埋地管道的抗震设计探讨（Studyonseismicdesignofburiedpipeline）

埋地管道的抗震设计探讨（Studyonseismidesigburie埋地管道的抗震设计探讨(StudyonseismicdesignofburiedPdfdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.InscriptionismandatoryDiscussiononseismicdesignofburiedpipelineAgasmetergaugedesigninstituteofcoalKeWiththerapiddevelopmentofeconomyinChina,thegasasenergystructureeconomic,convenientandsanitary,quicklyentertheChinesepeoplesothousandsofhouseholds,gaspipelineconstructionisimperativefromthegaspipelinegascoffintodowntownandtheareaoftheearthquakewillbehowthequakehit?ThispaperonthisissuearediscussedsoastoearthquakeinChengducityundergroundpipeline.Putforwardsomeopinions.CorpseThisforce,pipesshouldbeundertheactionofforcecouldsufferthiscity,:ThedamageofthepipelineismainlyduetothedeformationofthefoundationsoilAndbecausethestiffnessofpipeandsoilsaltjustissmallcomparedtoitintheearthquaketogethertofollowtheThelargerthedeformationofthefoundationsoil,theworsetheductthreeMoreDuetotheaboverawhideawayallourpipelineandsoilundertoolsetthesameverticalandhorizontalcanopyshapetheHungarian,TheharmofearthquaketoburiedIncaseofearthquake,thegroundmotionisirregularstring,andtheLsurfaceisFISexualXTheearthquakedamageofaburiedpipelineYinhastwokinds:onekindislostduetotheseriousseismicsoilstructure.Thewholephosphorusbad,andcontinuity,suchaslandslides,groundfissures,faults,slopeslideandsandliquefactionJanotherisduetoseismicwavepropagationinthesoil,SofsoildeformationIwrappedpipeproducedlargedeformationanddamage,thenthesoildidnotlosetheintegrityandcontinuity.Fortheformer,weshouldconsidertheplanandtherouteselectionoftheprojectandavoidthesesitesasfaraspossible.Otherwise,weshouldgivenecessaryresistancetothestructureofthepipelineY=Y.O2IICSU)one?...TY:groundtrendcurvealsoJiangZhenchi,X:horizontaldistanceThelongglasstransition^:earthquake;T:theinvisibleperiodofgroundmotionAnd=VTV:seismicwavewasP<,Huangs,thelongitudinalwavepropagationChandrashock.Forthelatter,theministersinvolvedinawiderange,Ihavedevotedspecialresearchtopics.BuriedpipesareoftenleftbehindinthepastmajorearthquakesThetypeofT(QtwoXiafter:O.2DDifferentdegreesofdamage,theUnitedStates,JapanandChinahavelongsincetheearthquakecausedtheburiedpipelinefailurerecords,sothedamageproblemforburiedpipelinemustAttachimportancetoandstudy.Y=1Y(1)cS.OneO2:oneby(divination...A^-^=,buriedpipelineseismiccalculationofactualmaterialsshowthatwhentheearthquakeoccurredwhenthepipeaxiscoincidewithseismicwavepropagationdirectioncoincidentpipelinewillappearaparticularlystrongshouldFormulak:y=)g.(BtypeK:withtheaccelerationofgravitygisasingleJ,too.;acceleration,seismicandgrainfraction.AccordingtoforeignmaterialarrowheadsSINOMOREYininthedepthofburiedpipelineOverthegroundmeltingJmeters,theseismicaccelerationeAccelerationvalue.Fromtheformula(style(knowable,verticalandhorizontalI),2KunStrainas:TImitationdidnotchangesignificantlysoitcanapproximatetovendE=[)3TAli."AInaddition,thetype(I):knowtwoLongitudinal.,Chu-.After.J"PI,HorizontaltSoneFromtheformula(style;(3)4)PAccordingtotheabovehypothesis,theeffectoftheearthquakeonthepipelineistoaddtheabovestraintothepipesothatthepipelinecanbemadeAdditionalseismicstressisgeneratedinsideTheshaftturnstoforceF.EE7"sShearstress:T=E.G==Gsn-LtypeE:modulusofelasticityofatubeVillage;G:shearmodulusofatubevillage.Onebyone)Theformulacanbeusedtocalculatethemaximum6Jaxialforceandmaximumshearstressofthepipe.TheneutralizationtypeVisthelongitudinalwaveandthepropagationvelocityofsacrossthefoundationsoil,andthenaturalperiodTandthelongitudinalwavevelocityVofvarioussoilsareverydiscrete,asshownintable1.CrosstheFromtheformula(youcangetthemaximumstressasfollows:5)Maximumaxialstress:m:"Silentshear...=ThespeedVisaboutIY.S-Table1naturalcyclesandlongitudinaltransitvelocitiesofvarioustypesofsubsoilToKishLoudon'tnaturalperiodT,secondlongitudinalspeedofV/secbyI<2>-0]~5~><ThesevenoreightandninedegreeearthquakescoresinourcountryareshowninTable2SeismicintensityTheintensityoftheearthquakeinChengduissevenFromtheabovedatacanbecalculatedfromthemaximumearthquakemaybeaffectedbyallkindsofroadpipetostress,table3outofthesevendegreeearthquakesituationofpipelineseismicstress.EarthquakescoresK01.Themaximumseismicstress(CKM)observedbythetubeduringthe3andsevendegreeearthquakesWhenthesaleofIJ"LeivillagehungrypasteIaysoilbud".TheamountofKAGtounderstandtheelastic1t.5*1'Day2XT'La.T'X1'It*1[J'sverticalsoil2mouth<T<Isoupbasesoil[l]grapefruit3.Sl,I~TLJg~'2^"MbasedNa>)t,2AoneA10)>1..>mouthHoldalongarmintothedeerK/N~10grI10.ThemysteryoftheP-waveandS-wavebasesoil,amountofThesoilmoisture,particlesize,densityandotherfactorsofthegroundsoilhavegreatdispersion.InsufficientButinessenceitdependsonthematerialTable4lists,allkindsofpipeShuyinglimitstrainmagnitudeeffectshuo.Table4ultimatestrainofvarioustypesoftubes(0)Xlpipes,steelpipes,plasticpipes,castironpipesTheaboveanalysisandpracticepointoutthat.ThedegreeofThefoundationsoilcategory,pipematerial,connectionformandsoonareallfromtheIPipelinefailurefactorsincludepipedrawing,cracks,cracks,compressiondeformationandsoon.Disastertesttable,inweakfoundationsoilorseriousunevenfoundationsoilpipelinedamageisserious,converselyThetwoisthesameJlightintensity,duetodifferencesinsoilandcanbemadeofdifferentgeologicalAilanthusisl0timesasmuchdamage,sothatsoilqualityofthebrokenpipeTheultimatestrain82L^Accordingtothecalculation,thegroundsoilofclassmissevendegreestothegroundThemagnitudeoftheearthquakeislessthan1*permagnitude,0Therefore,actiniumpipeandplasticcomainninedegreeswhenearthquakewillbebroken.Butthesteeltubeiseasytopoundandcorrosion,anditiseasytouseforalongtimeThedamageisgreaterattheweldorattheelbow.Therefore,doagoodjobofsteelBadeffectsaremuchgreaterthanintensity,anddifferentpipesareresistanttoextremestrainsThepowerofearthquakesisverybad.IsaidAnticorrosionpipeisanimportantmeasureofYizoneearthquake.Andfromtheseismicpointofview,thedevelopmentofplasticpipeistooPromising.Fromthepointofviewofthepipelinedamage,damageformofinterfaceofthepipelinearesignificantlyinfluencing,generalThedestructionofthepipelineismainlyduetothefactthatthepipeisunabletoresistthesoilThevibrationshouldbehandedin,sothematerialdamageisstrongSeismicperformanceshipofinterfacetoWeiinterface.soil:buriedpipelinesofgroundlikeearthtypefromSevendegrees,weshouldconsidertheseismicspan;1typesofgroundsoilandgroundITheTazishanpronetoinstabilityoflandslide.ChengduCitySoilSub-clayisdominant,becausesub-clayhasswellingandLandfissurespronetodifferentUndertheconditionofgoodstructure,theburiedpipelinecanstartseismicfortificationfromninedegreesofgood.TheItypefoundationsoilcanbeconstructedwithoutseismicresistanceevenundertheconditionofninedegrees.TheChengduareaiscurrentlyusedinthegaspipeline,fortheseismicperformanceofsteelpipeseamlesssteelpipeisverygood,buttomakethepipelineanticavetheweaklinkintheweld,aslongastheconnectiontostrengthentheearthquakeandotherequipmentForthecityofChengdu,intheeventofanearthquake,thecitygasThesystemisabletowithstandlossorlessdamageinthepresenceSetupabrigadeforearthquakeandInthenewdesignofburiedpipelines,weshouldpayattentiontothefollowingproblems:1.Firstly,attentionshouldbepaidtotheanticorrosionofburiedpipelines.Thepipecanbelongresistanttoearthquakebefore2.Accordingtothelimitstrainofplasticpipe(4),itissuggestedthatplasticpipesareadoptedinburiedpipelines.3,accordingtothepipediameterissmall,therootoflargeearthquakeloadruleproposedgassystemismainlydry,thepipediametershouldbegreaterthanorequaltoDIIstraighttubecourtyardisequaltoorgreaterthanNO;I5li.04,inordertoadapttothechangeofnoncomprehensiveearthquakeoccurredinthenewfoundation,eachpipelinedistanceshouldbeappropriatetoaskthecentraltelescopicjoint.Whenthefoundationischanged,animportantchannelthreeescape,fournearthejunctionwithstandpipeorYiYumeasurestheearthquakewilldiptoolargedecline.Three,theearthquakeburiedpipelinedesigninChengducityisthefocusofthenationalearthquakedisasterpreventiondesignofFangchengOneofthecity,thebasicintensityof7,thegroundsoilcategoryofmultidegreeofIandIII,sothedesignofburiedpipelinesmustconsidertheseismicfortificationofI.EachcityislocatedintheChengdu/Weibasineasternsidewithtectonicbelt,thenortheastandsouthwestrespectivelyPengxian-Dayi,Pujiang-XinjinmountainwhenChengduroadtwovoltfaultzone.Thereisnoseismicsourceinthevicinityofthecapitalcityanditsvicinity.ItismainlyaffectedbystrongearthquakesinthevicinityofXian,whichmayoccurduringanWehavefivekindsofbadPlacesshouldbeset,bothflexibleandTheearthquakeproofjoint.5,whenthefinesandfoundationhavelooseshfinesandfoundationwithhigherundergroundwaterlevelwhenthebearingcapacityincreasesasHusofoundation,providedtheconcretefoundationorbeproudofpilingfoundation.CracksintheSandliquefactionoccurred@thelocalgroundsubsidence;landslidejthesmall6,thelocallandslidegenerallyoccursattheweakThestrikeslipoftheearthcoreconsistentwiththefaultzone.TopreventdamageofthepipelinebecauseoflandslidescausedbydeformationshouldbeabovefiveinphasewithsulfonylbadphenomenonwhentheearthquakegroundZanwillcausetheseismicstressofburiedpipeline,thepipelineshouldbeundertheactionofforcemaysufferdamage."Accordingtothegeologicalandseismicdata,ChengduCity,westofthecityisaslowterrace,awizardcanfootliquefiedregionsofEasterntwoorthreeterraces,pronetocracksinthegroundAtelescopicjointisarrangedattheproperdistancebetweentheFujianandthefujian.1.ThisarticleiscontributedbyPdfdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.InscriptionismandatoryDiscussiononseismicdesignofburiedAgasmetergaugedesigninstituteofcoalWiththerapiddevelopmentofeconomyinChina,thegasasenergystructureeconomic,convenientandsanitary,quicklyentertheChinesepeoplesothousandsofhouseholds,gaspipelineconstructionisimperativefromthegaspipelinegascoffintodowntownandtheareaoftheearthquakewillbehowthequakehit?ThispaperonthisissuearediscussedsoastoearthquakeinChengducityundergroundpipeline.Putforwardsomeopinions.CorpseThisforce,pipesshouldbeundertheactionofforcecouldsufferthiscity,:ThedamageofthepipelineismainlyduetothedeformationofthefoundationsoilAndbecausethestiffnessofpipeandsoilsaltjustissmallcomparedtoitintheearthquaketogethertofollowtheThelargerthedeformationofthefoundationsoil,theworsetheductthreeMoreDuetotheaboverawhideawayallourpipelineandsoilundertoolsetthesameverticalandhorizontalcanopyshapetheHungarian,TheharmofearthquaketoburiedIncaseofearthquake,thegroundmotionisirregularstring,andtheLsurfaceisFISexualXTheearthquakedamageofaburiedpipelineYinhastwokinds:onekindislostduetotheseriousseismicsoilstructure.Thewholephosphorusbad,andcontinuity,suchaslandslides,groundfissures,faults,slopeslideandsandliquefactionJanotherisduetoseismicwavepropagationinthesoil,SofsoildeformationIwrappedpipeproducedlargedeformationanddamage,thenthesoildidnotlosetheintegrityandcontinuity.Fortheformer,weshouldconsidertheplanandtherouteselectionoftheprojectandavoidthesesitesasfaraspossible.Otherwise,weshouldgivenecessaryresistancetothestructureofthepipelineY=Y.O2IICSU)one?...TY:groundtrendcurvealsoJiangZhenchi,X:horizontaldistanceThelongglasstransition^:earthquake;T:theinvisibleperiodofgroundmotionAnd=VTV:seismicwavewasP<,Huangs,thelongitudinalwavepropagationChandrashock.Forthelatter,theministersinvolvedinawiderange,Ihavedevotedspecialresearchtopics.BuriedpipesareoftenleftbehindinthepastmajorearthquakesThetypeofT(QtwoXiafter:O.2DDifferentdegreesofdamage,theUnitedStates,JapanandChinahavelongsincetheearthquakecausedtheburiedpipelinefailurerecords,sothedamageproblemforburiedpipelinemustAttachimportancetoandstudy.Y=1Y(1)cS.OneO2:oneby(divination...A^-^=,buriedpipelineseismiccalculationofactualmaterialsshowthatwhentheearthquakeoccurredwhenthepipeaxiscoincidewithseismicwavepropagationdirectioncoincidentpipelinewillappearaparticularlystrongshouldFormulak:y=)g.(BtypeK:withtheaccelerationofgravitygisasingleJ,too.;acceleration,seismicandgrainfraction.AccordingtoforeignmaterialarrowheadsSINOMOREYininthedepthofburiedpipelineOverthegroundmeltingJmeters,theseismicaccelerationeAccelerationvalue.Fromtheformula(style(knowable,verticalandhorizontalI),2KunStrainas:TImitationdidnotchangesignificantlysoitcanapproximatetovendE=[)3TAli."AInaddition,thetype(I):knowtwoLongitudinal.,Chu-.After.J"PI,HorizontaltSoneFromtheformula(style;(3)4)PAccordingtotheabovehypothesis,theeffectoftheonthepipelineistoaddtheabovestraintothepipesothatthepipelinecanbemadeAdditionalseismicstressisgeneratedinsideTheshaftturnstoforceF.EE7"sShearstress:T=E.G==Gsn-LtypeE:modulusofelasticityofatubeVillage;G:shearmodulusofatubevillage.Onebyone)Theformulacanbeusedtocalculatethemaximum6Jaxialforceandmaximumshearstressofthepipe.TheneutralizationtypeVisthelongitudinalwaveandthepropagationvelocityofsacrossthefoundationsoil,andthenaturalperiodTandthelongitudinalwavevelocityVofvarioussoilsareverydiscrete,asshownintable1.CrosstheFromtheformula(youcangetthemaximumstressasfollows:5)Maximumaxialstress:m:"Silentshear...=ThespeedVisaboutIY.S-Table1naturalcyclesandlongitudinaltransitvelocitiesofvarioustypesofsubsoilToKishLoudon'tnaturalperiodT,secondlongitudinalspeedofVM/secbyPI<2>-0]~5~><ThesevenoreightandninedegreeearthquakescoresinourcountryareshowninTable2SeismicintensityTheintensityoftheearthquakeinChengduissevenFromtheabovedatacanbecalculatedfromthemaximumearthquakemaybeaffectedbyallkindsofroadpipetostress,table3outofthesevendegreeearthquakesituationofpipelineseismicstress.EarthquakescoresK01.Themaximumseismicstress(CKM)observedbythetubeduringthe3andsevendegreeearthquakesWhenthesaleofIJ"LeivillagehungrypasteIaysoilbud".TheamountofKAGtounderstandtheelastic1t.5*1'Day2XT'La.T'X1'It*1[J'sverticalsoil2mouth<T<Isoupbasesoil[l]grapefruit3.Sl,I~TLJg~'2^"MbasedNa>)t,2AoneA10)>1..