简介:Asanoveltypeoffoundationinbeachandshallowsea,thebucketstructureisespeciallysuitableforcomplexconditionssuchassoftclaygroundandtheworsetypesofseaenvironments.Inthispaper,thebearingcapacityofamulti-bucketstructureisstudiedbyexperimentswithasinglebucketandfour-bucketfoundationinasaturatedsandlayer.Basedontheexperimentaldataandnumericalanalysisresults,thebearingcapacitybehaviorandthebucketgroupeffectarecomparedandanalyzed.Furthermore,someinfluentialfactors,suchasthesoiltype,theratiooflengthtodiameterL/D,theratioofthebucketspacingtothebucketdiameterS/D,andthebucketnumberareintroducedandtheireffectsonthemulti-bucketstructuralcapacityareinvestigatedTheverticalstaticcapacityadjustmentfactorisintroducedtoevaluatethebucketgroupeffectsofthemulti-bucketfoundation.
简介:三桶、四桶近海有转移力量的结构的一种新形式的风力量基础在这被建议纸,和foundation-soil-transition结构的综合有限元素模型被使用ABAQUS建立。建议基础的带的能力在垂直负担,水平负担和弯曲时刻下面被学习。多斗式的基础的垂直适用能力能被垂直适用能力粗略地估计,这能被看见单个桶;三桶的基础计划的水平适用能力被排水量控制,当四桶的基础计划的被土壤的内部力量控制时。而且,带的能力被形成由的全面结构提供在土壤前多斗式失败。与常规单个桶的基础相比,主要有紧张和压力,被用于多斗式的基础,以便基础的带的能力能充分被利用。土壤失败的概率能很好与建议多斗式的基础被减少,并且转移力量的结构的压力传播通过有可变剖面图的钢横梁是更一致的。
简介:In2010,thefirstoffshorewindturbinewithintegratedinstallationwasestablishedinQidongseaareaofJiangsuProvince,China,whichledtotheimplementationphaseofone-step-installationtechniquebasedonthedesignandconstructionoflarge-scalebucket-top-bearing(LSBTB)bucketfoundation.ThecriticaltechniqueofLSBTBbucketfoundationincludedself-floatingtowing,penetrationwithadjustmentofhorizontallevelness,removabilityandone-step-installation.Theprocessofone-step-installationincludedtheprefabricationofLSBTBbucketfoundationinonshoreconstructionbase,installationanddebuggingofwindpower,overallwatertransportationoffoundationandwindpowersystem,andinstallationoffoundationandoffshorewindturbineontheappointedseaarea.Thecostofone-step-installationtechniquewasabout5000Yuan/kW,whichwas30%-50%lowerthanthatoftheexistingtechnique.TheprefabricationofLSBTBbucketfoundationtookabouttwomonths.Duringtheone-step-installationprocess,theinstallationanddebuggingofwindpowerandoverallwatertransportationneedaboutonetotwodaysinseaareawithin35mdepth.Aftertheproposedtechniqueisindustrialized,thecostwillbefurtherreduced,andtheinstallationcapacityisexpectedtobeupto500windturbinesperyear.
简介:ResearchersinthepasthadnoticedthatapplicationofArtificialNeuralNetworks(ANN)inplaceofconventionalstatisticsonthebasisofdataminingtechniquespredictsmoreaccurateresultsinhydraulicpredictions.MostlytheseworkspertainedtoapplicationsofANN.Recently,anothertoolofsoftcomputing,namely,GeneticProgramming(GP)hascaughttheattentionofresearchersincivilengineeringcomputing.ThisarticleexaminestheusefulnessoftheGPbasedapproachtopredicttherelativescourdepthdownstreamofacommontypeofski-jumpbucketspillway.ActualfieldmeasurementswereusedtodeveloptheGPmodel.TheGPbasedestimationswerefoundtobeequallyandmoreaccuratethantheANNbasedones,especially,whentheunderlyingcause-effectrelationshipbecamemoreuncertaintomodel.
简介:InATMnetworks,burstysourcescanbedescribedastheInterruptedBernoulliProcess(IBP).Withtheuseofthethinprocesstheory,theProbabilityGeneratingFunction(PGF)oftheIBPisobtained.Aniterativealgorithm,whichcanbeusedtocalculatetheIBPprobabilitydistribution,ispresented.Theburstysource’sequivalentdescriptionisdiscussed.ItisproposedthattheleakybucketoutputprocesscanbeapproximatelydescribedastheIBP.Theaccuracyoftheanalyticalresultshasbeenlargelyvalidatedbymeansofthesimulationapproach.Moreover,howtoimproveitsaccuracyisdiscussed.Thesmoothingfunctionoftheleakybucketalgorithmisquantitativelyanalyzed.
