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【英文标准名称】:StandardTestMethodforDeterminingInSituCreepCharacteristicsofRock
【原文标准名称】:岩石蠕变特性现场测定的试验方法
【标准号】:ASTMD4553-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:creep;deformation;insitustress;loadingtests;rigidplateloadingmethod;Creep--rock;Deformation--rock;Destructivetesting--soil/rock;Fieldtesting--rock;Fracturetesting--rock;Loadingtests--rock/relatedmaterials;Pressuretesting--rock;Rock
【摘要】:Resultsofthistestmethodareusedtopredicttime-dependentdeformationcharacteristicsofarockmassresultingfromloading.Itisatestthatmayberequireddependingonrocktypeoranticipatedloads,orboth.Thistestmethodmaybeusefulinstructuraldesignanalysiswhereloadingisappliedoveranextensiveperiod.Thistestmethodisnormallyperformedatambienttemperature,butequipmentcanbemodifiedorsubstitutedforoperationsatothertemperatures.Resultsofthistestmethodmaybeusefulinverifyinglaboratorycreepdataandstructuralmathematicalmodelinganalyses.Creepcharacteristicsaredeterminedunderanonuniformstateofstress.Ifduringafieldinvestigation,time-dependentcharacteristicsaredetected,thenaninsitucreeptestshallbeperformed.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthepreparation,equipment,testprocedure,anddatadocumentationfordetermininginsitucreepcharacteristicsofarockmassusingarigidplatesubjectedtocontrolledloading.1.2Thistestmethodisdesignedtobeconductedinanundergroundopening;however,withsuitablemodifications,thistestcouldbeconductedatthesurface.1.3Thetestisusuallyconductedparallelorperpendiculartotheanticipatedaxisofthrust,asdictatedbythedesignloadorotherorientations,basedupontheapplication.1.4Flexibleplateapparatuscanbeusediftheanticipatedcreepdisplacementiswithinthetoleranceofthetraveloftheflatjacks.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionstatements,seeSection8.
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:7P.;A4
【正文语种】:英语