>mouthHoldalongarmintothedeerK/N~10grI10.ThemysteryoftheP-waveandS-wavebasesoil,amountofThesoilmoisture,particlesize,densityandotherfactorsofthegroundsoilhavegreatdispersion.Inessence,itdependsonthelimitofmaterialTable4lists,allkindsofpipeShuyinglimitstrainmagnitudeeffectshuo.Table4ultimatestrainofvarioustypesoftubes(0)Xlpipes,steelpipes,plasticpipes,castironpipesTheaboveanalysisandpracticepointoutthat.ThedegreeofThefoundationsoilcategory,pipematerial,connectionformandsoonareallfromtheIPipelinefailurefactorsincludepipedrawing,cracks,cracks,compressiondeformationandsoon.Disastertesttable,inweakfoundationsoilorseriousunevenfoundationsoilpipelinedamageisserious,converselyThetwoisthesameJlightintensity,duetodifferencesinsoilandcanbemadeofdifferentgeologicalAilanthusisl0timesasmuchdamage,sothatsoilqualityofthebrokenpipeTheultimatestrain82L^Accordingtothecalculation,thegroundsoilofclassmissevendegreestothegroundThemagnitudeoftheearthquakeislessthan1*permagnitude,0Therefore,actiniumpipeandplasticcomainninedegreeswhenearthquakewillbebroken.Butthesteeltubeiseasytopoundandcorrosion,anditiseasytouseforalongtimeThedamageisgreaterattheweldorattheelbow.Therefore,doagoodjobofsteelBadeffectsaremuchgreaterthanintensity,anddifferentpipesareresistanttoextremestrainsThepowerofearthquakesisverybad.IsaidAnticorrosionpipeisanimportantmeasureofYiearthquakezoneearthquake.Andfromtheseismicpointofview,thedevelopmentofplasticpipeistooPromising.Fromthepointofviewofthepipelinedamage,damageformofinterfaceofthepipelinearesignificantlyinfluencing,generalThedestructionofthepipelineismainlyduetothefactthatthepipeisunabletoresistthesoilThevibrationshouldbehandedin,sothematerialdamageisstrongSeismicperformanceshipofinterfacetoWeiinterface.soil:buriedpipelinesofgroundlikeearthtypefromSevendegrees,weshouldconsidertheseismicspan;1typesofgroundsoilandgroundITheTazishanpronetoinstabilityoflandslide.ChengduCitySoilSub-clayisdominant,becausesub-clayhasswellingandLandfissurespronetodifferentUndertheconditionofgoodstructure,theburiedpipelinecanstartseismicfortificationfromninedegreesofgood.TheItypefoundationsoilcanbeconstructedwithoutseismicresistanceevenundertheconditionofninedegrees.TheChengduareaiscurrentlyusedinthegaspipeline,fortheseismicperformanceofsteelpipeseamlesssteelpipeisverygood,buttomakethepipelineanticavetheweaklinkintheweld,aslongastheconnectiontostrengthentheearthquakeandotherForthecityofChengdu,intheeventofanearthquake,thecityThesystemisabletowithstandlossorlessdamageintheForthepurposeofearthquakeresistance,weshouldpayattentiontothefollowingproblemsinthenewlydesignedburiedpipelines:1.First,attentionshouldbepaidtotheanticorrosionofburiedpipelines.Thepipecanbelongresistanttoearthquakebefore2.Accordingtothelimitstrainofplasticpipe(4),itissuggestedthatplasticpipesareadoptedinburiedpipelines.3,accordingtothepipediameterissmall,therootoflargeearthquakeloadruleproposedgassystemismainlydry,thepipediametershouldbegreaterthanorequaltoDIIstraighttubecourtyardi