简介：为在用部分纠缠的州的资源的一个量通讯系统的信息转移的传统的方法是量蒸馏或直接远距传物。以便减少在hop-by-hop传播花费并且在每个节点独立地执行的等待的时间，我们建议从来源节点与部分纠缠的状态衔接方法到teleport量状态到目的地节点的量。我们也证明衔接电路的设计的特定的量为越过多重中间的节点的部分纠缠的状态远距传物是可行的。比作二个传统的方法，我们的部分，纠纷量衔接方法使用更简单的逻辑门，更好的安全，和罐头处于更少的量资源状况被使用了。

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简介：Thispaperinvestigatestheoreticallytheelectronictransmissionspectraofthethreeterminalpyrenemolecularbridgeandthequantumcurrentdistributiononeachbondbythetight-bindingmodelbasedonnonequilibriumGreen'sfunctionandthequantumcurrentdensityapproach,inwhichoneπmolecularorbitalistakenintoaccountpercarbonatomwhentheenergylevelsandHOMO-LUMOgapareobtained.Thetransmissionspectrashowthattheelectronictransmissionofthethreeterminalpyrenemolecularbridgedependsobviouslyontheincidentelectronicenergyandthepyreneeigenenergy.Thesymmetricalandoscillationpropertiesofthetransmissionspectraareillustrated.Anovelplus-minusenergyswitchingfunctionisfound.Thequantumcurrentdistributionshowsthattheloopcurrentsinsidethepyreneareinduced,andsomebondcurrentsaremuchlargerthantheinputandtheoutputcurrents.Thereasonswhytheloopcurrentsandthelargerbondcurrentsareinducedarethephasedifferenceoftheatomicorbitsandthedegeneracyofthemolecularorbits.ThecalculationsillustratethatthequantumcurrentdistributionsareingoodagreementwithKirchhoffquantumcurrentconservationlaw.

简介：Inordertoresolvethetrafficcongestionproblem,manycable-stayedbridgesaredesignedwithalargewidthtospanratio.Thisresultsinsignificantshearlageffecttocausenonuniformstressdistributionalongtheflangesofthebeamofbridge.ThispaperreportsstudyontheshearlageffectoftheLanzhouXiaoxihuYellowRiverBridge.A3Dfiniteelementmodelofthebridgewasdevelopedandfiniteelementanalysis(FEA)wasdonetoobtainthetheoreticalresults.Toevaluatethetheoreticalresults,ascaledmodelwasmadetoconductstatictestinlaboratory.TheexperimentresultsaccordedwiththeresultsobtainedbyFEA.ItisprovedthatFEAisaneffectivemethodtopredictshearlageffectofbridgesofthistype.

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简介：Fieldmeasurementofstrongwindcharacteristicsisofgreatsignificanceforthedevelopmentofbridgewindengineering.LocatedineastChina,theRunyangSuspensionBridge(RSB)withamainspanof1490misthelongestbridgeinChinaandthethirdlongestintheworld.Duringthelastfouryears,theRSBhassufferedfromtyphoonsandstrongnorthernwindsonmorethantenoccasions.TodeterminethestrongwindcharacteristicsoftheRSB,windmeasurementdataobtainedfromfieldtestsduringstrongwindsanddatafromthewindenvironmentmonitoringsubsystemofthestructuralhealthmonitoringsystem(SHMS)oftheRSBwerecombinedtoanalyzethewindspeedanddirection,variationinwindspeedwithheight,turbulenceintensity,turbulenceintegrallength,windfrictionspeedandthepowerspectrum.Comparativestudiesonthecharacteristicsofthesedifferentstrongwindswerecarriedoutbasedonthecurrentwind-resistantdesignspecificationforhighwaybridges.ResultsshowedthatsomeregularityinwindcharacteristicscanbefoundinthesedifferenttyphoonspassingthroughtheRSB.Thedifferencebetweenastrongnorthernwindandatyphoonisrelativelyclear,andinsummerthetyphoonisthedominantwindloadactingontheRSB.Inaddition,thereweresomedifferencesbetweenthemeasuredstrongwindcharacteristicsandthevaluessuggestedbythespecification,especiallyinrespecttoturbulenceintensityandturbulenceintegrallength.ResultsprovidemeasurementdataforestablishingastrongwindcharacteristicdatabasefortheRSBandfordeterminingthestrongwindcharacteristicparametervaluesofthiscoastalareaineastChina.

