ISO／DIS 22480-1：2020.docx

DRAFTINTERNATIONA1STANDARDISO/DIS22480-1ISOTC269/SC1Votingbeginson:2023-08-31Secretariat:AFNORVotingterminateson:2023-11-23Rai1wayapp1ications-Concretes1eepersandbearersfortrackPart1:Genera1requirementsApp1icationsferroviaires-TraversesetsupportsenbtonpourIavoie一Partie1:PrescriptionsgeneratesICS:45.080THISDOCUMENTISADRAFTCIRCU1ATEDFORCOMMENTANDAPPROVA1.ITISTHEREFORESUBJECTTOCHANGEANDMAYNOTBEREFERREDTOASANINTERNATIONA1STANDARDUNTI1PUB1ISHEDASSUCH.INADDITIONTOTHEIREVA1UATIONASBEINGACCEPTAB1EFORINDUSTRIA1TECHNO1OGICA1,COMMERCIA1ANDUSERPURPOSES.DRAFTINTERNATIONA1STANDARDSMAYONOCCASIONHAVETOBECONSIDEREDINTHE1IGHTOFTHE1RPOTENTIA1TOBECOMESTANDARDSTOWHICHREFERENCEMAYBEMADEINNATIONA1REGU1ATIONS.RECIPIENTSOFTHISDRAFTAREINVITEDTOSUBMIT.WITHTHEIRCOMMENTS.NOTIFICATIONOFANYRE1EVANTPATENTRIGHTSOFWHICHTHEYAREAWAREANDTOPROVIDESUPPORTINGDOCUMENTATION.Thisdocumentiscircu1atedasreceivedfromthecommitteesecretariat.ReferencenumberISO/DIS22480-1:2023(E)©ISO2023COPYRIGHTPROTECTEDDOCUMENT©ISO2023A11rightsreserved.Un1essotherwisespecified,orrequiredinthecontextofitsimp1ementation,nopartofthispub1icationmaybereproducedoruti1izedotherwiseinanyformorbyanymeans,e1ectronicormechanica1,inc1udingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1oworISO'smemberbodyinthecountryoftherequesterISOcopyrightofficeCP401Ch.deB1andonnet8CH1214Vernier;GenevaPhone:*41227490111Emai1:copyrightiso.orgWebsite:www.iso.orgPub1ishedinSwitzer1andFQrewordVItrQiCrjvi1Scope2Normativereferences3TermsanddefinitionsPage5.1 4Symbo1sandabbreviatedtermsContents5.2 Genera15.3 1oadsforSIeePerSandbearersint3ck5.3.2 1oaddistribution5.3.3 Characteristicbendingmoments5.4 TeStIoadS5.4.2 Genera1.5.4.3 MethodA-verificationofbendingcapacities5.4.4 MethodB-Verificationofminimumperformancerequirements44555555666Datatobesupp1ied61(Genera16.2 Datatobesupp1iedbythepurchaser6.3 Datatobeprovidedbythesupp1ier6.3.1 Beforethedesignapprova1tests6.3.2 Afterthedesignapprova1testsMateria1s87.2 Cement87.5 Admixtu_一T一1T1F一一一,一一-,m,97.6 ncrete)7.6.1 Informationtobeprovidedbythesupp1ier107.6.2 Changesforthemateria1andprocesses1077.2rcngStee1.107.6.3 Stee1connectingbarfortwin-b1ocks1eepers一.107.8 Emt)JnentS一.1Genera1requirements8.1Design-11AI一2Conrrpfprv148.1.3Prcstressingsystemdesign148.1.4Reinforcingstee1design148.2Manufacturingprocess148.2.1Genera1requirements14158.2.3Natura1curing15158.317f1.4Markin?HProducttestingg9.3 Testsonproduct199.4 Testsonconcrete.199.5 Testsincombinationwiththefasteningsystem192010.2 Qua1itycontro1duringdesignapprova1tests2010.3 Qua1itycontro1duringmanufacturing21Annex A (informative)Determinationoffactorkfortimedependent1ossesofstrength22Annex B (informative)Ca1cu1ationofthebendingcapacitybymethodA24Annex C (informative)Determinationandapp1icationofminimumperformancerequirementsandre1atedtest1oadsfromexperienceintrack25Annex D (informative)Correspondencebetweenre1evantnationa1orregiona1standards29Annex E (informative)TestmethodformeasuringthewaterabsorptionofconcreteatAnnex F (informative)Definitionandrecommendationformeasurementofrai1seatinc1inationandtwistbetweenrai1seats32Annex G (informative)Surfacenish33Annex H (informative)Qua1itycontro1duringmanufacturing-Routinetestsandfrequencyoftesting35IntroductionThispartoftheISO22480seriescoversthegenera1requirementsforconcretes1eepersandbearersandisusedinconjunctionwiththefo11owingpart:一Part2:Prestressedmonob1ocks1eepers.Concretes1eepersandbearersaresafetycritica1componentsforrai1wayapp1ications.Theyarenotcoveredbyanyotherinternationa1standards.Assafetycritica1components,anagreementisneededbetweenpurchaserandsupp1iertoperforms1eeperdesignandmanufactureaswe11astooperateafactoryQua1itySystem.Rai1wayapp1icationsConcretes1eepersandbearersfortrack一Part1:Genera1requirements1 ScopeThispartoftheISO22480seriesdefinestechnica1criteriaandcontro1procedureswhichneedtobesatisfiedbytheconstituentmateria1sandthefinishedconcretes1eepersandbearers,i.e.:precastconcretes1eepers,twin-b1ockreinforceds1eepers,bearersforswitchesandcrossings,andspecia1e1ementsforrai1waytracks.Themainrequirementofconcretes1eepersandbearersisthetransmissionofvertica1,1atera1and1ongitudina11oadsfromtherai1stotheba11astorothersupport.Inuse,theyarea1soexposedtofrostdamageandtomoisture,whichcanresu1tindetrimenta1chemica1reactionswithinthes1eeper.Inthisstandardmechanica1testsaredefinedwhichprovideassuranceofthecapabi1ityofs1eepersorbearerstoresistrepetitive1oadingandprovidesufficientdurabi1ity.Inaddition,contro1sarep1acedonmanufacturingproc