简介：装载的风是为控制大跨度的房顶结构的设计的最重要的负担之一。相等的静态的风负担，能通常瞄准决定特定的回答，被结构的设计者广泛地使用。为对多反应适用的相等的静态的风负担的一个方法在这份报纸被建议。相应于特别山峰回答的一个修改loadresponse-关联(纵向冗余码校验)方法被介绍，并且类似算法实现了因为组反应被描述。算法的主要想法是二回答能被放进一个组如果一回答的价值接近另外的反应的，当结构受到瞄准另外的反应的相等的静态的风负担时。基于修改纵向冗余码校验，组织反应方法被提出到装载的构造等价物静电干扰风。这种技术能同时为一些组织回答复制山峰回答。验证它的计算精确性，方法被用于实际大跨度的房顶结构。计算结果看那在一样的组的回答的类似什么时候高，有高精确性的相等的静态的风负担和相等的静电干扰的合理大小弯屈分发能被完成。

简介：Asimplifiedmultisupportresponsespectrummethodispresented.Thestructuralresponseisasumoftwocomponentsofastructurewithafirstnaturalperiodlessthan2s.Thefirstcomponentisthepseudostaticresponsecausedbytheinconsistentmotionsofthestructuralsupports,andthesecondisthestructuraldynamicresponsetogroundmotionaccelerations.Thismethodisformallyconsistentwiththeclassicalresponsespectrummethod,andtheeffectsofmultisupportexcitationareconsideredforanymodalresponsespectrumormodalsuperposition.Iftheseismicinputsateachsupportarethesame,thesupportdisplacementscausedbythepseudostaticresponsebecomerigidbodydisplacements.Theresponsespectruminthecaseofmultisupportexcitationsthenreducestothatforuniformexcitations.Inotherwords,thismultisupportresponsespectrummethodisamodificationandextensionoftheexistingresponsespectrummethodunderuniformexcitation.Moreover,mostofthecoherencycoefficientsinthisformulationaresimplifiedbyapproximatingthegroundmotionexcitationaswhitenoise.Theresultsindicatethatthissimplificationcanreducethecalculationtimewhilemaintainingaccuracy.Furthermore,theinternalforcesobtainedbythemultisupportresponsespectrummethodarecomparedwiththoseproducedbythetraditionalresponsespectrummethodintwocasestudiesofexistinglong-spanstructures.Becausetheeffectsofinconsistentsupportdisplacementsarenotconsideredinthetraditionalresponsespectrummethod,thevaluesofinternalforcesnearthesupportsareunderestimated.Theseregionsareimportantpotentialfailurepointsanddeservespecialattentionintheseismicdesignofreticulatedstructures.

简介：Twoaspectsofanewmethod,whichcanbeusedforseismiczoning,areintroducedinthispaper.Ontheonehand,theapproachtoestimatebvalueandannualactivityrateproposedbyKijkoandSellevollneedstousetheearthquakecatalogue.Theexistingearthquakecataloguecontainsbothhistoricalandrecentinstrumentaldatasetsanditisinadequatetouseonlyonepart.Combiningthelargenumberofhistoricaleventswithrecentcompleterecordsandtakingthemagnitudeuncertaintyintoaccount,Kijko’smethodgivesthemaximumlikelihoodestimationofbvalueandannualactivityrate,whichmightbemorerealistic.Ontheotherhand,thismethodconsidersthesourcezoneboundaryuncertaintyinseismichazardanalysis,whichmeanstheearthquakeactivityrateacrossaboundaryofasourcezonechangessmoothlyinsteadofabruptlyandavoidstoolargeagradientinthecalculatedresults.

简介：ＴｈｅｂｖａｌｕｅｓｐｅｃｔｒｕｍａｎｄηｖａｌｕｅｂｙｔｈｅｍｏｍｅｎｔｍｅｔｈｏｄＴｏｒｕＯｕｃｈｉ（大内）ＤｅｐａｒｔｍｅｎｔｏｆＥａｒｔｈＳｃｉｅｎｃｅｓ，ＦａｃｕｌｔｙｏｆＳｃｉｅｎｃｅ，ＫｏｂｅＵｎｉｖｅｒｓｉｔｙ，Ｋｏｂｅ，６５７，...

简介：

简介：

简介：Theconceptofstatevectorstemsfromstatisticalphysics,whereitisusuallyusedtodescribetheevolutionofacontinuumfieldinitswayofcoarse-graining.Inthispaper,thestatevectorisemployedtodepicttheevolutionofseismieityquantitatively,andsomeinterestingresultsarepresented.Theauthorsinvestigatedsomefamousearthquakecases(e.g.,theHaiehengearthquake,theTangshanearthquake,thewestKuulunMountainsearthquake,etc.)andfoundthatthestatevectorsevidentlychangepriortotheoccurrenceoflargeearthquakes.Thusitisbelievedthatthestatevectorcanbeusedasakindofprecursortopredictlargeearthquakes.

简介：Inthispaper,thespatiallinearitymethodisappliedtosyntheticalprocessingofprecursorydatafromdifferentstationsanddifferentdisciplines.Thenewcharacteristicvalue(a)obtainedcandescribethewholeprecursoryfield.Theauthorspresenttheformulasforcalculatingspatiallinearity.Furthermore,thespatiallinearitymethodisappliedtoprocessingofgeoelectricalresistivityandgroundwaterleveldatafrom1970to1994inNorthChina.Theresultsshowthatthenewcharacteristicvalue(a)coulddetecttheanomaly1yearbeforemoderatelystrongearthquakes.

