evd检测技术在客运专线路基施工中的应用evd检测技术,路基施工,应用基础技术-新闻频. 13页

evd检测技术在客运专线路基施工中的应用evd检测技术，路基施工,应用基础技术-新闻频道-中华工程师网(TheapplicationofEVDEVDdetectiontechnologyintheconstructionofSubgradeofpassengerdedicatedlinedetectiontechnologyinsubgradeconstruction,TheapplicationofEvddetectiontechnologyinsubgradeconstructionofpassengerdedicatedline,Evddetectiontechnology,subgradeconstruction,applicationofbasictechnology一NewsChannel一Chinaengineersnetworktoshare・・・CopytheURLQQmailSinamicro-blogMSNmicro-blogspaceTencentrenren.comhappynetNetEasemicro-blogSohumicro-blogBaidunetfriendTaobaoJianghuwatercressshareakeytoseemore(122)thisiswhatJiaThistools?SharetomajorwebsitesShareakeyguessyoulovecopywebsitefavoritesprintmailQQSinamicro-blogmicro-blogmicro-blogspaceTencentSohuNetEasemicro-blogrenren.comhappynetSohuwhitesocietyAmoyfriendsnetworkmop・comarenawatercresstwitterBaiduBaiduPostBarTianyashareaphoenixnetinterestwingFetionmicro-blogUshiFanfou51GoogleGoogleBuzzQQcommunityYoudaobookmarkbookmarkMSNSinaviviPinterestnetworkstackfansnetsugarpetalscradlemicro-blog115BaiduspaceGmailmailboxHotmailmailboxYahoo!Mailandmicro-blog139mailbox189e-mailSouthTianyimobilemicro-blog139micro-blogmicro-bloggoldcommunitylobbyistspeopleXinhuamicro-blogmiserGoogletranslationpushhimtodowhatfruitnotesspendmutteringnetworkcattlenetarea42metersnchatIburnnetsSinalightBoPhoenixfastBoBeijingGuangmingnetnetandmicro-blogearththundermonkeyFantasyAmasanetveinlibraryFacebookTwitterTumblrRedditlnstapaperReadItLatergeekfoundWealinkdon，tpickthemusiccollectionofclassmatenetcustomernetworkdugentrepreneursavetheearthdrawernetworkdeliverypassengernetworkwatercress9beautifulmogujie.comskylinePoconetwork'sNetEasesetnetPdfonlineconversionprinterfriendlyW3cverificationBit.lyDiggMai1.ruDiigoEverNoteFriendFeedMyspaceLinkedlnMixxNetLogNetvibesPhonefavsPing・fmPlaxoDeliciousMisterWongStumbleuponPlurkFunpMyshareFwispwhatisthistool?JiaThisXXXXengineeringbecomeswonderfulfor51GCShomeyetHelpsearchpassword,loginmailbox,communityhomeforum,bloginteractioncircle,datingexpert,newstechnology,industrydynamicexhibition,employmentcourse,lecturercertificatedownload,CAXstandard,informationtechnologyVocationalguidance,evaluation,recruitment,jobsearchserviceproviders,consultingoutsourcingprojects,professionalCAD,CAE,CAM,PDM,CAPP,PLMindustry,automotivemachinery,aerospace,paper,yourposition:Webbasedtechnologymachinery一>text一〉一〉ApplicationofEvddetectiontechnologyinsubgradeconstructionofnpassengerdedicatedlineinNovember24,2008Thequalityofsubgradeconstructionisrelatedtothequalityandscheduleofthewholeprojectandthesafetyofthetrainoperation.Scientificandreasonablemonitoringandtestingmethodisanimportantmeasuretoensuretheconstructionoftheroadbed・Soilcompactionisoneofthemostbasicproblemsintheconstructionofsubgradeengineering,butitislimitedtomeasureandjudgethequalityofsubgradeonlywiththecompactnessindex・Becausetheconstructionmethodsofsubgradefillaredifferent,thedifferenceofwatercontentandcompactionstandard,themechanicalpropertiesofsoilwiththesamedensityaredifferent・Therefore,basedonthedetectionofcompactness,thestrengthanddeformationindexasthecompactionstandardreflectingthebearingcapacityofsubgrade,isthedevelopmentdirectionofsubgradeconstructionqualitytestingtechnologyathomeandabroad・Thetraditionalstrengthanddeformationparametersaremeasuredbystaticplateloadingtest,ThedetectionoffoundationcoefficientK30,andtheactualloadsubgradenotonlyunderstaticload,andwhenthetrainisrunningonthesubgradedynamicload,especiallyinrailwaypassengerdedicatedline,dynamicimpactloadonthesubgradeismoreobvious,thatistosay,thesubgradestabilityanddeformationismainlyduetothedynamicloadcausedbyso,thesimulationoftrainoperationwhenthedynamicstressanddynamicdeformationindexasthestandardofsubgradeconstructionqualitydetectionwillbemorescientificandreasonable,moreinlinewiththeactualsituation.n1projectoverviewWuhanGuangzhoupassengerdedicatedlinedesignspeedof350km/h,theuseofballastlesstrackform,itshighstandards,newtechnology,largescientificandtechnologicalcontent・Subgradeasanimportantpartoftheorganization,thequalitytestadoptstheresistancetestmethod,thatis,thestrengthanddeformationindexasthequalitycontrolparametersofsubgradefill,mainlyineludingEvd,Ev2,K30,n(orK)indicators・Therailwaysubgrade20.908kmofWuhanGuangzhourailwaypassengerdedicatedlinewasdesignedbyourcompany,andEvd,K30andEv2arethenecessaryindicatorsforthedesign.ThedesignstandardofEvddynamicdeformationmodulusis:thesurfaceofsubgradebedis55MPa,foundationbed,40MPa・Intheconstruction,thedynamicdeformationmodulustesterofZORNandZFG-02typeEvdisadopted,andthedetectionmethodistestedaccordingtotherailwayengineeringsoiltestregulations(TB10102-2004).2,theprincipleoftheEvdtestDynamicdeformationmodulusEvd(dynamic,modulus,of,deformation)istheparameterofsoilresistancetodeformationundercertainverticalimpactandimpacttime・2.1workingprincipleDynamicdeformationmodulustesterusesacertainqualitydrophammer,fromacertainheightfreefall,throughthedampingdevice,bearingplate,theroadbedhasaninstantaneousimpact,sothattheroadbedsubsidence・Itistheuseofacertainqualityndrop,fallingfreelyfromacertainheight,simulationoftrainoperationonthesubgradeandthedynamicloadeffectofSubgradeinthesameimpact,theimpactoftheconditions,theverticaldeformationofsubgradedeformationmodulusvalue,Evdindextocalculatethedynamic・Theoretically,themorecompactedthesubgradeis,thesmallerthesettlementvalueis,thehigherthedynamicmodulusofdeformationofthesubgradeis,andthehighertheEvdvalueofthesubgrade:onthecontrary,thelowertheEvdvalueofthesubgrade・2.1calculationformulaThedynamicmodulusofdeformation(Evd)isthemodulusofsoildeformationmeasuredbyaslabtestofadrophammerimpactingonacertainsizeandactingontime・Usually,thediameteroftheloadplateis300mm,thehammerweightis10kg,andthemaximumimpactforceis7KN,loadpulsewidth18mm・Testthefallingoftheplateduringdropimpact・AssumingtheconstantimpactforceandPoisson，sratio二0.21,thedynamicdeformationmodulusiscalculatedbytheformulaofthecircularlocalloadontheelasticisotropichalfspace:Evd二0.79(1-,2)dSigma/S二1.5RSigma/S二22.5/s(MPa)Type:R-theradiusofthecarrierplate,hereis150mm;Maximumdynamicstressofsubgrade;nThesettlementvalueofSbearingplate(mm);1.5一bearingplateshapeinfluencefactor・3themaintechnicalperformanceparametersofthedynamicplateloadtesterThedynamicdeformationmodulustesterismainlycomposedofadrophammerinstrumentandasettlementmeasuringinstrument・AsshowninFigure1,thedropweightinstrumentincludes:uncouplingdevice,drophammer,guidebar,dampingdevice,bearingplateandsoon,Thesettlementtestermainlyconsistsofsensors,amplifiers,dataprocessors,printersandpowersupplies・Evddynamicplateloadingtestisapplicabletoallkindsofsoilandrocksoilmixturefillerswhosediameterisnotlargerthanloadplatediameter1/4.Themaintechnicalparametersare:(1)thescopeoftestingmeet:lOMPa二Evd二225MPa;(2)testdepthrange:400~500mm;maximumslopeoftestsurface:5%;(4)totalweight:35kg,dropweight:10kg;(5)maximumimpactforce:7.07kN(6)carryingplatediameter:300mm;thickness:20mm;n(4)durationofshock:18+2ms(5)subsidencetestrange:0.20~2.00mm;accuracy:+5%;(6)environmentaltemperaturerange:0〜40degreescentigrade;(7)powersupply:4section5drybattery,2groups・Testmethodfor4Evddynamicmodulusofdeformation4.1preparationbeforetest(1)thetestsurfaceshouldbesmooth,theinclinedanglemorethan5degrees.