高层建筑的隔震原理与技术-曲哲

[]100228412(2009)0520058206,,(,100084)[],,,,,,,,,,[];;;;[]TU35211[]ATheoryandTechniquesofSeismicIsolationinHigh2riseBuildingsQuZhe,YeLie2ping,PanPeng(Dept.CivilEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Seismicisolationhasbeenappliedtomoreandmorehigh2risebuildingsintherecentyears.Itsbenefitofmitigatingtheseismicresponsebyincreasingthestructurepsperiodis,however,notassignificantasinlow2risebuildings.Ontheotherhand,theanalysisresultsshowthattheseismicisolationisquiteeffectiveinreducingtheabsoluteaccelerationresponseevenforhigh2risebuildings.Basedonbothlinear2elasticdynamicandresponsespectrumanalyses,twointerpretationsofbaseisolationbuildingstructures,theperiodelongationandthegroundmotionfiltration,arediscussedandcompared.Thesetwointerpretationsareprovedequivalentforcurrentforce2basedseismicdesignprocedures,whilethelatterismuchmorereasonableinexplainingthereductioneffectofabsoluteaccelerationandhencebetterillustratestheadvantagesofseismicisolationinaccordancewithphilosophyoftheperformance2basedearthquakeengineering.Sometechnicalproblemsforhigh2risebaseisolationbuildingarealsodiscussed.Andsomeapplicationsofhigh2risebaseisolationbuildingsinJapanarealsointroduced.Keywords:seismicisolation;high2risebuilding;filtrationtheory;responsespectrum;performancebaseddesign[]2009201219[](IRT0736)1,,,[1],30,,,1995150,,,,,[1]1993,500[34],,(23),,,,,315200910EarthquakeResistantEngineeringandRetrofittingVol131,No15Oct.2009EarthquakeResistantEngineeringandRetrofittingOctober2009,[57],[8],,,,,,,,,,,,,,1Fig11Accelerationspectraoftheoriginalgroundmotionrecordandtherecordfilteredbytheisolationlayer(PEER)OpenSEES,,1994NorthridgeNHollywood,PGA=271gal,PGV=2212cmPs,PGD=11169cm2,,,,,,,5%10,7912kg,1912NPmm,313NPmm,T1=217s,T1=410s,,,,,,,,1(a)Northridge,,97gal81gal,69214kN57413kN,,,315,:59EarthquakeResistantEngineeringandRetrofittingVol131,No152009,,,,,,,1(b),,,,,,,;,10,3,9710%,,,4,9919%;,,3,9710%2,:(1)2(a),,,,(2)2(a),,()(),(),(),(2(b)),(3)2(c)(Fi=miai,mii,aii),,,,2(c),,,;,(4)2(d),,,,;,2(c)2(d),,,,(5)2(e),,,,,,,,,,[9],,,,,60200910EarthquakeResistantEngineeringandRetrofittingOctober20092NorthridgeFig12StructuralresponsetothegroundmotionofNorthridgerecordbeforeandafterisolated,,315,:61EarthquakeResistantEngineeringandRetrofittingVol131,No152009,,,,,,,,:(1),,;(2),,,;(3),,,,,(),,,,3,,,,,,,:(1),,,,,(2),,,(3),,,,,;,,;,,,,,,,,1P340m,60m,,1995,110,210;1995,40%210,10%3105103199520003Fig13Aspectratiosofisolatedbuildingstructures,2001324,42124m5(7):(1)62200910EarthquakeResistantEngineeringandRetrofittingOctober200934,;(2);(3);(4)2001120049,64105m014103cmPs2,(PGA10cmPs2),210,315410(PGA40cmPs2),,1102003926M8,40s,26614kg4(7)6412m,,,310410s,50%310s,,,4,:(1),,,;,,,(2),(3),,,,,,,,,:,,(References):[1]FarzadNaeim,JamesMKelly.DesignofSeismicIsolatedStructures2FromTheorytoPractice[M].JohnWiley&Sons,Inc,1999[2]PanP,ZamfirescuDandNakashimaM,etal.Base2IsolationdesignpracticeinJapan:Introductiontothepost2Kobeapproach[J].JournalofEarthquakeEngineering,2005,9(1):147171[3].[J].,2000,97:2425ZhuQin.Constructionofseismicisolationbearingsinbuildingstructures[J].ZhejiangConstruction,2000,97:2425(inChinese)[4],.[J].,2003,20(1):6264MengMei2li,ZhangDe2qiang.Studiesonexistingandprospectofshockabsorptionandshockpartitionofourcountry[J].JournalofHeberInstituteofArchitecturalScienceandTechnology,2003,20(1):6264(inChinese)[5],,,.[J].,2003,36(5):6470LiuWen2guang,YanWei2ming,HuoDa,etal.ComputationModelandShakingTableTestforIsolatedMDOFTowerStructure[J].ChinaCivilEngineeringJournal,2003,36(5):6470(inChinese)[6].[J].,2004,30(14):4243XieBiao.Theapplicationofvibrationisolationtechniqueinhigh2risebuilding[J].ShanxiArchitecture,2004,30(14):4243(inChinese)(51)315,:63EarthquakeResistantEngineeringandRetrofittingVol131,No152009,,TMD,2,,,,6,,,,,(References):[1]AlanKlenbczyk,BrianBreukelman.StructuralControlofHighRiseBuildingUsingaTunedMassWithIntegralHermeticallySealed,FrictionlessHydraulicDampers[OL].http:PP[2]TaylorDP.TheApplicationofEnergyDissipationDampingDevicestoanEngineeredStructureorMechanism[OL].http:PP[3]TaylorDP.DamperRetrofitofTheLondonMillenniumFootbridgeaCaseStudyinBiodynamicDesign[OL].http:PP[4]SampleTechnicalSpecificationsforHermeticallySealed,FrictionlessFluidViscousDampingDevices[OL].TaylorDevices[5].[J].,2008(9)ChenYong2qi.ConstructionandVelocityExponentsofFluidViscousDamperforStructuralEngineering[J].SteelConstruction,2008,9(inChinese)[6],.[J].,2008(6)MaLiang2zhe,ChenYong2qi.ResearchandInvestigationonDynamicPerformanceandTestingRequirementsofLiquidViscousDampers[J].BuildingStructure,2008(5)(inChinese)[](1973),,,,[]272212201(100037)(63)[7],.[J].,2004,20(4):1921JinGuang2hui,ZhangLin2yun.Baseisolationdesignforhigh2risebuildings[J].BuildingScience,2004,20(4):1921(inChinese)[8].[D].:,2003LiuWen2guang.Mechanicspropertiesofrubberbearingsandearthquakeresponseanalysisofisolatedstructure[D].Beijing:BeijingUniversityofTechnology,2003(in