• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database

2001 Vol. 14, No. 4

Display Method:
mici
Quasi一StaticCalculationMethodforDynamicBendingStressof RailSPlicesforFrozenJointofJointlessTrack
LIUXue一yi, LIUAiping
2001, 14(4): 337-340.
Abstract:
AealeulationmethodforthestatiemomentofrailsPliees15presentedbysimplifyingtherail splieesintothestruetureofahingeplustorsionalsprings,and15eomParedwiththeeomparatively aeeuratedoublelaminatedbeammethod,withanermrofabout士10%.Throughmodifyingthe veloeityandthelateralforoeeoeffieients,thequasi一statieealeulationmethodforthedynamiebending stressofrailsplieesforfrozenjoint15proPosedbasedontheealeulationmethodforthedynamie bendingstressofrails.Themethod15validatedbyeomParingtheealeulatedresultsandthedatafrom fieldtest.
PredictionModelforSinkholesalongRailways
XUGUO-qiang, YANGLi一zhong, HEYUYu一long
2001, 14(4): 341-345.
Abstract:
Thefaetorsaffeetingthehappeningofsinkholesalongrailwaysandtherelationshipsbetween thefaetorsareanalyzed.Apredietionmodel15proposedbasedonmain一faetor一analysisanddistanee- estimation.Inthemodel,theoriginalveetorsofthefaetorsarereplaeebysynthetieveetorstoavoid redundantinformationandeountfortheweightsofthefaetors.Thefeasibilityofthemodel15Provedby aPPlieation.
StatistieAnalysisoftheUltimateBearingCaPacity ofFoundationGroundonGravelly50115
LUoShu一xue, TANGWAN-chun
2001, 14(4): 346-349.
Abstract:
Basedontheeolleetedtestdataaboutfoundationloadandtheworkdoneineailierstage, thenominalvalueformofthefoundationultimatebearingeapaeityongravelly50115,thedistribution typeandthestatistieeharaeteristeeoeffieientsareobtained场usingtheprineipleofprobabilitistie ,tatistiesandengineeringexPerienee.ThislaysafoundationforreviseofTheeodefordesignonsubsoil andfound以勿nofrailw叮bridgeandcul公e叮andforthereliabilitydesi,ofsubsoilandfoundation.
ModelTestS加dyofDynamiePerformancesof theSubgradeRelnforcedwithGeocellandGeonet
CAOXin一wen, CAIying, SUjian
2001, 14(4): 350-354.
Abstract:
Fivegroupsofmodeltestsareearriedoutunderthesimulatedfieldeonditionstoexamine thedynamieperformaneesofthesubgradereinforeedwithgeoeellandgeonetrespeetively.Cyelie loaaing15repeatedlo6timesineveoupoftesttosimulatetheaetionofwheelloadonthe subgrade.Thedynamiestress,permanentdeformationandelastiedeformationaremeasuredto eharaeterizethebehaviorofthesubyde,andtheirvariationtrendswiththedynamieloadingare studied.TheeorTelationbetweenthesesubgradePerformaneesandthed”amieload15devefoped,In addition,theirovementstothedynamieperformaneesofsubyadewithgeoeellandgeonetare analyzedandeomPared,andthediffereneesintheireffeetsarealsoanalyzedandeoneluded.
AnalysisofSeismieResPonsesofShenzhenSubwsy
GAOFENG, GANBao一shu
2001, 14(4): 355-359.
Abstract:
Aeeordingtotheanti一seismiedesi,ofShenzhensubwoy,theseismieresponsesofthree typiealeross一seetionsareanalyzedwithNewmarkstep一by一steptimeinte笋tionmethod.Theanalysis15 basedontheresultsofstatiefiniteelementanalysisbyusingreleaseloadingmethodandthoseof vibrationanalysistodefinetherationaltimestepforsub一sPaeeiteratlons.Theweakportionsofthe linerunderseismieloadingaredetermined.
