电力设施抗震设计规范 GB 50260-2013 （英文版）

ThisCodeispreparedbyNorthwestElectricPowerDesEngineeringConsultingonPrintingandDistriConstructionofYr.2004"(JB〔2004〕No.67)issuedbytheformerMinistryofConstructionofthePeople'sRepublicofChina.Duringtherevision,therevisionpaThisCodeisorganizedintoeightchapters,Site,SiteSelectionandGeneralArrangement,SeismicActionforElecFacilities,BuildingsandStructuresinThetechnicalcontentsinvolvedinthisrevisionma2.TheapplicablescopeofthisCodeisrevised;DesignofBuildingsGB50011-2010,andtheseismicinfluencecoefficientismod4.Morespecificrequirements/areputamplificationfactorofsupport,combinationofloadeffects,seismi5.Seismicisolationandenergydissipationdesignof6.Requirementsforlayoutofthereinforcedcoappropriately,andlimitationsonparticularlyirregularlayoutareprobetweenthegalleryandneighboringbsupplemented;andthedesignprinciplesoftowerssu7.TheseismicdesigncriteriafoInthisCode,thearticlesinboldtypearecompulsorThisCodeisadministeredbyMinistryofHousingandUrban-RRepublicofChinawhichwillberesponsiblefortheinterpretationofcominaElectricityCouncil.AndNorthwfChinaPowerEngineeringConsulissuestherein.DuringimplementationofsummarizetheexperiencesandcollecttherelevantinformatmereferanycommentsandsuggestionstoNorEngineeringConsultingGroupattheaddress:No.22DevelopmentZone,Xi'an,Postcode:710075,forreferenceinthefhiefdevelopmentorganization,participatingdevelopmentorganizations,chiefdraftingstaffdchiefreviewingstaffofthisCode:ChiefDevelopmentOrganization:NorthwestElectricPowerDesignInstituteofChinaPowParticipatingDevelopmentOrgaInstituteofGeophysics,ChinaEarthquakeAdministraInstituteofEngineeringMechanics,ChinaEarthquakeAdminiZhengzhouResearchInstituteofMechanicalENorthChinaPowerEngineeringCo.,Ltd.ofChinEastChinaElectricPowerDesigXi'anXDSwitchgearElectricCo.,Ltd.ChiefDraftingStZhangXiaojiangLiuMingqiuZhuXiaoliLinNaLiXiaojunLiuYuminDaiZebingXieQiangZhaZhaoJishengLiuQifangPYuMingxingTangXiJiaChengTongJianguoZhangFengmiLiuXihuiYaoDekangLiuHCaoMeigenYouHongbingZhaoFengxinDuJipingLiuKXiaYingpuZhongXiyueZhouYuZhangRunmingZhangXijieGuPihuaYanGuanxingJiangTaoZhangZipingZ ListofQuotedStandards 1.0.1ThisCodeisdevelopedinaccordancewiththProtectingAgainstandMitigatingEarthquacombinationofpreventionandrelief",withaviewtominimizingearthquakedisastersinstallations,preventingpersonalinjuryanddeath,andreducin1.0.2ThisCodeisapplicabletotheseismicdesignofthefolloexpandedormodified1Electricalinstallationsinfossil3ElectricalinstallationsinACtransmissionprojectswithavolta4Electricalinsta5Powersystemcommunicationmicrowavetowersandtheir1.0.3Newlybuilt,modifiedandexpandedelectrseismicprecautionaryintensityofthintensitygreaterthantheseismicprecautionaryintensityofthelocalarea.1.0.5Forstructuralmembersofbuildings(structures)faccordancewiththisCode,theyshallnotbedamagedorshafrequentearthquakewithanintensitysmallerthantheseismicprecaufthelocalarea;theymaybedamagedbutcanberestoredtonormalservrepairintheeventofanearthquakewithanintensityequaltotheseismicprecautionaryinlocalarea;theyshallnotcollapsearthquakewithanintensityhigherthantheseismicprecautionaryintensityoft1.0.6Electricalimportanceandcharacteristicsofseismicprotection,