简介：为对在装载的轮船影响下面的桥结构的动态需求评价，收养与合理精确性允许快速的分析的分析模特儿可能是谨慎的。此处，一个非线性的动态宏元素被建议并且实现了确定桥基础的需求使遭到了装运碰撞。在建议非线性的宏元素，在平行的一个有弹性塑料的弹簧和缓冲筒的联合被采用与紧张率效果描述轮船鞠躬的机械行为。用建议宏元素基于分析模型，在5000死重吨位(DWT)下面的一个典型基础轮船碰撞被讨论。我们的分析显示用非线性的宏元素的结构的回答从高分辨率模型同意结果，但是建议方法的效率和可行性在实际应用程序显著地增加。而且，在一些当前的设计代码(AASHTO，JTGD60-2004，和TB10002.1-2005)之间的比较和发达动态分析方法建议这些设计代码可以被改进，到至少在结构的需求上考虑动态扩大的效果。

简介：A3DfiniteelementmodelfortheTaizhouYangtzeRiverBridge,thefirsttriple-towerlong-spansuspensionbridgeinChina,isestablishedbasedonthenonlinearfiniteelementsoftwareABAQUS,andthedynamiccharacteristicsofthebridgeareanalyzedusingtheLANCZOSeigenvaluesolutionmethod.Thestudyfocusesontheeffectsofthevertical,lateralandtorsionalstiffnessofthesteelboxgirder,therigidcentralbuckleandtheelasticrestraintsconnectingthetowersandthesteelboxgirderonthedynamiccharacteristicsofthetriple-towersuspensionbridge.Ourresultsshowthat,ingeneral,thedynamiccharacteristicsofthetriple-towersuspensionbridgearesimilartothoseoftwo-towersuspensionbridges.Thevertical,lateralandtorsionalstiffnessofthesteelboxgirderhavedifferenteffectsonthedynamiccharacteristicsoftriple-towersuspensionbridges.Theelasticre-straintshaveamoresignificanteffectonthedynamiccharacteristicsthanthecentralbuckle,anddecreasingthestiffnessoftheelasticrestraintsresultsintheappearanceofalongitudinalfloatingvibrationmodeofthebridge.Also,rigidcentralbuckleshaveagreaterinfluenceonthedynamiccharacteristicsoftriple-towersuspensionbridgesthanonthoseoftwo-towersuspensionbridges.Theresultsobtainedcouldserveasavaluablenumericalreferenceforanalyzinganddesigningsuper-long-spantriple-towersuspensionbridges.

简介：Anovelmodelisproposedwhichcomprisesofabeambridgesubjectedtoanaxialloadandaninfiniteseriesofmovingloads.Themovingloads,whosedistancebetweentheneighbouringonesisthelengthofthebeambridge,coupledwiththeaxialforcecanleadthevibrationofthebeambridgetocodimension-twobifurcation.Ofparticularconcernisaparameterregimewherenon-persistencesetregionsundergoatransitiontopersistenceregions.Theboundaryofeachstriperepresentsabifurcationwhichcandrivethesystemoffakindofdynamicsandjumptoanotherone,causingdamageduetotheresultingamplitudejumps.TheGalerkinmethod,averagingmethod,invertiblelineartransformation,andnearidentitynonlineartransformationsareusedtoobtaintheuniversalunfoldingforthecodimension-twobifurcationofthemid-spandeflection.Theefficiencyofthetheoreticalanalysisobtainedinthispaperisverifiedvianumericalsimulations.

简介：AnumberofdrybridgeshavebeenbuilttosubstitutefortheroadbedontheQinghai-TibetRailway,China.Theaimofthisstudywastoinvestigatetheexothermicprocessofcast-in-place(CIP)pilefoundationofadrybridgeanditsharmtothestabilityofnearbyfrozenground.Wepresent3Dheatconductionfunctionsofaconcretepileandoffrozengroundwithrelatedboundaries.Ouranalysisisbasedonthetheoryofheatconductionandtheexponentlawdescribingtheadiabatictemperaturerisecausedbyhydrationheat.ResultsundercontinuousandinitialconditionswerecombinedtoestablishafiniteelementmodelofaCIPpile-frozengroundsystemforadrybridgeunderactualfieldconditionsincoldregions.NumericalresultsindicatedthattheprocesscouldeffectivelysimulatetheexothermicprocessofCIPpilefoundation.ThermaldisturbancetofrozengroundunderalongdrybridgecausedbythecastingtemperatureandhydrationheatofCIPpileswassubstantialandlong-lasting.Thesimulatedthermalanalysisresultsagreedwithfieldmeasurementsandsomesignificantrulesrelatingtotheproblemwerededucedandconclusionsreached.