简介：Ithasbeenproventhattheimplicitmethodusedtosolvethevibrationequationcanbetransformedintoanexplicitmethod,whichiscalledtheconcomitantexplicitmethod.Theconstantaccelerationmethod'sconcomitantexplicitmethodwasusedasanexampleandisdescribedindetailinthispaper.Therelationshipbetweentheimplicitmethodandexplicitmethodisdefined,whichprovidessomeguidanceabouthowtocreateanewexplicitmethodthathashighprecisionandcomputationalefficiency.

简介：ＡｐｐｌｉｃａｔｉｏｎｏｆＰＰｃｌｕｓｔｅｒｍｅｔｈｏｄｉｎｔｈｅｅａｒｔｈｑｕａｋｅｓｗａｒｍａｎａｌｙｓｉｓＳｈｉ－ＹｏｎｇＺＨＯＵ；（周仕勇）Ｌｉｎｇ－ＲｅｎＺＨＵ；（朱令人）ａｎｄＣｈｕａｎ－ＬｉｎｇＤＥＮＧ（邓传玲）（Ｓｅｉｓｍｏｌｏｇｉｃ...

简介：Afrequencyandspatialdomaindecompositionmethod(FSDD)foroperationalmodalanalysis(OMA)ispresentedinthispaper,whichisanextensionofthecomplexmodeindicatorfunction(CMIF)methodforexperimentalmodalanalysis(EMA).ThetheoreticalbackgroundoftheFSDDmethodisclarified.Singularvaluedecompositionisadoptedtoseparatethesignalspacefromthenoisespace.Finally,anenhancedpowerspectrumdensity(PSD)isproposedtoobtainmoreaccuratemodalparametersbycurvefittinginthefrequencydomain.Moreover,asimulationcaseandanapplicationcaseareusedtovalidatethismethod.

简介：

简介：象严肃那样的垂直负担可以在大楼的地震反应上有重要影响。在这份报纸，连续砍横梁模型被扩大学习地震需求砍有严肃的考虑的大楼在近地的地面运动下面装载效果。免费运动方程的一个分析答案作为严肃砍横梁模型以一个Bessel系列被提供。为计算interstory飘移系列的一个方法被建议。为有不同脉搏的二个近地的记录的interstory飘移系列被介绍说明严肃和抑制比率的效果。interstory飘移系列也习惯于分析光谱近的差错的特征在2008Wenchuan地震期间扎根了运动。严肃负担比率，抑制比率和更高的模式的效果被调查并且讨论。

简介：事件波浪的明显的速度是为与理论方法模仿旋转地面运动的一个重要参数，但是当仅仅有单个record.This时，纸在一块多层的各向同性的橡皮基于elastodynamic理论讨论一个P-SV比率方法，有效地对估计困难在SMARTI的四地震的明显的速度穿的半space.The与这method.The结果被计算接近使用旅行时间analysis.Furthermore的一个方法，因素

简介：ＥｘｐｅｃｔｅｄｍａｇｎｉｔｕｄｅａｎｄｄｉｓｔａｎｃｅｏｆｐｏｔｅｎｔｉａｌｓｏｕｒｃｅａｒｅａａｎｄｔｈｅｅｓｔｉｍａｔｉｎｇｍｅｔｈｏｄＭｅｎｇ－ＴｔａｎＧＡＯ（高孟潭）（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓｉｃｓ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇ...

简介：Theoptimalmatrixmethodandoptimalelementalmethodusedtoupdatefiniteelementmodelsmaynotprovideaccurateresults.Thissituationoccurswhenthetestmodalmodelisincomplete,asisoftenthecaseinpractice.Animprovedoptimalelementalmethodispresentedthatdefinesanewobjectivefunction,andasabyproduct,circumventstheneedformassnormalizedmodalshapes,whicharealsonotreadilyavailableinpractice.Tosolvethegroupofnonlinearequationscreatedbytheimprovedoptimalmethod,theLagrangemultipliermethodandMatlabfunctionfminconareemployed.Todealwithactualcomplexstructures,thefloat-encodinggeneticalgorithm(FGA)isintroducedtoenhancethecapabilityoftheimprovedmethod.Twoexamples,a7-degreeoffreedom(DOF)mass-springsystemanda53-DOFplanarframe,respectively,areupdatedusingtheimprovedmethod.Thcexampleresultsdemonstratetheadvantagesoftheimprovedmethodoverexistingoptimalmethods,andshowthatthegeneticalgorithmisaneffectivewaytoupdatethemodelsusedforactualcomplexstructures.

简介：

简介：在这篇论文，把粗野错误(空铅)的伪精确的察觉与不连续的变丑positive分析相结合的一个新想法，向前被带划分地区性的活跃的块。方法能为与观察数据缺乏的区域改进活跃的块的分界并且提供一列新火车直为活跃的块的地区性的变丑的完全的学习。另外，把四川云南区域用作例子，方法的实践过程简短被介绍。

简介：

简介：ＲｅｓｅａｒｃｈｏｎｎｏｎｌｉｎｅａｒＲ／ＳｍｅｔｈｏｄａｎｄｉｔｓｐｐｌｉｃａｔｉｏｎｉｎｅａｒｔｈｑｕａｋｅｐｒｅｄｉｃｔｉｏｎＢｉ－ＱｕａｎＷＡＮＧ（王碧泉）；Ｈａｎ－ＭｉｎｇＨＵＡＮＧ（黄汉明）；Ｈｏｎｇ－ＳｈｕｎＦＡＮ（范洪顺）；Ｃｈｕｅｎ...