andshallcomplywiththefollowinsilfuelpowerplantwithaunitcapacityof300MWandabof2)Captivepowerplantofin3)Hydropowerplantwithadesigncapacityof750MWandabove;5)Powersystemcommunicationfacilitiesthatshearthquakeasapprovedbythecompeten2Electricalinstallationsotherthanimportanton1.0.7Buildings(structureimportanceandshallcomplywiththefollowingprgoryBismajorseismicprecautionarycfpowerplantsandpowersupplybuildings(structures)oftransmissiasimportantelectrical2CategoryCisstandardseismicprecautionaryofcommonelectricalinstallations,buildings(structureaswellaspublicbuildings(structures)andimportantmateotherthanCategoryBandCategoryCbu1.0.9TheseismicprecautionaryintensityorgroundmotionparametersofelZonationMapofChinaGB18306.Forsitesonwhichseismicsafetyevaluationhasbeenmadrelevantprovisions,seismicprotectionshallbemadeinlinewithapproveddesigparametersorcorresponexceptthattheseismicprecautiona1.0.10Theseismicprecautionarycriteriaforbuildings(structures)ofvariousseismic1.0.11Theneedforadoptforimportantlarge-crossingtowersandfoundationsofoverheadtransmissionlinesshallbexpertsandsubjecttoapprovalbythesdditiontothisCode,theseismf2.1.1SeismicprecautionaryintensTheseismicintensityapprovedbythenaea.ItisgenerallytakenastheseismicintensitywithaprobafAnareawhereaprojectclusterisloisequivalenttothatofaplantarea,residentialarea,naturalvilDynamicactionofstructureinducedbactionandverticalearth2.1.4DesignbasicaccelerTheaccelerationofgroundmotionwithaprobabilityreferenceperiod,takenasthedesignaccelerationofgroundmotioningeneralconstructionprojects.2.1.5Designcharacteristicperiodearthquakemagnitudeusedforseismicdesign,abbreviatedascharacteristicperioVariousdetailsrequiredforvariousstructuralandnon-structuralpartswhiaccordingtoseismicconceptdesignprinciplesThefreevibrationfrequencdamping)ofthestructure.ThecurveofaphysicalqurespectivelyreferredtoastheaccdisplacementtimehistContinuoussinusoidalwaveofonefrequencywhichismodulatedbyasinusoidfrequency.Thedurationofonesinebeatishalftheperiodofthemodulatingfrequency.Fj——characteristicvalueofhorizontalearthquakeactionofthemasspointiunderthevibrationFek——characteristicvalueoftF——characteristicvalueofhorizontalearthquakeactionofmasspointi;Fₙ——additionalhorizontalearthquakeactiononG;,G——representativevalueofgravityloadsconcentratingonmasspointiandjrGe——representativevalueofequivalenttotalgravityloadsofstructure(equipment);SE——earthquakeactioneffect(beS——fundamentalcombinationofearthquakeactioneffectandotheS;——horizontalearthquakeactioneffectunderthevibrationmodej;N——axialforce;V——shearforceinducedbyearthquake2.2.2ResistanceandmaE——elasticmodulusofceramicbushing;K.e——bending-resistancerigidityR——designbearingcapacityofstructure(equipment)members;K——rigidityofstructure(equipment)member0v——failurestressofequipment2.2.3Geometricalh——heightofcalculatedsectionfroH,H,—effectiveheightatmasspointsiandjrespectively;I.——inertiamomentofsection;d.