ComPutationoftheUltlmateBearingCaPacityofSteelReinforeed ConCreteLoW-RISeShearWallSwithFrame
HUANCshuang一hua, HUANCXiong一jun
2001, 14(4): 360-364.
Abstract:
Basedonfiniteelementanalysisaswellastheresultsofexperimentalresearehes,amodel15 putfonvardforeouptingtheultimatebearinge叩acityofthelow一riseshearwallsinwhiehbending failureoeeursinframeeolumns,andeomputationalformulasaresetup.TheeomPutedvaluesgivenby theformulasshowagoodag比ementwiththetestvalues.ThiseomPutationmethodprovidesa theo比tiealrefereneefordrawinguPanationaldesigneodeoflow一riseshearwallswithframeinthe futu花
AVehicularGPSCoordinateTransformFormulaandItsAPPlieation
LUODe一an, LIAOLI-qiong
2001, 14(4): 365-368.
Abstract:
AvehieularGPSeoordinatetransformationfoulaanditsworkingproeedureare theoretieallydiseussed.Rationalsimplcation15madetotheooordlnatetransformationformulaof praetiealvehielenavitionandal一timemonitoringsystems.It10shownthatthedynamiepositioning ‘euraeyOfavehieularGPSsystem15eatlydePendentonthedynamiepositioningaeeuraeyofthe hardware.Therefore,thesimplifiedformula15highlyreeommendediftheerrorscausedbyeoordinatetransformationdonotresultinobviousdeereaseind”amiePositioningaeeuraeyofaGPSsystemin whole,
CouPledVibrationofTrainandCable一StayedBridges 初ththeEffeCtsof下Vind
GEYU-mei, ZHOUSHU-hua, LILONG-an
2001, 14(4): 369-373.
Abstract:
InthisPaPer,thetrainsafetyandridingeolllfortofPassengersareanalyzed,bytaking WuhuBridgeovertheYangtZeRiverasanexampleandwindloadontrainsandthebridgeinto eonsideration.Windloading15eonsideredtobefluetuating,thespeedofwhieh15simulatedwith MonteCarlOmethodaeeordingtoSimiusPeetmm.Colnbinedwiththeaerodynamieparametersofthe bridgeandtrainsmeasuredbywindtunneltests,thenaturalwindloadaetingonthebridgeandtrains 15simulated.Dynamiee四ationsofloeomotivesandearsareestablishedaeeordingtothetheo巧of struetural街namies.VibrationequationsforthebridgearederivedusingsPatialbeamelement.Traek irregularity15simulatedwitha脚de6(thebestofthespeeifieation).Thesimulationresultsshowthat themaximumwind印eed15lessthan30而5foratraintorunsafelythroughtheWuhubridge.
Buffeting·RestrainingMeasuresforLongSPan Cable·StayedBridgesunderConstruction
LlYong一le, zhouShu一hua, zhanghuan-xin
2001, 14(4): 374-377.
Abstract:
Thetheo叮ofealeulatingthebuffetingresponseofbridges15introdueed,andthebuffeting resPonseOfaeable一st叮edbridgeatmaximumtwineantileversstageduringereetion15ealeulated.Two buffeting一restrainingmeasures,settingtempora叮eablesandapplyingbraeketbesidetower,are analyzed.Theresultsshowthatthesetwomeasuresareeffieientandpraetieableforlongspaneable- stayedbridgesundereonstruetion.
ChaotieBehaviorsinFinlteSubshifts
XIEJIAN-hua
2001, 14(4): 378-382.
Abstract:
Aneeessaandsuffieienteondition15givenfortopologieallymedfinitesubshiftsthatare deseribedbydireetedgraPhs.Basedonthisresult,thesPeetraldeeompositiontheoremsareProvedby usingpermutationeanoniealformsofnonnegativematriees.Theexisteneeofhypetholieinvariantset possessedbythequadratiemap15re一examined.Somedetailsmissedintherefereneesareprovidedand anewtyPeoffinitesubshiftsisfound.
