【英文标准名称】:StandardTestMethodsforDeepFoundationsUnderStaticAxialTensileLoad
【原文标准名称】:静态轴向抗拉荷载下深地基的标准试验方法
【标准号】:ASTMD3689-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D18.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;施工材料;天然石料;桩;岩石;石;抗拉荷载;抗拉强度;测试
【英文主题词】:axialstatictensilepilecapacity;fieldtesting;jack;loadcell;loadingprocedure;referencebeam
【摘要】:Fieldtestsprovidethemostreliablerelationshipbetweentheaxialloadappliedtoadeepfoundationandtheresultingaxialmovement.Testresultsmayalsoprovideinformationusedtoassessthedistributionofsideshearresistancealongthepileshaftandthelong-termload-deflectionbehavior.Afoundationdesignermayevaluatethetestresultstodetermineif,afterapplyinganappropriatefactorofsafety,thepileorpilegrouphasanultimatestaticcapacityandadeflectionatserviceloadsatisfactorytosupportaspecificfoundation.Whenperformedaspartofamultiple-piletestprogram,thedesignermayalsousetheresultstoassesstheviabilityofdifferentpilingtypesandthevariabilityofthetestsite.Iffeasible,withoutexceedingthesafestructuralloadonthepile(s)orpilecap,themaximumloadappliedshouldreachafailureloadfromwhichtheengineermaydeterminetheultimateaxialstatictensileloadcapacityofthepile(s).Teststhatachieveafailureloadmayhelpthedesignerimprovetheefficiencyofthefoundationbyreducingthepilinglength,quantity,orsize.Ifdeemedimpracticaltoapplyaxialtestloadstoaninclinedpile,theengineermayelecttouseaxialtestresultsfromanearbyverticalpiletoevaluatetheaxialcapacityoftheinclinedpile.Note18212;Thequalityoftheresultproducedbythesetestmethodsisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthesetestmethodsarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thetestmethodsdescribedinthisstandardmeasuretheaxialdeflectionofaverticalorinclineddeepfoundationwhenloadedinstaticaxialtension.Thesemethodsapplytoalldeepfoundations,referredtohereinas"piles,"thatfunctioninamannersimilartodrivenpilesorcastinplacepiles,regardlessoftheirmethodofinstallation,andmaybeusedfortestingsinglepilesorpilegroups.Thetestresultsmaynotrepresentthelong-termperformanceofadeepfoundation.1.2Thisstandardprovidesminimumrequirementsfortestingdeepfoundationsunderstaticaxialtensileload.Plans,specifications,provisions,oranycombinationthereofpreparedbyaqualifiedengineermayprovideadditionalrequirementsandproceduresasneededtosatisfytheobjectivesofaparticulartestprogram.Theengineerinresponsiblechargeofthefoundationdesign,referredtohereinastheengineer,shallapproveanydeviations,deletions,oradditionstotherequirementsofthisstandard.1.3Thisstandardallowsthefollowingtestprocedures:1.4Apparatusandprocedureshereindesignated"optional"mayproducedifferenttestresultsandmaybeusedonlywhenapprovedbytheengineer.Theword"shall"indicatesamandatoryprovision,andtheword"should"indicatesarecommendedoradvisoryprovision.Imperativesentencesindicatemandatoryprovisions.1.5Aqualifiedgeotechnicalengineershouldinterpretthetestresultsobtainedfromtheproceduresofthisstandardsoastopredicttheactualperformanceandadequacyofpilesusedintheconstructedfoundation.Seeforcommentsregardingsomeofthefactorsinfluencingtheinterpretationoftestresults.1.6Aqualifiedengineershalldesignandapproveallloadingapparatus,loadedmembers,supportframes,andtestprocedures.Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymat......
【中国标准分类号】:P22
【国际标准分类号】:93_020
【页数】:13P.;A4
【正文语种】:


【英文标准名称】:Multicoreandsymmetricalpair/quadcablesfordigitalcommunications-Part3:Workareawiring-Sectionalspecification;Amendment2
【原文标准名称】:数字通信用对绞或星绞多芯对称电缆第3部分:工作区布线电缆分规范修改2
【标准号】:IEC61156-3AMD2-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC46C
【标准类型】:()
【标准水平】:()
【中文主题词】:布线;工作场所;对称的;多芯电缆;分规范;通信电缆;规范;电气工程;双股电线;电缆
【英文主题词】:pairsofwires;specification;workspaces;sectionalspecification;communicationcables;multicorecables;electricalengineering;symmetrical;wiring;cables
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:7P;A4
【正文语种】:英语