简介：在靠近范围的摄影测量学，3D信息获得基于图象匹配。代码标记的应用程序帮助改进自动匹配和匹配的精确性的水平。这份报纸调查惯性椭圆算法的应用程序编码标记匹配。我们能与某个边界计算一个目标的惯性椭圆。首先，方法被用于一个单个代码标记；角度并且可伸缩是有效的。然后，纸介绍多编码由惯性椭圆匹配方法的标记。旋转和同形异义图象的可伸缩的变化能被惯性椭圆算法计算。这些参数能被用于在任意的态度匹配靠近范围的摄影测量学的代码标记。

简介：第四级的代码的特征被分析。区分三角方向的规则被给出。邻居由从回到前面分解第四级的代码发现的一个算法在这篇论文被介绍。在这个算法和Bartholdi之间的时间复杂性的对比的分析是算法被接近。结果说明一般水准消费了这个算法的时间，这是大约23.66%Bartholdi的算法。

简介：Addingdampersisacommonlyadoptedseismicriskmitigationstrategyformodernbuildings,andthecorrespondingdesignprocedureofdampershasbeenwellestablishedbytheChineseBuildingCode.Eventhoughalltypesofdampersaredesignedbythesameprocedure,actualseismicperformanceofthebuildingmaydifferfromonetotheothers.Inthisstudy,anine-storybenchmarksteelbuildingisestablished,andthreedifferentandtypicaltypesofdampersaredesignedaccordingtotheChineseBuildingCodetorealizestructuralvibrationcontrolunderstrongearthquakeexcitation.Theseismicresponseoftheprototypebuildingequippedwithaviscoelasticdamper,viscousdamperandbuckling-restrainedbrace(BRB)subjectedto10earthquakerecordsarecalculated,andIncrementalDynamicAnalysis(IDA)isperformedtodescribeprogressivedamageofthestructureunderincreasingearthquakeintensity.Intheperspectiveoffragility,itshowsthattheviscoelasticdamperhasthehighestcollapsemarginratio(CMR),andtheviscousdamperprovidesthebestdriftcontrol.BoththeBRBandviscoelasticdamperscaneffectivelyreducetheflooraccelerationresponsesinthemid-risebuilding.

简介：HurricanesKatrinaandRitaresultedinthelargestnumberofplatformsdestroyedanddamagedinthehistoryofGulfofMexicooperations.Withthetrendofglobalwarming,sealevelrisingandthefrequencyandintensityoftyphoonincrease.Howtodetermineareasonabledeckelevationagainstthelargesthurricanewaveshasbecomeakeyissueinoffshoreplatformsdesignandconstructionfortheunificationofeconomyandsafety.Inthispaper,themultivariatecompoundextremevaluedistribution(MCEVD)modelisusedtopredictthedeckelevationwithdifferentcombinationoftide,surgeheight,andcrestheight.ComparedwithpracticerecommendedbyAmericanPetroleumInstitute(API),thepredictionbyMCEVDhasprobabilisticmeaninganduniversality.

简介：UnreinforcedMasonry(URM)isthemostcommonpartitioningmaterialinframedbuildingsinIndiaandmanyothercountries.Althoughitiswell-knownthatunderlateralloadingthebehaviorandmodesoffailureoftheframebuildingschangesignificantlyduetoinfill-frameinteraction,thegeneraldesignpracticeistotreatinfillsasnonstructuralelementsandtheirstiffness,strengthandinteractionwiththeframeisoftenignored,primarilybecauseofdifficultiesinsimulationandlackofmodelingguidelinesindesigncodes.TheIndianStandard,likemanyothernationalcodes,doesnotprovideexplicitinsightintotheanticipatedperformanceandassociatedvulnerabilityofinfilledframes.ThispaperpresentsananalyticalstudyontheseismicperformanceandfragilityanalysisofIndiancode-designedRCframebuildingswithandwithoutURMinfills.InfillsaremodeledasdiagonalstrutsasperASCE41guidelinesandvariousmodesoffailureareconsidered.HAZUSmethodologyalongwithnonlinearstaticanalysisisusedtocomparetheseismicvulnerabilityofbareandinfilledframes.ThecomparativestudysuggeststhatURMinfillsresultinasignificantincreaseintheseismicvulnerabilityofRCframesandtheireffectneedstobeproperlyincorporatedindesigncodes.

简介：Buildingcodeshavewidelyconsideredtheshearwavevelocitytomakeareliablesubsoilseismicclassification,basedontheknowledgeofthemechanicalpropertiesofmaterialdepositsdowntobedrock.Thisapproachhaslimitationsbecausegeophysicaldataareoftenveryexpensivetoobtain.Recently,otheralternativeshavebeenproposedbasedonmeasurementsofbackgroundnoiseandestimationoftheH/Vamplificationcurve.However,theuseofthistechniqueneedsaregulatoryframeworkbeforeitcanbecomearealisticsiteclassificationprocedure.ThispaperproposesanewformulationforcharacterizingdesignsitesinaccordancewiththeAlgerianseismicbuildingcode(RPA99/ver.2003),throughtransferfunctions,byfollowingastochasticapproachcombinedtoastatisticalstudy.Foreachsoiltype,thedeterministiccalculationoftheaveragetransferfunctionisperformedoverawidesampleof1-Dsoilprofiles,wheretheaverageshearwave(S-W)velocity,Vs,insoillayersissimulatedusingrandomfieldtheory.Averagetransferfunctionsarealsousedtocalculateaveragesitefactorsandnormalizedaccelerationresponsespectratohighlighttheamplificationpotentialofeachsitetype,sincefrequencycontentofthetransferfunctionissignificantlysimilartothatoftheH/Vamplificationcurve.ComparisonisdonewiththeRPA99/ver.2003andEurocode8(EC8)designresponsespectra,respectively.Intheabsenceofgeophysicaldata,theproposedclassificationapproachtogetherwithmicro-tremormeasurescanbeusedtowardabettersoilclassification.

简介：ThispaperpresentsacomparisonbetweentheChineseCodeGB50011-2001andtheInternationalStandardISO3010:2001(E),emphasizingthesimilaritiesanddifferencesrelatedtodesignrequirements,seismicactionsandanalyticalapproaches.Similaritiesinclude:earthquakereturnperiod,conceptualdesign,siteclassification,structuralstrengthandductilityrequirements,deformationlimits,responsespectra,seismicanalysisprocedures,isolationandenergydissipation,andnonstructuralelements.Differencesexistinthefollowingareas:seismiclevels,earthquakeloading,modedampingfactorsandstructuralcontrol.