简介:由于mediopatellar襞的眼泪胀大和前面的痛苦的膝的一个案例被报导。锁住的patellofemoral关节和膝的耐心的也感到的笨蛋。在arthroscopic检查下面,厚、含纤维的襞被发现中间到膝盖骨,并且沿着到infrapatellar脂肪的从中间的膝盖骨的支持带的襞的桶眼泪垫。极化的显微镜的检查显示出骨胶原纤维碎片和轻思考性质的损失。Neuroimmunohistology在裂缝附近在区域建议了synovial襞神经分布的起来规定。这可能与疼痛有关。mediopatellarplicacaused疼痛的桶眼泪和膝的锁比以前报导是更普通的。
简介:有在直径的30m和在高度的6m的大规模桶基础被用作风汽轮机的基础。宽浅的基础与有到直径的高度的高比率的传统的桶基础不同。新类型基础的cover-load-bearing模式能抵抗更多的外部装载。完成适用的模式,在桶内的泥泞土壤应该被增强,它将改进土壤力量并且转变为土壤和基础整个部分抵抗外部装载。增强方法的真空和电镀物品渗透的土壤在实验被使用。结果证明泥泞土壤的适用的行为被否定压力和电镀物品渗透的效果有效地改进,并且有更好的力量的改进泥泞土壤能和桶基础工作,意味着新桶基础的最高封面的适用模式被完成。在增强过程的土壤期间,基础向下移动了,即,基础的解决几乎在真空和电镀物品渗透的方法引起的预装的过程期间被完成。
简介:包分类被学习十年了;它基于一个给定的规则集合分类包进特定的流动。当定义软件的网络被建议,包分类的一个最近的趋势是放大五元组的模型到多元组。一般来说,多重地上的包分类是一个复杂问题。尽管大多数存在softwarebased算法在实践被证明非凡,他们对经典五元组的模型仅仅合适并且对困难被扩大规模。同时,硬件特定的答案不可弯曲、昂贵,并且他们中的一些是消费的力量。在这份报纸,我们为多核心系统建议一条通用的多维的包分类途径。在我们的途径,新奇数据结构和四个基于分解的算法被设计优化分类并且规则更新。为多地规则,一个规则集合根据领域的数字被切成几部分。每部分独立地工作。这样,这些地在平行被寻找,所有部分结果最后一起被合并。表明我们的途径的可行性,我们实现一个原型并且评估它的产量和潜伏。试验性的结果证明我们的途径比另外的分解底的算法和43%更低的潜伏的完成40%更高的产量平均比另外的算法的统治增长更改。而且,我们的途径平均节省39%记忆消费并且有好可伸缩性。
简介:Synchronousoutputofonebeamline’stwomegawatthotcathodebucketionsourcesisrequiredwhenNeutralBeamInjector(NBI)worksontheExperimentalAdvancedSuperconductingTokamak(EAST).NeutralBeamInjectorControlSystem(NBICS)realizessynchronousoutputandasynchronousoutputoftwoionsourceswithnetworkcommunicationandhardwaretriggers.Andthesynchronoustimecanbesetbyoperator.Insynchronousmode,twomegawatthotcathodebucketionsourcescanproduceneutralbeamsatanyrelativetimewithhigherenergythantwosources’asynchronousoutput.Twomegawatthotcathodebucketionsources’synchronousoutputmakesanimportantcontributiontoNBIsystemof4-8MWwith10-100spulselengthandprovidesmoreandbetterparametersforEASTphysicalexperiments.
简介:Centrifugeexperimentsarecarriedouttoinvestigatetheresponsesofsuctionbucketfoundationsunderhorizontaldynamicloading.Theeffectsofloadingamplitude,thesizeofthebucketandthestructuralweightonthedynamicresponsesareinvestigated.Itisshownthat,whentheloadingamplitudeisoveracriticalvalue,thesandattheupperpartaroundthebucketsoftensorevenliquefies.Theliquefactionindex(excessporepressuredividedbyinitialeffectivestress.Inthispaper,thedevelopmentaldegreeofexcessporepressureisdescribedbyliquefactionindex)decreasesfromtheupperparttothelowerpartofthesandfoundationintheverticaldirectionanddecreasesfromneartofarawayfromthebucket′ssidewallinthehorizontaldirection.Largesettlementsofthebucketandthesandaroundthebucketareinducedbythehorizontaldynamicloading.Thedynamicresponsesofthebucketofasmallerheight(whenthediameteristhesame)areheavier.Acycliccracksomedistancenearthebucketoccursinthesand.
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简介:Multi-cellmulti-usermultiple-inputmultiple-output(MC-MU-MIMO)isapromisingtechniquetoeliminateinter-userinterferenceandinter-cellcochannelinterferenceinwirelesstelecommunicationsystems.AsthelargenumberofusersinthesystemandthelimitednumberofsimultaneouslysupportableuserswithMC-MU-MIMO,itisnecessarytoselectasubsetofuserstomaximizethetotalthroughput.However,thefullycentralizeduserselectionalgorithmsusedinsinglecellsystem,whichwillincurhighcomplexityandbackhaulloadinmulti-cellcooperativeprocessing(MCP)systems,arenotsuitabletoMC-MU-MIMOsystems.ThisarticlepresentsatwocascadeduserselectionmethodforMCPsystemswithmulti-cellblockdiagonalization.Inthispaper,alocaloptimalsubsetofusers,whichcanmaximizethelocalsumcapacity,isfirstchosenbythegreedymethodineverycooperativebasestationinparallel.Then,allthecooperativebasestationsreporttheirlocaloptimaluserstothecentralunit(CU).Finally,theglobaloptimalusers,whichcanmaximizetheglobalsumcapacityofMCPsystems,areselectedfromtheaggregatedlocaloptimalusersattheCU.Thesimulationresultsshowthattheproposedmethodperformscloselytotheoptimalandcentralizedalgorithm.Meanwhile,thecomplexityandbackhaulloadarereduceddramatically.