——outerdiameterofceramicbushingatthecementingposition;L——lengthofbeam;ζ——dampingratioofstructη——adjustmentfactoroftheslopeofthelinearT=0.0.40αmaxcorrespondstoadynamicmagnificationfactorofrigidstra——horizontalaccelerationofgroundmotiontimehistory;as——maximumhorizontalaccT——naturalperiodofvibrationofsystem(structure);f——fundamentalfrequencyofsystemTp——timeintervalbetweenX,——relativehorizontaldisplacementofmasspointiinXdirectionunderthevibrationmodej;Y,——relativehorizontaldisplacementofmasspointiinYdirectionunderthevibrationmodej.3.0.1Projectsitescanbeclhazardoussitesinaccordancewiththecu3.0.2Projectsitesshallbeclassifiedbytheequivalent3.0.3ThemeasurementofshearwavstandardCodeforSeismicDesignofBuildingsGB500Determinationoftheoverburdendepthofsitashearwavevelocityofmorethan500m/sandbelowwhichtvelocitymorethan2.5timesthatofeachoverlayinglayer,andthesheaandofeachunderlying3LonetonesandlenticleswithashearwavevelocichardinterlayerinthesoillayershallberegardedasrigfWhere,vse——equivalentshearwavevelocityofsoillayer(m/s);do——calculationdepth(m),takenastheoverburdendepthort——durationoftransmissionofshearwavefromthegroud——thicknessoftheitsoillayerwV₃——shearwavevelocityoftheihsoilln——numberofsoillayerswith3.0.6Projectsitesshallbeclaswavevelocityofsoillayerandoverburdendepthofsite,amongwhich,typeIcanclassifiedintosubtypesIofsiteisavailable,andthevaluesarecallowedtousetheinterpolationmethodtodeteⅡⅢ一一一一一一一一一3.0.7Intheeventofseismogenicfaultedandcomplywiththecurrentnatfisolatedmountain,steepslopeofnadditiontoensuringthestabilityundertheearthquakeaction,thepossiunfavorablesitesonthedesigngroundmotionparametersshallbgroundmotionparametestandardCodeforSeismicDesignofBuildingsGB500Geologicalsurveyofsitesshalldeterorhazardous),andprovidetheevaluationresultsoftheoverburdendepth,shearwavevelocitysoillayer,andseismicstability(landslide,collapse,etc.)ofrocksoilinthecaseofaliquefiedfoundatprovisions.areas;ifimpossible,effectiveseismicmeasuresshallbetaken.Hazardousareassh4.0.2Powerplantsshouldnotbebuiltinanareawithaseismic4.0.3Therailwaysandroadwaysofpowerplantsoraccessroadsofshazardousareaswherecollapse,widespreadlandslide,debrisflow,groulikelytooccurintheeventofearthqu4.0.4Majorproductionbuildings(structures)andequipmentofelectricalin.0.5Whenelectricalinstallationsarersideslopewithaheightofmorethan8m,thedistancebetweretainingwallorsideslopeshpreparationandstorageworkshopspfpowerplantsshouldbearrangedinar4.0.7Theundergroundpipesandtrenchesinsidepodistributedmanner,andshouldnotbearaseismicprecautionaryiofundergroundpipesandtrenchesshallbemadeontheground.4.0.8Thepipes,trenches,andtrestlesoutsidepowerplantss4.0.9Denselypopulatedbuildingsinpowerplants,suchasthelaboratorybuilding,andcanteen,shallbeprovidedwithasafetypassageroadsrespectivelyatentranceandexit,andwithashel4.0.10Thedistancebetweenroadedgesandbuildings(structures)inpowerplantsshallbe4.0.11Thebasicbenchmarksofpowerplants1Theseismiccalculationofelectricalfacilitiesshearthquakeactionsinatleasttwohorizontalaxisdirecti2Forstructureswith3Whentheseismicprecaution5.0.2Theseismicanalysisforelectricalfacilitiesmaybepbaseshearmethod,modeanalysisresponsespectrummethod,ortimehistoryanalysismetho5.0.3TheseismicrelevantrequirementsofthecurrentnationalstandardSeismicGroundMotiZonationMapofChinaGB18306,siteclassification,naturalperiodofvibration,dampingratio,Table5.0.3-1basedonthedesignbasicaccofgroundmotionshallbetheseismicpeakgroundaccelerationattheplacewhefacilityislocatedacco677889Maximumvalueofeart2ThecharacteristicperiodofhorizGroundMotionParametersZonationMapofChinaGB18306,andissubjecttoadjustmentbasedonthesiteclassification.Alternatively,itmaybedeterminedaccharacteristicperiodisincreasedby0ⅡⅢVIⅡⅢ5.0.5Theshapeparameterofs1ForClassⅡsite,theshapepaction(Figure5.0.5)shallbecalculatedinaccordancewiththefollowi1)Linearincreasesection:w3)Curvilineardecreasesection:whoseperiodisfromthecharcharacteristicperiod;Where,α——seismicinfluencecoefficient;αmax——maximumvalueofseismicinfluencecoefficiT——naturalperiodofvibrationofstructure;ζ——dampingratioofstructurη1——adjustmentfactoroftheslopeoflineardecreasesection.Whenthecalculatedvaη2——adjustmentfactorofdamping.Whenthecalculatedvalueofη₂<0.55,n2shallbe2Forsitesofotherclasses,theshapeparameterofseismicinfluencecoefficieα——seismicinfluencecoefficientcalculatedaccordingtoFormula(5.0.73——SiteadjustmentfactorforthemaximumⅡⅢ5.0.6WhenbaseshearmethodisusedtocalculatethehoricharacteristicvaluesofthetotahorizontalearthquakeactionatvariousmasspointscalculatedusingthefollowingforWhere,Fek——characteristicvalueoftotalhorizontalearthquakea₁—horizontalseismicinfluencecoefficientcorrespondingtothenaturalperiofstructure,whosevalueshallbedeterminedaccordingtoArticle5.0.5ofthisCode;Ge₄——equivalenttotalgravityloadofgravityloadforstructureswithsinglemasspointanftherepresentativevalueoftotalgravityloadfor2ThecharacteristicvalueofhorizontalearWhere,F——characteristicvalueofhorizontalearthquakG₁,G;——representativevalueofgravityloadatmasspointsiandj;H,H,——calculationheightofmasspointsiandj;δn——additionalearthquakeactioncoeffic一0一3TheadditionalhorizontalearthquakeactionattopofWhere,△F。——additionalhorizontalearthquakea5.0.7Whenmodeanalysisresponsespectrummethodisadopted,thenensurethattheparticipatingmassisnotlessthan90%ofthetotalmass.Theearthqu1ThecharacteristicvalueofthehorizontalearthquWhere,F,——characteristicyalueofhorizontalearthquakeactionatmasspointiofthejtvibrationmode;a——horizontalseismicinfluencecoefficientcorrespondingtothenathejmode,whosevalueshallbedeterminedinaccordancewiy;——participationcoefficientofthej"mode;X,——horizontalrelativedisplacementofmasspointiofthejmode;G——representativevalueofthegravityloadatmasspointi,includingalldeadloads,g2Whentheperiodratioofadjac(bendingmoment,shearforce,axialforceanddeformation)ofeaWhere,SEk——horizontalearthquakeactioneS;——horizontalearthquakeactioneffecto3Whentheperiodratioofadjacentmodesisgreaterthan0.9,thehorizontalearthqueffect(bendingmoment,shearforce,axialforceanddeformation)ofζ,k——dampingratioofthejandk"Pk——couplingcoefficientbetweenthejandkmodes;λ——ratioofthenaturalperiodofvibr6.1GeneralRequi6.1.1Theseismicdesignof1Forelectricalfacilitiesofimportantelectricalinstall2Forelectricalfacilitiesofcommonelectricalinstallations,seism3Forelectricalfacilitiesinstaoutdoors,seismicdesignshallbeperformedwheseismicprecautionarydeformationorequivalenttoa3Themodeanalysisresponsespectrummethodsho4Forelectricalfacilitieswhichareespeciallyirregularor6.2.2WhenthestaticmWhere,M——bendingmomentinducedbyearthquakeaction,kN·m;Geq——representativevalueofequivalenttotalgravitH₀——heightofgravitycenterofelectrih——heightofcalculatedsectiWhere,V——shearforcedesign,itshallcomplywiththerelevantprovisionsinChapter5oartificialgroundmotiontimehistory.Thbethegreaterbetweentheenvelopeofcalculatiomethodandtheresultobtainedthroughthemodeanalysisresponsespectrumme6.2.5Whenitisnemaximumverticalaccelerationa,ofgroundmotionmaybetakenas65%ofthemaximumhequipment,theinputaccelerationoffactorofthesupportingstructureandcomplywiththefollowingrequirements:electricalequipmentshallberegintendedtobeinstalledoofundergroundsubstationoronlowersupports,thedynamicamplificationfactoroftheirsuppofactorisnotlargerthanthespecifiedval3Forelectricalequipmentanddev4Forcomponentsmounte6.2.7Theseismicdesignofelethetotalgravityofthesystem(includingtheweightofterminalplates,fittingsandconpressure,terminalforce,and0.25timshort-circuitelectrodynamicforc1Calculationofearthquakea2Calculationofthebendingmomentandstressinducedbythespecifiedcombinationsofearthquakeactionandotherloads6.3.2Whenmodeanalysisresponsespectrummethodortimehistoryan2Calculationofearthquakeact3Calculationofdynamicre4Calculationofthebendingmomentandstress6.3.3Theseismicdesignofelectricalfacilitiesmayuseelementmodeldependingonthesystemcharacteristics,calculatcalculationmethods.3Suchlong-spanelectric4Bushingsoftransformersmaybesimplifiedto6.3.5Todirectlybuildamass-springsysthecontinuouslydistributedmassissimpf1)Thestiffnessofcantilever2)Iftheflangeandporcelainbushingarecemented,theflexuralstiffnessK.maybde——outerdiameterofthecementedpartofporcelainbushing,m;h.——heightofcementedporcelainbushint.——clearancebetweenflangeand3)IftheflangeandporcelainareconnectedthroughspringWhere,h’——heightofthecenterofspringclampconnectionabovethe4)Theflexuralstiffnessofdampingdevicesmaybedeterminedinaccomanufacturer'sperformancerequirements.2Wheretheflexuralstiffnessoftheconnectionbetwequipmentissubstitutedbyanequivalentbeamelement,themomentofinertiaIeofWhere,I.——momentofinertiaofcrosssection,m⁴;L——lengthofbeamelement,m,whiE——elasticmodulusofporcelainbushing,Pa.6.3.7Incalculationoftheearthquakeactionofelectricshallbeused.Iftheactualdampingratioofporcelainequipmentisunknown,itsvalueistobeupto2%,andshallcomply6.3.8CalculationofthestructuralseismicstrengthofelectricalfotandothercriticalcrosssectionsofequipmentanddfequipmentormaterialWherethecalculationismadewiththeultimatestressandbendingmomentofporcelainbushingsandjinsulatorsshallrespectivelymeetthefollowingformulae.1Thetotalstressofporcelainbushingsandi0——ultimatestrengthofequipmentormaterials,Pa.2ThetotalbendingmomentofporcelainbushingsandinsulatorsinducedbyearthquakeactionWhere,Mo——totalbendingmomentinducedbyearthquakeactiM——ultimatebendingmomentofequipmentormaterials,Nm.6.4.1Fornewtypitsseismiccapability.Forequipmentwhichisnotsuitablmaybeverifiedthroughsub-assembl6.4.2Thetestspecimenshallbemoconnectingparts,whichareonlyintendedforthetestpurpoperformanceofthetestspecicrosssectionsinthetwoprincipalaxisdirections.However,foraxiallysymmetrica6.4.4Forlong-spanandlong-cantileverelectricalfacilities,suchas6.4.5Theinputofelectricalfacilitiesshal1Forverificationtesprototypeelectricaldevicesystem,motionrecordsorartificialgroundmotionsmeetingtheseismicinflArticle5.0.5ofthisCode.TheinputpeakaccelerationshallbeselectedbaprecautionaryintensityandTable5.0.3-1ofthisCodeWhenverificationtestingisonl2Whenverificationtestingisonlyperformedfortheelectricalequipmentacomponents,theinputgroundmotionofshaketablemayalternativelybesinebeatcomposedofresonantamplitude-modulatedfive-cyclesinewaves,asTheaccelerationtimeWhenO≤t<5T,thevalueofamaybedetWhere,a——horizontalaccelerationtimT——fundamentalperiodoftheas——horizontalpeakgroundacceleration,g;w——naturalcircularfreqToavoidthesuperpositionofseismicrespWhere,T——beatinterval,s;f——fundamentalfrequencyofthes6.4.6Themonitoringpointsoftestspecimenshallbearrangeddependingonthestructureofelectricalfacilitiesandthetestrequirements,andthemeasure6.4.7Thestressatcriticalthestressesduetogravity,internalpressure,terminalforce,andCompliancewithArticle6.3.8ofthisCodeimpliesthattheproductcanmeettheseismicrequir6.5ElectricalFaciliti6.5.1Thearrangementofelecombinationwiththeelectricalgeneralla6.5.2Whentheseismicpre1For110kVandaboveswitcarrangementshouldnot2Thetubularbusbarsof110kVandabove3110kVandaboveequipseismicstrengthverificationtestingrequirementsgiveninA6.5.4Whentheseismicprecautionaryintensityis8deshouldnotbearrangedwithitsthreephasesverticallyarr6.6.1Forcommunicationofimportantelectricalinstallations,twoocircuit.Thetwomutuallyindependentchannelsshou6.6.2Forcommunicationoflargeaninstallationsandimportantsubstations,twoormoreindependenprovided,andshouldformaringnetworkoranetworkwithby6.6.3Reliablepowersupplyshallbeprovidedforreliabletwo-circuitACpowersureliableDCpowersupplyshallbeprovidedforbelectricalinstallationsanbackupDCpowersuppl6.7SeismicRequirementsforElectr6.7.1Theinstallationofelcomplywiththerequirementsgivenin6.7.2Theequipmentleadandconnectingconductoandshallbereservedwithextralength.Ifrigidbusbarisused,flexibleconductororexpansionjointshallbeprovidedfortransiti6.7.3Theelectricalequipment,communicationequishallcomplywiththeseism6.7.4Theinstallationoftransformersshallcomplywiththefollowingrequirements:1Thewheelsandtracksoftransformersshouldbere2Theconservatorthetransformeraswellastheconnectingpipesbetweenthecentralizedcomplywiththeseismicrequiremen3Thefoundationsoftransformersshouldbeapproximatelywidened.6.7.5Theinstallationofrotatingmachinesshallcomplywiththefollowingrequirements:1Thestrengthofmountingboltsandembeddedpartsshallcompl6.7.6Theinstallationofoper6.7.7Theinstallationofbatteriesandcapacitorsshallcomplywiththefollowingreq1Batteriesshallbeinstalledwithearthquakeprote2Connectionbetweenbatterybankconductors.Inthecaseofrigidbus,expansion6.7.8Switchcabinets(panels),controlandprotectionconnectedtogetheratalevelabovetheircenterofgrav6.8DesignofSeismic6.8.1Suitableseismicisolastructuralcharacteristics,operatingrequirements,naturalperiodofvibration,andsiteclassofthe6.8.2Theseismicisolationmat,leadalloyenergyabsorbersofshear6.8.3Theseismicsolationorenergydissipationmeasures,iftaken,shallnotaffoperationofelectricalequipment.6.8.4Theisolatorsandenergyabsorbers6.8.6Astotheearthquakemitigationdesign,appropriateethestructuralcharacteristics,naturalfrequencyofvibratio