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Product Code:SAE ARP9137
Title:Guidance for the Application of AQAP 2110 within a 9100 Quality Management System
Issuing Committee:G-14 Americas Aerospace Quality Standards Committee (Aaqsc)
Scope:This document has been prepared and issued to provide information and guidance on the application of AQAP 2110 when the Supplier adheres to the provisions of 9100. This document is published as AQAP 2009 Annex F and 9137. It was jointly developed by NATO and industry representatives for use by NATO and industry to facilitate the use and understanding of the relationship between the AQAP 2110 and 9100.【英文标准名称】:StandardTestMethodforLaboratoryDeterminationofCreepPropertiesofFrozenSoilSamplesbyUniaxialCompression
【原文标准名称】:单轴压缩法实验室测定冻结土壤样品蠕变性能的标准试验方法
【标准号】:ASTMD5520-1994(2006)e1
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D18.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:实验室;土壤;拉伸试验;使用;应力;蠕变性能;实验室试验;温度试验;变形;单轴压缩;冻结土壤;单轴压缩;冻结土壤样品;石头;粗石材料;压缩试验;蠕变;相关材料
【英文主题词】:creep;deformation;frozensoil;strain;stress;temperature;uniaxialcompression
【摘要】:Understandingthemechanicalpropertiesoffrozensoilsisofprimaryimportancetopermafrostengineering.Datafromcreeptestsarenecessaryforthedesignofmostfoundationelementsembeddedin,orbearingonfrozenground.Theymakeitpossibletopredictthetime-dependentsettlementsofpilesandshallowfoundationsunderserviceloads,andtoestimatetheirshort-andlong-termbearingcapacity.Creeptestsalsoprovidequantitativeparametersforthestabilityanalysisofundergroundstructuresthatarecreatedforpermanentuse.Itmustberecognizedthatthestructureoffrozensoilinsituanditsbehaviorunderloadmaydiffersignificantlyfromthatofanartificiallypreparedspecimeninthelaboratory.Thisismainlyduetothefactthatnaturalpermafrostgroundmaycontainiceinmanydifferentformsandsizes,inadditiontotheporeicecontainedinasmalllaboratoryspecimen.Theselargeground-iceinclusions(suchasicelenses)willconsiderablyaffectthetime-dependentbehavioroffull-scaleengineeringstructures.Inordertoobtainreliableresults,high-qualityundisturbedrepresentativepermafrostsamplesarerequiredforcreeptests.Thequalityofthesampledependsonthetypeoffrozensoilsampled,theinsituthermalconditionatthetimeofsampling,thesamplingmethod,andthetransportationandstorageprocedurespriortotesting.Thebesttestingprogramcanberuinedbypoor-qualitysamples.Inaddition,onemustalwayskeepinmindthattheapplicationoflaboratoryresultstopracticalproblemsrequiresmuchcautionandengineeringjudgment.1.1Thistestmethodcoversthedeterminationofthecreepbehaviorofcylindricalspecimensoffrozensoil,subjectedtouniaxialcompression.Itspecifiestheapparatus,instrumentation,andproceduresfordeterminingthestress-strain-time,orstrengthversusstrainraterelationshipsforfrozensoilsunderdeviatoriccreepconditions.1.2Althoughthistestmethodisonethatismostcommonlyused,itisrecognizedthatcreeppropertiesoffrozensoilrelatedtocertainspecificapplications,canalsobeobtainedbysomealternativeprocedures,suchasstress-relaxationtests,simplesheartests,andbeamflexuretests.Creeptestingundertriaxialtestconditionswillbecoveredinanotherstandard.1.3ValuesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:13_080_40
【页数】:8P.;A4
【正文语种】: