简介：Theconceptofhealthmonitoringisakeyaspectofthefieldofmedicinethathasbeenpracticedforalongtime.Acommonlyuseddiagnosticandhealthmonitoringpracticeispulsediagnosis,whichcanbetracedbackapproximatelyfivethousandyearsintherecordedhistoryofChina.Withadvancesinthedevelopmentofmodemtechnology,theconceptofhealthmonitoringofavarietyofengineeringstructuresinseveralapplicationshasbeguntoattractwidespreadattention.Ofparticularinterestinthisstudyisthehealthmonitoringofcivilstructures.Itseemsnatural,andevenbeneficial,thatthesetwohealth-monitoringmethods,oneasappliestothehumanbodyandtheothertocivilstructures,shouldbeanalyzedandcompared.Inthispaper,thebasicconceptsandtheoriesofthetwomonitoringmethodsarefirstdiscussed.Similaritiesarethensummarizedandcommentedupon.Itishopedthatthiscorrelationanalysismayhelpprovidestructuralengineerswithsomeinsightsintotheintrinsicconceptofusingpulsediagnosisinhumanhealthmonitoring,whichmaybeofsomebenefitinthedevelopmentofmodernstructuralhealthmonitoringmethods.

简介：活跃多重调节集体水坝pers(叫作AMTMD)，它与相同僵硬和抑制系数由几活跃调节集体水坝pers(ATMD)组成但是变化质量和控制力量，最近被建议了在地面加速下面压制结构的不受欢迎的摆动。AMTMD能显著地改进多重调节集体水坝pers(MTMD)的表演并且在比单个ATMD减少结构摆动也是更有效的，这被显示出。尽管有这，AMTMD的好性能(包括从频率域分析说明的singleATMD)不能必然在时间域翻译成好地震减小行为。调查这些现象，AMTMD与三ATMD控制的一个三故事的钢结构模型在SIMULINK被实现并且使遭到了到几历史的地震。同样，在考虑下面的结构被假定有僵硬的不确定性，例如±15%它的起始的僵硬，在数字模拟。AMTMD的最佳设计参数被与AMTMD实现一般结构的最大的动态放大倍数(DMF)的最小的值的最小化在频率域获得。为比较目的，一样的反应分析组织与作为壁炉，ATMD也被执行。当与一个单身者相比为结构的ATMD使遭到了到历史的地震时，数值分析和比较证明AMTMD通常显示更好的有效性。特别地，AMTMD能与±1的僵硬的不确定性为结构改进单个ATMD的有效性5%它的起始的僵硬。

简介：ＴｈｅＲｉｇｉｄｂｏｄｙｏｆＰａｌｅｏ－ｃｏｎｔｉｎｅｎｔｉｎｔｈｅｃｒｕｓｔｏｆＴａｉｗａｎａｎｄｔｈｅｒｅｃｅｎｔｐｌａｔｅｍｏｖｅｍｅｎｔＧａｎｇ－ＸｉａＬＩＵ（刘光夏），Ｗｅｎ－ＪｕｎＺＨＡＯ（赵文俊）Ｗｅｎ－ＪｕＲＥＮ（任文菊）ａｎｄＸｉｕ...

简介：Tunedmassdampers(TMD)arewellknownasoneofthemostwidelyadopteddevicesinvibrationcontrolpassivestrategies.Inthepastfewdecades,manymethodshavebeendevelopedtofindtheoptimalparametersofaTMDinstalledonastructureandsubjectedtoarandombaseexcitationprocess,butmostofthemareusuallybasedonanimplicitassumptionthatallofthestructuralparametersaredeterministic.However,inmanyrealcasesthissimplificationisunacceptable,sorobustoptimaldesigncriteriabecomesaviablealternativetobettersupportengineersinthedesignprocess.InRobustDesignOptimization(RDO)approaches,indeedthesolutionmustbeabletonotonlyminimizetheperformancebutalsotolimititsvariationinducedbyuncertainty.MostofthecurrentlyavailableRDOmethodsarebasedonaprobabilisticdescriptionofthemodeluncertainty,evenifinmanycasestheyarenotabletoexplicitlyincludetheinfluenceofallthepossiblesourcesofuncertainties.Therefore,inthisstudy,afuzzyversionoftherobustTMDdesignoptimizationproblemisproposed.Theconsistencyofthefuzzyapproachisstudiedwithrespecttotheavailablenon-probabilisticformulationsreportedintheliteratureandanapplicationtoanexampleofarobustdesignofalinearTMDsubjectedtobaserandomvibrationsinthepresenceoffuzzyuncertainties.Theresultsshowthattheproposedfuzzy-basedapproachisabletogiveasetofoptimalsolutionsbothintermsofstructuralefficiencyandsensitivitytomechanicalandenvironmentaluncertainties.

简介：Lossassessmentanddecision-makingareessentialforearthquakeemergencyrescues,andforscientificpredictionofseismicdamageanddeterminationofrescueobjectives.Inpractice,however,thereexistsomeproblems,suchasbasicdatanotbeingpreciseandrichenoughanddecisionmakingnothavingsystematicandcompletecriteria.Thispapertriestosolvetheseproblemsusingthemethodofdataindexationbyconstructinganindexsystemforearthquakeemergencylossassessmentanddecision-making.

简介：ＢｏｄｙｗａｖｅｆｏｒｍｉｎｖｅｒｓｉｏｎｆｏｒｔｈｅｓｏｕｒｃｅｐｒｏｃｅｓｏｆｔｈｅＦｅｂｒｕａｒｙ３，１９９６Ｌｉｊｉａｎｇ，ＹｕｎｎａｎｅａｒｔｈｑｕａｋｅＹＡＮＧＸＵ１）（徐扬）ＭＡＳＡＹＵＫＩＫＩＫＵＣＨＩ２）（菊地正幸）ＹＯＵ－ＪＩＮ...

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简介：在这篇论文，有一个横向的开的裂缝的像横梁的结构的动态模拟使遭到了到一个随机的动人的集体振荡器被调查。一个裂缝和一个随机的振荡器的同时的效果没被探讨直到现在。在在不同地点并且与不同深度的横梁的裂缝被看作一个组损坏，各作为单个瑕疵。另外，忍受不动在横梁被看作问题的另一种类型。质量，僵硬，抑制并且振荡器的速度被假定是随机的参数。一种改进不安技术被使用减少模拟时间。有每个不明确的参数，不安方法的最大的可靠性能在被完成的变化的最大的价值，这被发现，并且这最大的价值能被Alpha-HilberMonte-Carlo模拟方法获得。模拟结果表明团和速度不确定性在横梁的偏转引起高不确定性。另外，偏转的模式没被不同随机的振荡器参数影响，并且作为结果，损坏的类型能甚至与高不确定性被识别。而且，在节点在附近的偏转横梁中间跨度关于瑕疵提供最好的信息，并且因而在一个实际实验导致最好的传感器地点。

简介：瓷电的设备(小便)例如当前的变压器，是批评的在过去的地震期间驱动供应系统，而是它的地震表演一直不是令人满意的。这份报纸学习小便的二种典型类型的地震表演并且基于多重调节集体dampers(MTMD)为小便建议一个抑制方法。抑制包含三个集体单位的设备的MTMD，把一个三元组称为调节质量更潮湿(TTMD)，被设计并且生产。通过饮料桌子测试和有限元素分析，PEE的动态特征被学习，抑制方法的MTMD的有效性被验证。到抑制效率的MTMD冗余的质量的不利影响被学习，相关方程被导出。MTMD坚韧性通过调整TTMD控制频率被验证。当山峰地面加速远超过设计价值时，TTMD的抑制有效性被学习。两饮料桌子测试和有限元素分析显示MTMD在attenuating小便有效、柔韧地震回答。当PGA远超过设计价值时并且当控制偏差被考虑时，TTMD仍然保持有效。

简介：AnewequivalentcenterofmassmodelofFPBs(frictionpendulumbearings)isintroduced,andbasedonthismodel,coefficientjoftheequivalentcenterofmassseparatingfromtheslidingsurfaceisdefined.ItisthoughtintheorythatjhasasignificantimpactontheisolationparameterofFPBs,sincetheequivalentpost-yieldingstiffnessandfrictioncoefficientsarenotsimplydeterminedbyslidingradiusandslidingfrictionpairs.TheresultsofnumericalsimulationanalysisusingABAQUSconductedontwogroupsofFPBssupportthisviewpoint.ForFPBswiththesameslidingradiusandslidingfrictionpairs,theFPBmodulesofstructuralanalysissoftwaresuchasETABScouldonlydistinguishtheequivalenttransformationusingjonebyone.TheseismicresponsedataobtainedinabaseisolationcalculationexampleofFPBsareverydifferent,whichrevealsthatj’simpactontheisolationeffectivenessofFPBscannotbeignored.TheintroductionofjwillhelpimprovetheclassicalstructuraltheoryofFPBsandtheweakpointsofstructuralanalysissoftwarebasedonthistheory,whichisimportantinachievingmoreaccurateanalysesinstructuraldesign.

简介：Oneofthemainconcernsinusingcommercialsoftwareforfiniteelementanalysesofdam-foundation-reservoirsystemsisthatthesimplifyingassumptionsofthemasslessfoundationareunreliable.Inthisstudy,anappropriatedirectfiniteelementmethodisintroducedforsimulatingthemass,radiationdampingandwavepropagationeffectinfoundationsofdamfoundation-reservoirsystemsusingcommercialsoftwareABAQUS.Thefree-fieldboundaryconditionisusedformodelingthesemi-infinitefoundationandradiationdamping,whichisnotabuilt-inboundaryconditioninmostoftheavailablecommercialsoftwareforfiniteelementanalysisofstructuressuchasANSYSorABAQUSandthusneedstobeimplementeddifferently.Thedifferentmechanismformodelingofthefoundation,earthquakeinputandfar-fieldboundaryconditionisdescribed.Implementationofthefree-fieldboundaryconditioninfiniteelementsoftwareisverifiedbycomparingitwithanalyticalresults.Toinvestigationthefeasibilityoftheproposedmethodindam-foundation-reservoirsystemanalysis,aseriesofanalysesisaccomplishedinavarietyofcasesandtheobtainedresultsarecomparedwiththesubstructuremethodbyusingtheEAGD-84program.Finally,themassedandmasslessfoundationresultsarecomparedanditisconcludedthatthemasslessfoundationapproachleadstotheoverestimationofthedisplacementsandstresseswithinthedambody.

简介：Thispaperprovidesanoverviewoftheideasandmethodsoftheassessmentofseismicintensitybasedonremotesensinganddescribesthemodelsusedtoassesstheremotesensingbasedsyntheticseismicdamageindexandseismicintensity.Withthedataofdamageinformationextractedfromthehigh-resolutionaerialimagesintheearthquake-strickenareas(Jiegutown,Yushucity,Qinghai)ofthe2010MS7.1Yushuearthquake,andthedataobtainedthroughpost-earthquakefieldinvestigation,theseismicdamagedegreeandseismicintensityhavebeenestimated.TheanalysisoftheresultsshowsthattheseismicintensityinYushucityisestimatedasIXthroughtheRSassessmentmethod,whichisconsistentwiththeresultestimatedaccordingtothegroundsurveys.TheresultsarediscussedinthelastpartofthepaperandindicatethattheRStechniquesareexpectedtobeoneofthemainmethodsusedtoestimatetheseismicintensityvaluesintheemergencystage.

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简介：在这研究，一个新lumped-mass-stick模型(LMSM)基于象特征值和特徵向量那样的结构的形式的特征被开发。简化模型，把频率称为适应lumped-massstick模型，hasonly棍子元素和节点到的一个小数字提供结构的一样的自然频率并且被用于一座原子抑制大楼。调查LMSM的数字表演，时间历史分析在LMSM和有限元素模型上被执行(女性)为一座原子抑制大楼。结果的比较证明LMSM的动态回答与FEM的那些以排水量和加速几乎相同。另外，结果也以在某些举起的floor反应系列在好同意。

