing pipediameter thicknessratioandoperating internal presurecanreduce theequivalenttressduringsettlementand improve the pipelinesafety.Theresearchresultsprovideatechnicalbasis forthesafetyassessment，teselectionofstressmonitoringponts and the settlement warning of the inlet and outlet pipeline system in natural gas station.

Keywords：naturalgasstation;foundationselement;inleandoutletpipelinesteofthesation;stresstest;tresalyis 網(wǎng)絡(luò)出版地址：http：//kns.cnki.net/kcms/detail/51.1718.TE.20241230.1331.002.html

引言

站場作為天然氣輸配系統(tǒng)的重要節(jié)點，承擔著天然氣增壓、分輸及配氣等功能，其安全問題顯得尤為重要[1-5]。（剩余17207字）