简介：隔离轴承和dampers经常在墩和上层建筑之间被安装在大地震下面减少桥的地震回答。这份报纸论述为桥更潮湿的新奇的钢。更潮湿作为精力驱散部件采用钢盘子，并且采用垂直免费机制完成一个大变丑能力。用用称为ABAQUS的一个有限元素节目的控制排水量的周期的装载和数字分析的伪静电干扰测试被进行调查行为更潮湿，并且设计方法论基于测试和数字分析被建议。从这研究获得的主要结论如下：(1)新dampers在大排水量下面有稳定的磁滞现象行为；(2)有限元素分析能模仿行为与令人满意的精确性更潮湿；并且(3)简化了设计方法论更潮湿是有效的。

简介：民用的结构的完全的结构的描述的生存能力被探索并且讨论。特别地，鉴定形式(即自然频率，抑制比率和形式的形状)并且物理性质(即质量和僵硬)用仅仅结构，免费腐烂反应被学习。完成这，从免费颤动反应的形式的分析仅仅(MAFVRO)并且集体修正(公里)方法论与小浪一起订婚为最佳的信号处理和形式的重建基于技术。方法论被评估用模仿并且试验性的数据。模仿的数据从5故事的一个简单有弹性的模型被提取砍造并且从RC的一个更现实主义的非线性的模型装裱结构。试验性的数据从放大的2故事的饮料表格测试被聚集砍造。当识别性质的质量被显示被频率乐队和最佳的形式的形状重建的足够的选择管理，为从数据的重建过程的指南被建议。而且在结构经历了损坏的情况中，建议鉴定计划能也被申请对结构的健康的初步的评价。

简介：DuringthegreatWenchuanearthquake,about460permanentfree-fieldstationsinNationalStrongMotionObservationNetworkSystem(NSMONS)ofChinacapturedthemainshockaccelerationrecords.Theserecordscanbeappliedtositeeffectanalyses,andthenthesiteclassificationofthosepermanentstationscanbecarriedoutfirstly,whichwillservedasthefundamentalinformationforfurtherresearch.Inthispaper,thesiteofnear-faultstationsisclassifiedbyhorizontal-to-verticalspectralratio(HVSR)methodaccordingtothesiteclassdescriptionofJapanearthquakeresistantdesigncodeandresponsespectralshapes(RSS)methodfollowingthesiteclassdescriptionofthe1997UniformBuildingCode(UBC)provisions.Thenbasedonthedetailedboreholedataofthosefree-fieldstations,theequivalentshearwavevelocityandoverburdenthicknessarecalculatedandthesiteclassificationsaregivenbyChinesecodeforseismicdesignofbuildings.Furthermore,forthestationshavingsuccessfulmicrotremortestdata,thesitedominantperiodsarecomputedtoverifytheresultsofsiteclassification.Finally,combinedwithalltheaboveresults,therecommendedsiteclassesofnear-faultpermanentfree-fieldstationsaregiven.

简介：Ｔｈｅｅｆｆｅｃｔｏｆｍａｇｎｅｔｉｃｆｉｅｌｄ－ｆｒｅｅｓｐａｃｅｏｎｔｈｅａｃｏｕｓｔｉｃｂｅｈａｖｉｏｒｏｆｂｕｄｇｅｒｉｇａｒｓ（Ｍｅ－ｌｏｐｓｉｔｔａｃｕｓｕｎｄｕｌａｆｕｓ）ＪＩＮ－ＣＨＡＮＧＪＩＡＮＧ１）（蒋锦昌），ＨＡＩ－ＱＩＡＮＧＪ...

简介：ThemodeserialsoftheEarth'sfreeoscillationprovidesomeimportantinformationontheEarth'sdeepstructureandsuperconductinggravimeters(SG)caninvestigatethephenomenaoftheEarth'sfreeoscillationswithhighaccuracy.ThegreatSumatra-AndamanearthquakefullyexcitedtheEarth'sfreeoscillationsandthesesignalswereperfectlyrecordedbyfivesuperconductinggravimetersintheglobe.Afterthepre-treatmentandspectralanalysisontheSGobservationdata,weobtainedtheexperimentedmodeserialsoftheEarth'sfreeoscillationsconsistingof147modeswithGGPstationdata.TheseobservedmodeswerethemselvessomenewimportantdataforthestudyoftheEarth'sdeepstructure.Onthebasisofthediscussionsonsomecheckedinner-core-sensitivemodes,wedistinguishedthreelayersfromtheinnercore,andtheboundaryoftheupperlayerwascompatiblewiththeformerlyknowntransitionzoneintheinnercorebasedonseismicbodywavesandsupportedthattherewerethehemisphericalvariationandverylowershearvelocityzoneinthelowerinnercore.

简介：Thispaperaddressesthefreetransversevibrationsofthinsimplysupportednonhomogeneousisotropicrectangularplatesofbilinearlyvaryingthicknesswithelasticallyrestrainededgesagainstrotation.TheGram-Schmidtprocesshasbeenusedtogeneratetwo-dimensionalboundarycharacteristicorthogonalpolynomials,whichhavebeenusedintheRayleigh-Ritzmethodtostudytheproblem.Thelowestthreefrequencieshavebeencomputedforvariousvaluesofnonhomogeneousparameters,thicknessparameters,aspectratioandflexibilityparameters.Acomparisonoftheresultswiththoseavailableintheliteraturehasbeenmade.Three-dimensionalmodeshapesforthespecifiedplatehavebeenpresented.