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简介：Largeamplitudevibrationofmastarmstructuresduetowindloadsaretheprimarycontributingfactortothereducedfatiguelifeofsignalsupportstructures.Toalleviatethisproblemofwind-inducedin-planevibrationofmastarmsignalstructures,aparticle-thrustdampingbasedturnedmassdamper(PTD-TMD)deviceisadoptedanditsdampingeffectischaracterizedexperimentally.Theparticle-thrustdampingisapassivedampingdevicethatdoesnotrequireelectricpowerandistemperatureindependent.Basedonthecalibrationtest,anequivalentdynamicmodelofthePTD-TMDdeviceisdevelopedandusedfornumericalsimulationstudy.ThedampingeffectsofthisPTD-TMDdeviceonsignalsupportstructureswasinvestigatedthroughbothnumericalanalysisandlaboratorytestingofa50-ft(15.24m)mastarmstructureincludingbothfreevibrationandforcedvibrationtests.TheexperimentaltestandnumericalstudyresultsshowthatvibrationresponsebehaviorofmastarmsignalsupportstructurescanbesignificantlyreducedbyinstallingthePTD-TMDthatcanincreasethecriticaldampingratioofthemastarmsignalstructuresto4%.Thestressrangeattheweldedconnectionbetweenthemastarmandtrafficpoleisalsoreduced.

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简介：使用一个多级式的摆钟团的可能性更潮湿(MSPMD)部分地理论上被学习在建设期间控制一座留下来电缆线的桥的一个单个列塔的导致风的颤动我这个工作。在这篇论文，为减少桥塔颤动的MSPMD的表演试验性地被学习。一个MSPMD模型和有几何学可伸缩1:100的桥的一个塔模型被设计并且生产。有不同电线长度的MSPMD模型的刻度被进行验证分析模型更潮湿。为不受管束的独立的塔，有电报的塔，和与MSPMD模型一起的塔的一系列测试然后在泛音和白噪音刺激下面被执行。试验性的结果证明塔模型的回答显著地与MSPMD模型的安装减少，它表明MSPMD的有效性减轻桥塔的颤动。

简介：在这研究，充分的理由运动记录(SGMR)选择基于希腊语字母的第七字()作为一光谱形状指示物是适用于钢braced框架结构被调查了。为目标Epsilon的定义的概率的地震危险崩溃分析()并且目标希腊语字母的第七字()在不同危险层次的价值被介绍，适当地考虑选择了SGMR。脆弱曲线为相应于在计划有重要不规则的典型的钢braced框架的三个代表性的模型的不同限制状态被开发，借助于一个加权的损坏索引。结果显示出那光谱形状指示物在预言的中部的结构的能力上有重要效果，并且另外参数比与适当价值寻找记录是损坏的一个更柔韧的预言者。

简介：Anew3Dvelocitymodelofthecrustanduppermantleinthesoutheastern(SE)marginoftheTibetanplateauwasobtainedbyjointinversionofbody-andsurface-wavedata.Forthebody-wavedata,weused7190eventsrecordedby102stationsintheSEmarginoftheTibetanplateau.Thesurface-wavedataconsistofRayleighwavephasevelocitydispersioncurvesobtainedfromambientnoisecross-correlationanalysisrecordedbyadensearrayintheSEmarginoftheTibetanplateau.ThejointinversionclearlyimprovesthevSmodelbecauseitisconstrainedbybothdatatypes.Theresultsshowthatataround10kmdepththerearetwolow-velocityanomaliesembeddedwithinthreehigh-velocitybodiesalongtheLongmenshanfaultsystem.Thesehigh-velocitybodiescorrespondwellwiththePrecambrianmassifs,andthetwolocatedtothenortheastof2013MS7.0Lushanearthquakeareassociatedwithhighfaultslipareasduringthe2008Wenchuanearthquake.Theaftershockgapbetween2013Lushanearthquakeand2008Wenchuanearthquakeisassociatedwithlow-velocityanomalies,whichalsoactsasabarrierzoneforrupturesoftwoearthquakes.Generallylargeearthquakes(M≥5)intheregionoccurringfrom2008to2015arelocatedaroundthehigh-velocityzones,indicatingthattheymayactasasperitiesfortheselargeearthquakes.Jointinversionresultsalsoclearlyshowthatthereexistlow-velocityorweakzonesinthemid-lowercrust,whicharenotevenlydistributedbeneaththeSEmarginofTibetanplateau.