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【英文标准名称】:StandardPracticeforExtensometersUsedinRock
【原文标准名称】:岩石用变形计
【标准号】:ASTMD4403-1984(2005)
【标准状态】:现行
【国别】:
【发布日期】:1984
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:天然石料;砌块;岩石;应变仪;工艺;建筑;施工材料;石
【英文主题词】:convergence;dataanalysts;deformation;displacement;extensometers;fieldtesting;installation;monitoring;rock;settlement;tunnels;undergroundenvironments
【摘要】:Extensometersarewidelyusedinthefieldofengineeringandincludemostdevicesusedtomeasuredisplacements,separation,settlements,convergence,andthelike.Fortunnelinstrumentation,extensometersaregenerallyusedtomeasureroofandsidewallmovementsandtolocatethetensionarchzonesurroundingthetunnelopening.Extensometersarealsousedextensivelyassafetymonitoringdevicesintunnels,inundergroundcavities,onpotentiallyunstableslopes,andinmonitoringtheperformanceofrocksupportsystems.Anextensometershouldbeselectedonthebasisofitsintendeduse,theprecisenessofthemeasurementrequired,theanticipatedrangeofdeformation,andthedetailsaccompanyinginstallation.Nosingleinstrumentissuitableforallapplications.1.1Thispracticecoversthedescription,application,selection,installation,datacollecting,anddatareductionofthevarioustypesofextensometersusedinthefieldofrockmechanics.1.2LimitationsofeachtypeofextensometersystemarecoveredinSection.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIvaluesgiveninparenthesesareprovidedforinformationpurposesonly.1.4Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.5Thispracticeoffersasetofinstructionsforperformingoneormorespecificoperations.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:10P.;A4
【正文语种】:


Product Code:SAE J1026
Title:Braking Performance--Crawler Tractors and Crawler Loaders
Issuing Committee:Optc2, Braking
Scope:This SAE Standard applies to crawler tractors and crawler loaders as identified in SAE J1057 and SAE J1116 and having a manufacturer's maximum specified speed of 16 km/h.The purpose of this standard is to provide performance criteria for service brake systems, secondary brake systems, and parking brake systems for crawler tractors and crawler loaders.