ASTM D4394-2008 用刚性板负荷法测定岩石质量现场变形模数的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingInSituModulusofDeformationofRockMassUsingRigidPlateLoadingMethod
【原文标准名称】:用刚性板负荷法测定岩石质量现场变形模数的标准试验方法
【标准号】:ASTMD4394-2008
【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】:adit;deformation;displacement;fieldtesting;fracturetesting;loadingtests;modulusofdeformation;pressuretesting;rigidplateloadingmethod;rock;stress;undergroundenvironments;Adit;Deformation--rock;Displacement--rockenvironments;Field
【摘要】:Resultsofthistypeoftestmethodareusedtopredictdisplacementsinrockmasscausedbyloadsfromastructureorfromundergroundconstruction.Itisoneofseveralteststhatshouldbeperformed.Theresultinginsitumodulusiscommonlylessthantheelasticmodulusdeterminedinthelaboratory.Themodulusisdeterminedusinganelasticsolutionforauniformlydistributedload(uniformstress)overacircularareaactingonasemi-infiniteelasticmediumthatproducesaconstantnormaldisplacementoftheloadedsurfaceareaofthemedium.Thistestmethodisnormallyperformedatambienttemperature,butequipmentcanbemodifiedorsubstitutedforoperationsatothertemperatures.1.1Thistestmethodcoversthepreparation,equipment,testprocedure,anddatareductionfordetermininginsitumodulusofdeformationofarockmassusingtherigidplateloadingmethod.1.2Thistestmethodisdesignedtobeconductedinanaditorsmallundergroundchamber;however,withsuitablemodificationsitcouldbeconductedatthesurface.1.3Thistestmethodisusuallyconductedparallelorperpendiculartotheanticipatedaxisofthrust,asdictatedbythedesignload.1.4Timedependenttestscanbeperformedbutaretobereportedinanotherstandard.1.5ObservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.5.1Themethodusedtospecifyhowdataarecollected,calculated,orrecordedinthisstandardisnotdirectlyrelatedtotheaccuracytowhichthedatacanbeappliedindesignorotheruses,orboth.Howoneappliestheresultsobtainedusingthisstandardisbeyonditsscope.1.6Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.7Thereferencesappendedtothisstandardcontainfurtherinformationonthistestmethod.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.Forspecificprecautionstatements,seeSection8.
【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】:英语