ComParisonofSeveralBaekwardCharacteristie DifferenceSchemesforPureConvectiveEquations
DONGBing, ZHUBing, ZHOUBen一kuan
2001, 14(4): 383-386.
Abstract:
Severalbaekwardeharaeteristiediffereneesehemesthathavebeenemployedtosolvepure eonveetiveequationsarereviewedinthispaPer.Theaeeuraeyofthesesehemes15eomParedwithtwo typiealtestexamples.Theresultsshowthat,withtheinereaseintheinte印olationpoints,the eomputingaeeuraeyinereases,buttheeomPutingeffieieneydeereases.It15alsoshownthatthe feasibilityOfasehemedependsoneonveetiveProfiles,eitherflatorsharp.
ThermalResidualStressesinAlignedShortFiber ReinforcedMetalMatrixComPosites
KANGGuo一zheng, CAOqing
2001, 14(4): 387-391.
Abstract:
Basedonthesinglefibermodelofalignedshortfiberreinforcedmetalmatrixeomposites, thethermalresidualstressesandtheirdistributionareealeulatedwiththeaxi一symmetriealelasto一plastie finiteelementmethod.Theeffeetsofvariousmierostrueturalparametersonthermalresidualstressesare diseussed.Theeffeetsofthermalresidualstressesonstresstransferinali,edshortfibereomposite underaxiallyappliedloadareanalyzed.It15shownthattheunmatehedthermalstrainresultsin eompressionalstressesinthefibers,tensilestressesinthematrix,andeompressionalnormalstresses oninterfaees.Thermalresidualstressesdegradesthedegreeofstresstransferbetweenmatrixand fibers,andharxnfultotheimProvementofthemeehaniealpropertiesoftheeomposite.
SimulationofMeshingProeessofSPurGearTeetwithWornSurfaces
SONGXiao一Xin
2001, 14(4): 392-395.
Abstract:
Thegearteethandmeshinglinearedistortedinthemeshingproeessasaresultofwearing Anumeriealmodelfortoothprofiles15ProposedaeeordingdataofthetemPerature.sPurgearsinthetransmissionboxofaneleetrifiedloeomotive.tothemeasuredTheneeessaryeonditionsforworngearstomeshandthengearfunetionsofthemeshingpointseharaeteristiesofthegearsinvariousextentofwearingandtheeorrespond ealeulated.afeingderived.Themeshingmeshinglinesarealso
AnAssignmentModelofDynamieTransPortation NetworkFlowsforSystemOPtimization
YEHUAI-zhen, ZHOUXIAN-wei, CHENCHANG-he
2001, 14(4): 396-400.
Abstract:
Assignmentproblemoftransportationnetworkflows15akeyteehniqueofintelligent transportationsystem,andit15veimportanttobuildtheassignmentmodeloftransPortationnetwork andtodesignthe.relevantalgorithm.Inthispaper,amodelfortheoptimaleontroloftheassignment problemofthedynamietransportationnetworkflows15built,andthenit15transformedintoasimple andspeeialnonlinearPronuningproblembyaseriesofinte1transforms.Overandabove,the authorfoeusesonthesimplifieationoftheoPtimaleontrolmodeltofurtherstudythepropertiesand algorithmdesi,ofthesimplifiedmodel,
ModelandAlgorithmsforMixedFleetVehicleRoutingProblem withSoftTimeWind0WS
yuanQing一da, du-wen, ZHOUZai一ling
2001, 14(4): 401-406.
Abstract:
Thetypiealvehieleroutingpmblem15expandedtothesituationthateustomershavethe restrietionofsofttimewindowsandadePothasvariouskindsofvehielestodistribute.After eonstruetingamathematiealmodelfortheProblem,thispaPerfoeusesontheintroduetionOfthedesign ProeedureofTsalgorithmforsolvingtheProblem.Andthen,eombinedwiththeadaPtivememory proeedure,thepseudo一eodedeseriptionof仆algorithmandanexamplearepresented.
