【英文标准名称】:Informationtechnology-Genericcablingsystems-Part1:generalrequirementsandofficeaeras.
【原文标准名称】:信息技术.综合电缆布线系统.第1部分:一般要求和办公区
【标准号】:NFC90-485-1-2003
【标准状态】:作废
【国别】:法国
【发布日期】:2003-08-01
【实施或试行日期】:2003-08-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电路网络;通信电缆;性能;定义;规范(验收);效率;电缆控制能力;计划;布线;电气工程;光波导;办公室设备;建筑物;装置;结构;信息交换;连接工艺;对称的;防护屏蔽;编织外壳;电磁兼容性;铜电缆;特性;数据处理;连接工程;数据传输;电力设备;试验;系统管理;拓扑学;电信;场所;信息技术;传输
【英文主题词】:Braidshieldings;Buildings;Cabling;Circuitnetworks;Communicationcables;Connectionengineering;Connectiontechnology;Coppercable;Dataprocessing;Datatransmission;Definitions;Earthing;Efficiency;Electricalengineering;Electricalinstallations;Electromagnetic;Electromagneticcompatibility;Electromagnetism;EMC;Information;Informationinterchange;Informationtechnology;Installations;Locations;Marking;Officeequipment;Opticalwaveguides;Performance;Planning;Power-handlingcapacity;Properties;Shields;Specification(approval);Structure;Symmetrical;Systemmanagement;Systems;Telecommunications;Testing;Topology;Transmission
【摘要】:
【中国标准分类号】:K47
【国际标准分类号】:35_110
【页数】:113P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforFieldVaneShearTestinCohesiveSoil
【原文标准名称】:粘性土十字板剪切试验的标准试验方法
【标准号】:ASTMD2573-2008
【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】:D18.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:clay;exploration;in-situtest;sensitivity;shearstrength;undrainedstrength;vaneshear;Cohesivesoils;Fieldtesting--soil;Fieldvanesheartest;In-situsoil/rocktesting/analysis;Sheartesting--soil;Soil;Vanesheartest
【摘要】:Thistestmethodprovidesanindicationofin-situundrainedshearstrengthoffine-grainedclaysandsiltsorotherfinegeomaterialssuchasminetailings,organicmuck,andsubstanceswhereundrainedstrengthdeterminationisrequired.Thetestisapplicabletosoilswithundrainedstrengthsoflessthan200kPa(2tsf).Verysensitivesoilscanberemoldedduringvaneinsertion.Thistestmethodisusedextensivelyinavarietyofgeotechnicalexplorationstoevaluaterapidloadingstrengthfortotalstressanalysisofsaturatedfine-grainedclaysandsilts.Thetestisroutinelyperformedinconjunctionwithotherfieldandlaboratorytests.Thepeakundrainedshearresistanceofthevanetestiscommonlycorrectedtodeterminetheundrainedshearstrengthforgeotechnicalanalysis.Theagencyrequestingthetestingmustinterpretthesedatatodetermineapplicabilityforstrengthanalysis.Itisbeyondthescopeofthisstandardtorecommendapplicabilityofvanetestingforgeotechnicalanalysis.Forinformationonthegeneraluseofthesecorrectionfactors,consultAppendixX1.Thismethodisnotapplicableinsands,gravels,orotherhighpermeabilitysoils.Withtheshearingratesdescribedinthisstandard,sandlenses,ifpresent,willallowtotalorpartialdrainage.Soilswithhigherpermeability,inrapidshear,candilateorcollapseandgeneratenegativeorpositiveporepressureswhichmay,ormaynot,dissipateintheshearingprocess.Itisimportanttocheckthesoiltypebeingtested.Itisverybeneficialtosamplethesoileitherbeforeoraftertesting,tounderstandthedrainageconditions(permeability)ofthesoiltested.Thistestisoftenperformedindrilledboreholesorwithself-pushorself-drillingorpushed(vaneshoe)methods.Thismethodalsoappliestohandheldvanesheartestsperformedatshallowdepths,however,handheldequipmentmaybelessaccurate,becauseitmaybemoredifficulttomaintainvane/rodstabilityandverticality.Note28212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;StandardPracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthefieldvanetestinsaturatedclayandsiltsoilsfordeterminationofundrainedshearstrength.Knowledgeofthenatureofthesoilinwhicheachvanetestistobemadeisnecessaryforassessmentoftheapplicabilityandinterpretationofthetest.Thetestisnotapplicableforsandysoilswhichmayallowdrainageduringthetest.1.2Thistestmethodaddressestestingonlandandfortestingindrillholesorbyselfdrillingorcontinuouspushmethodsfromthegroundsurface.Thismethoddoesnotaddressspecificallymarinetestingwherespecialtestrequirementsorvariationsinequipmentmayberequired.TheuserisreferredtoASTMSTP1014foradditionalinformationonin-placevanesheartesting.1.3Thismethodisoftenusedinconjunctionwithfluidrotarydrilling(D5783)orhollow-stemaugers(D6151).Someapparatuseshavethevaneretractedinprotectiveshoeforadvancementandincrementaltesting.Sampling,suchaswiththinwalltubes(D1587)isoftencombinedwithvanetesting.Subsurfacegeotechnicalexplorationsarereportedinaccordancewithpractice(D5434).