(2)thetestsurfacemustbesmoothwithoutholes,theloadTheplateisingoodcontactwiththegroundandthesurfaceofthecoarsegrainedsoilormixtureisuneven・Asmallamountoffinemediumsandcanbeusedtofillthefloor・(3)theguiderodshouldbeverticalandsmooth.(4)checkthedistaneeindicatedbytheinstrument.(5)thetestpointmustbefarfromthesourcewhentesting・4.2testprocedure(1)theloadplateisplacedonawellformedtestsurface,andtheguiderodismountedandheldupright・n(1)willdroptohang(off)hookdeviceon,andthenthedecouplinganddropdropdropafterthebouncewhencaughtandhung(offhook)device,threepreshockaccordingtotheoperation・(2)theformalteststepbystepthewayforthethreeimpacttest,asaformaltestrecord.Themovingandjumpingoftheloadplateshouldbeavoidedduringthetest・(3)saveandprinttestresults・(4)whentesting,theengineeringname,location,testtime,soiltype,moisturecontentandrelevantparametersshouldberecordedateachmeasuringpoint・4.2outputoftestresultsThetestresultsofEvddynamicmodulusofdeformationcanbedirectlyprintedbyasettlementtesterorconnectedtothecomputer,andatestreportwillbegeneratedbyspecialdataprocessingsoftware(Figure2,figure3).5mainfeaturesDynamicplateloadtestisanewdetectionmethod・Comparedwithothertraditionaltestmethods,ithasfivecharacteristics:(1)EvddynamicplateloadtestmethodisusedtotestthedynamicdeformationmodulusEvdindexofsubgrade・Theoperationissimpleandthetestingspeedisfast・Ittakesonlythreeminutestotestnonepoint・Therefore,duringconstruction,thenumberofinspectionpointscanbeincreased,andtheexperimentaldatawillbemorecomprehensiveandmorerepresentative・Atthesametime,itcanalsotrackanddetectatanytime,andrealizethequalitycontrolintheconstructionprocess・(2)thedetectionmethodistheimpacteffectofsimulatedtrainathighspeedonthesubgradedynamictest,comparedwiththestaticloadtest,itcanreflecttheactualsubgradestress,sothistestmethodisparticularlysuitableforrailway,highway,airportandsoonbythefoundationofqualitymonitoringandtestingdynamicloads・(3)thetestinginstrumentsaresmallinsize,lightinweight(totalweightnotexceeding35kg,singlepieceweightnotmorethan15kg),easytoinstallandcarry,andnoadditionalequipmentisnecessary・Itisveryconvenientandapplicabletodetectthenarrowsectionofsubgrade,suchasLuqiaotransitionsectionandsideslope・(4)inthesamesection,whenthepackingisthesame,ithasagoodcorrelationwiththestaticloadtestindex・Testdata,digitaldisplayandprintonsitetoensureaccurateandobjectivetestresults・(5)withoutnuclearradiationandexhaustpollution,theoperationissafeandenvironmentallyfriendly.Applicationof6EvddynamicmodulusofdeformationinWuhanGuangzhouPassengerDedicatedLinenThesubgradeofWuhanGuangzhoupassengerdedicatedlineisconstructedaccordingtotheconceptofearthworkstructure^,whichrequiresstrictsettlementanddeformation.Accordingtotherequirementsofdesignandspecifications,Evdisrequiredtobetestedonthebaseofsubgrade,subgrade,surfacelayer,transitionsectionandotherindicators(Ev2,N,K30)todeterminewhetheritisqualified・DetectionmethodofEvddetectiontechnologyofsubgradebearingcapacitygreatlyreduced,moreinlinewiththeactualtestresults,thedetectionspeedandefficiencyisgreatlyimproved,theconstructionunits,supervisionfromtheconstructionunittoimproveeconomicandsocialbenefits・7conclusionThecompactioneffectandconstructionqualitytoevaluatesubgrademodulusEvdbydynamicdetectionofsubgradedeformation,isthedevelopmentdirectionoftheroadbedconstructionqualitydetectiontechnology,especiallyforpassengerdedicatedrailwaytrainsrunfaster,theactualsituationofthisdetectionmethodismorescientificandmoreconsistentwiththedynamiccharacteristicsofso订.Withtheuseofsubgradeconstructionmechanizationlevelincreasesandadvancedshipping,paving,compactionmachinery,subgradefillingspeedincreasing,whilethetraditionalstaticloadtestmethodisnotsuitable,thereappearsthephenomenonofwaitingfortestresultsandconstruction;dynamicdeformationmodulusEvdandstaticloadtestingindexesEv2,K30etc・thereisagoodrelationshipbetween,inordertoimprovetheefficiencyofconstruction,constructionqualityandeconomicbenefits,itisnecessarytoadoptandpromotethedetectionofdynamicdeformationmodulus・nEnteryoursearchtermandsubmitthesearchformNetworkChineseengineernetworkPopularTAG:Evddetectiontechnology,subgradeconstruction,applicationOntheexistingproblemsandsuggestionsofconcretestructureinconstructionNext:talkabouthowtomakefulluseofterraindesignandconstructionofconcretemixingplantRelatednewsFactorsaffectingthelifeofINAbearingselfcheckitems2011-08-3010:38,hydraulicsystemtoeliminateleakagemeasures2011-07-2811:25aircompressorprofile2011-07-28commoncausesandprecautionsfortheburningof11:17vibratingscreenmotors2011-07-28themainuseof11:10smokeexhaustvalvesandfiredampers2011-07-2811:02analysisofdynamicbalancingvalverangeandperformance2011-07-2615:48CommentYouarenotloggedinyet!Anonymouscomments(noregistrationrequired)nHotnews2012ChinainternationallowcarbonindustryExpoopeningceremonywillbe21thismonth,theBeijingExhibitionCenteratthePorscheMacanlatestnewsoranewgenerationofiPadwillhelpAppleregainsometabletmarketshareofmultisatellitenavigationsystemisbecomingthenewtrendofEdwardsinSEMICONChina2012demonstratesadvancedvacuumtechnologyDeltanewCNCprogramunveiledatSIMM2012Powerassistedmachinetoolindustrychange,theAmericanMachineToolManufacturingTechnologyAssociation(AMT)andtheUnitedStatesMachineToolDistributorsAssociation(AMTDA)mergedMATHWORKSapplicationmodel-baseddesignforISO26262,theprojectprovidescustomizedservices,blogrecommendmaintenanceexperts:theoverallvehicletestingofthetenmajorprojects,plusinterest,whereisthewayoutofsmallandmedium-sizedhardwareenterprises,carenterprises,marketingworldcupinventory?Abittersweettranscript"beside"friends,letmeteardownyourcamouflagePSAjointventureintoChanganHafei(two)salesisnotopenaroundtheproblemandthinkingofcareerCLuoOneprinciplerunsthroughitall.q订uwangyangphenomenonhowtotreatPoseremployeesoftheBeijingautoshowcarsarticleTherelationshipbetweenmotionmodelsMMhotcommunityassemblyinkeepingtheSteelcharmE355SpecificationSWassemblycannotusethefunctionofweldment・Abouttheproblemofparting,whydoyoulikemodelingwithnSolidworksandthengotoAUTOCADdrawing?Classictrainingcourse一novicemustseeProEWildfire4MO92installedChryslerFiatincorporatedfutureisstillfullofsuspensedatadownloadDL~T917-2005sixsulfurhexafluoridegasdensitydeterminationmethodforDSSuploadGearoilpumpliterarytalentupload,Optistruct,papersabcupload,〃Ansysanalysisexamplesandengineeringapplications",rainydollupload,MAZAKmachinetool,videoOlyuiiuploadProEseriesofFlashteaching_mergesurfaceseeGUI.RRSolidWorkshowtouploaduploadshellsurfaceinmultientitypartsfeaturearrayzyrUploadProE.Wildfire.3.0engineeringdrawings・ViewCobrauploadAutoCADautomaticallydrawthecenterlineoftheLeonuploadaboutus|copyrightstatementrelatedlegal|careers|advertisingservicesitemapcontactus|||LinksCopyright72007-2012;51GCS.COMJingICP;prepareNo.08011767-2;BeijingPublicSecurityBureauHaidianbranch;recordnumberOnehundredandtenbilliononehundredandeightmillionninehundredandthreethousandsixhundredandninety-threeWebsitestatistics