ComPuterAidedCyclingArrangementofPostalTruckS
YANGwei, HEYi一gong, DuWEN
2001, 14(4): 407-411.
Abstract:
TheeoneePtofeyelingarrangementofPostaltrueks15introdueed.Amathematiealmodelfor theeyelingarrangementofpostaltrueksofprovineialpostaltransportationeenters15pmposedbasedon thepraetieesintheindust.Itsalrithmandtheflowehartofsoftwarearepresented.Examplesof applieationofthesoftwareinSiehuanandTibetarealsopresented.Theproposedmethodappliesalso toarrangementofothertypesoftransport.
TheRationalScaieofHu幻以anResourcesfor theRailwayTransPortationIndustryinChina
ZHAODONG-mei, ZHANGJIAN-yong
2001, 14(4): 412-415.
Abstract:
Atpresent,humanresoureesslusbeeomesaveseriousproblemfortherailwy transportationindustryinChina.Inthispaper,therationalsealeofhumanresoureesfortherailw叮 transportationindustryinChinaisanokzedquantitatively.Theresultsindieatethattherationalseale15 1.40miilionsto1.68millions.SomesuggestionsarePutfogardtoredueethesu印lus.
EstimatingtheEcono而cBenentofRunningTiltingTrains intheSouthwestofChina
LIZONG-ping, XUJie, ZHOUZAI-ling
2001, 14(4): 416-420.
Abstract:
Byanalyzingtheeharaeteristiesandapplieationseopeoftiltingtrains,thispaperdiseusses theneeessityandfeasibilityOfrunningthiskindoftrainsinthesouthwestofChina.Then,byfinaneial analysis,itestimatestheeeonomiebenefitsofrunningthetiltingtrainsinthesouthwestofChinainthe years2005and2015.Theresultsshowthatit15feasibletorunthetiltingtrainsinthesouthwestof Chinabeeauseiteanbringeonsiderableeeonomieandsoeialbenefits,andthatthebenefitswillbe moreremarkableifehe即erequiPmentmadeinChina15adopted.
nExPloratoryStudyonMeasuresto FormulateFreeway,STollStandard
LONCYong, JiangGe-fu, FengYun-cai
2001, 14(4): 421-424.
Abstract:
InordertoimProvethemanagementandadministrationofthefreewaysinPeratlon, rationallyassignthesoeialresourcesandaehievethesustainabledeveloPmentoffreeways,the author analyzesthefaetorsthatinflueneethefreew叮,5tollstandard,andexPlorestoforeeastthetotal Basedonthesefaetorsandthetolltotal,atollstandardmodel15established.
ImProvedBPAlgorithmand115APPlicationinPre山etionofStockPrice
xiangXiao一dong, guohui一huang, diaoshang一min
2001, 14(4): 425-427.
Abstract:
InordertospeedtheeonvergeneeofBPalgorithm,thisPaPerPutsfo哪ardanew stimulationfunetion,whiehhasanexPlieitphysiealmeaningand15abletorefleettheoptimization esseneeofhumanbeings,brains.ThroughdynamieallyadjustingtheParametersofthestimulation funetionandeolnbiningotherimprovedBPalgorithms,theauthorsusethestimulationlunetionto predietthePrieeofastoekandgetasatisfaeto巧result.ontheotherhand,thepredietabilityofstoek prieesalsoProvesthenoneffeetiveoftheimmaturestoekmarketsofChinafromanotherangle.Aslong a,aproperpredietionmod6115ehosen,peopleeangetmoreprofitsthanaveragemarketearnings.
AgUityEvaiuatingModelofEnterprises
WUZhen一ye, MAJun一gang
2001, 14(4): 428-432.
Abstract:
Throughtheanalysisofthefactorsthatidueneetheagilityofentrprises,ahierarchied graphoftheevahiation叮stem15built,andtheweightsoftheoefaeto玲areobtainedwithattribute hiehiealmethod.Thenthemulti一gradefuzZyassessmentmethod15usedinevaluation.Theevaluationresultsofsinglefaetorsareeressedthrougharadargranh.Afterthefinals”thetie evaluation,theorderofente印risesinthesameagilityelass15sortedaeeordingtotheagility.In addition,throughtheevaluationOfthetransformingabilityofenterprises,thelocationsofthe enterpriseoinagilesPacearedeterminedandshowningraPh.
Value-at-RiSkMethodforPortfolioriskEStimation
TIANJun
2001, 14(4): 433-436.
Abstract:
Thevalue一at一risk(VaR)modeldevelopedreeently15amathematiealmodeltoestimat。and eontrolfinaneialrisk.Thedisadva乓tagesoftraditionalmethodsarepointedout.TheVaRmethodfor porifolioriskestimation15proposed.IntheproPosedmethod,theVaRvalue15ealeulatedwith geometrieyieldthat15definedbylogarithmieeostratio.ThelimitationsofVaRmethodaroalso exPlieated.
KnowledgeRePresentationandReasoningonPatternClasses
PANWU-Ming, XUYANG, LITIAN-Rui
2001, 14(4): 437-439.
Abstract:
ThereeommonlyexisttherelationshipsbetweenPieeesofknowledgethatarerequiredininterpolatingreasoning.However,there15notaframeworkavailabletopresenttheserelationships. Knowledge15involvedimpliedlyinfuzzyreasoning.Inthispaper,aknowledgerepresentationframe, patternelasses,15proposedtorepresenttherelationships.Thereasoningmethodwithintheframe15 alsoputforward.Thismethodappliestowiderareasthantheeonventionalfuzzyreasoningdoes·
AnoverallSehemeforHighTemPeratureSuPercondueting MaglevMeasurementSystem 一DataAequisitionandMotionControl
ZHANGCui一fang, HUANGHai一yu, DENGChang一yan
2001, 14(4): 440-443.
Abstract:
Anoverallsehemeforthedataaequisitionandmotioneontrolofhightemperature supereonduetingMaglevmeasurementequipment15presented.Thehardwareandsoftwaredesignsof thesehemearediseussedelaborately.Usingthesystem,theProPertiesofsupereonduetingbulk magnetseanbedeterminedautomatieallyundervarioustesteonditions.Satisfaetoyresultsareobtained inthepraetiealapplieation.
AnAlgorithmforshortestPathofDouble·IooP NetworkSnL(N,h)(hIN)
CHENZhong一xue, GEPan
2001, 14(4): 444-447.
Abstract:
Thispaperanalyzesakindofdouble一loopnetworksDL(N,h),wherethegreatesteommon divisor15equaltoh.ItprovesthattheshortestPathbetweenanytwogivennodesinthesenetworks15 oneandonly,andeanbeexpressedwithsimPlemathematiealequations.Theequationsfortheshortest patharepresented,andbasedonthemasimplealgorithm15proposedtofindtheshortestpathforany pairofnodesinthesenetworks.Inaddition,thediameterandotherissuesaboutthiskindofnetworks arediseussed.It15provedthattheaveragedistaneebetweentwonodes15equaltohaifofthediameter.
AColltrolStrategyofDistrictHeatingsystems
2001, 14(4): 448-451.
Abstract:
ByaoptingtheadvaneedteehniquesusedinnorihernEuroneandtakigthepraetieesin Chinaintoaeeount,anewstrategyforautomatieeontrolofdistrietheatingsystems15proposed.The heatingsystemautomationwillfoseeontrolinaeentralizedanddistributedheatingsystemextensively usedinnorth.Europewhentheheatsource15insuffieient.Thisproblem15solvedbyusingthe proposedstratgy.Alsopresented15amethodtodeterminetheworstloopandtoealeulatethegiven Pressurediffereneesintheworstloopinaheatinsystem.