结构静力与动力分析(英文版)

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1、Three-DimensionalStaticandDynamicAnalysisofStructuresAPhysicalApproachWithEmphasisonEarthquakeEngineeringEdwardL.WilsonProfessorEmeritusofStructuralEngineeringUniversityofCaliforniaatBerkeleyComputersandStructures,Inc.ThirdEditionReprintJanuary2002Berkeley,C

2、alifornia,USACopyrightbyComputersandStructures,Inc.Nopartofthispublicationmaybereproducedordistributedinanyformorbyanymeans,withoutthepriorwrittenpermissionofComputersandStructures,Inc.Copiesofthispublicationmaybeobtainedfrom:ComputersandStructures,Inc.1995

3、UniversityAvenueBerkeley,California94704USAPhone:(510)845-2177FAX:(510)845-4096e-mail:info@csiberkeley.comCopyrightComputersandStructures,Inc.,1996-2001TheCSILogoisatrademarkofComputersandStructures,Inc.SAP90,SAP2000,SAFE,FLOORandETABSaretrademarksofCompute

4、rsandStructures,Inc.ISBN0-923907-00-9STRUCTURALENGINEERINGISTHEARTOFUSINGMATERIALSThatHavePropertiesWhichCanOnlyBeEstimatedTOBUILDREALSTRUCTURESThatCanOnlyBeApproximatelyAnalyzedTOWITHSTANDFORCESThatAreNotAccuratelyKnownSOTHATOURRESPONSIBILITYWITHRESPECTTOPU

5、BLICSAFETYISSATISFIED.AdaptedFromAnUnknownAuthorPrefaceToThirdEditionThiseditionofthebookcontainscorrectionsandadditionstotheJuly1998edition.MostofthenewmaterialthathasbeenaddedisinresponsetoquestionsandcommentsfromtheusersofSAP2000,ETABSandSAFE.Chapter22has

6、beenwrittenonthedirectuseofabsoluteearthquakedisplacementloadingactingatthebaseofthestructure.Severalnewtypesofnumericalerrorsforabsolutedisplacementloadinghavebeenidentified.First,thefundamentalnatureofdisplacementloadingissignificantlydifferentfromthebasea

7、ccelerationloadingtraditionallyusedinearthquakeengineering.Second,asmallerintegrationtimestepisrequiredtodefinetheearthquakedisplacementandtosolvethedynamicequilibriumequations.Third,alargenumberofmodesarerequiredforabsolutedisplacementloadingtoobtainthesame

8、accuracyasproducedwhenbaseaccelerationisusedastheloading.Fourth,the90percentmassparticipationrule,intendedtoassureaccuracyoftheanalysis,doesnotapplyforabsolutedisplacementloading.Finally,theeffe