大跨度楼盖不满足振动舒适度要求时的加固方法-何益斌

36420148EarthquakeＲesistantEngineeringandＲetrofittingVol.36No.4Aug．2014EarthquakeＲesistantEngineeringandＲetrofittingAug．20141002-8412201404-0106-05DOI10.3969/j．issn．1002－8412.2014.04.017何益斌，伍天甲，沈蒲生，谭浩智410082、、、。。。。16.433。TU375.2AＲetrofittingMethodofLargeSpanFloorUnsatisfiedVibrationServicebilityHeYi-binWuTian-jiaShenPu-shengTanHao-zhiCollegeofCivilEngineeringHunanUniversityChangsha410082ChinaAbstractThestructureswithlargespanfloorssuchasgymnasiumalwayshavesomecharacterslikelargespansmallstiffnesslargeflexibilityandsmalldamping．Theresonancewillbehappenedwhentherearesomerhythmicactivitiesonit．Itwouldtriggerthediscomfortcausedbylongitudinalvibration．Inthispaperthefloorsystemcharactersareobtainedusingtheoreticalcalculationmethodsoffloorsystemvibration．Thevibrationsourcesisderivedfromtherhythmicactivitiesofaerobicexercise．Floorsystem＇snaturalfrequencyandaccelerationlimitationareconsideredtocontrolthecomfortleveloffloorvibrationoccurredbyrhythmicactivities．BesidesthreeplansaremadetoreinforcetheunsatisfiedengineeringcasementionedintheSection6.4oftheＲeference1．Theresultsofthreeplansarecomparedanddiscussionsarecarriedouttofindtheinfluenceofverticalvibrationaccelerationontheservicebility．Keywordsservicebilityfloorvibrationrhythmicac[e-mail]2014-02-28“”2012BAK15B021－1。、。2。3。20004。《》GB50010-20105《》JGJ3-20106。。、、、。364·107·EarthquakeＲesistantEngineeringandＲetrofittingVol.36No.4201417－9。16.4。。33。2126m1～55.2m。X66×6.0mY33×10.8m。1。400×161.2m。6mHH600H600×200×11×1710.8mHH700700×300×13×24HH200H198×99×4.5×7Q235B。+C302。1Fig．1Plansketchofthestructure1。。。2.1评价标准102－Fig．2Sketchofsteel-concretecompositeslab。11。1Table1LimitationsofslabstructurescomfortlevelofrhythmicactivitiesHzapmg、、、60.050.022.2荷载模型wp1112。0.7kNwp213。2wpTable2EquivalentweightofpeopleperunitareawpkN/m20.61.50.20.12、31112。Pt13Pt=wp∑αi·cos2πf－it+φi1wpαiif－iiφi·108·20148EarthquakeＲesistantEngineeringandＲetrofittingAug．20143Table3Loadfrequencyandkineticfactorofrhythmicactivitiesif－iαif－iαif－iαi11.5～3.00.51.5～3.00.250.42.0～2.751.52－－3.0～5.00.050.154.0～5.50.63－－－－6.0～8.250.1。i。2.3舒适度设计方法1。1f1=18Δj+Δg+Δ槡c2f1ΔjmmΔgmmΔcmm。2ISO198911armq=1T∫T0a4td[]t1/43armqT。at=∑3i=1api·cos2πfit－4apm14armq=1．5∑3i=1a1．5p槡i5apmapii。2.4楼盖舒适度分析［1］0。1kN/m2。0.2kN/m26%。1f1=18Δj+Δg+Δ槡c=5．95Hz。2apm=1．5a1．5p1+a1．5p2+a1．5槡p3=0．194g。。36Hz。。3.1分析工况331、155mm。2450×303HH400H400×200×8×131。3155mm450×30HH400×200×8×13。3.2楼盖舒适度计算结果分析1、2、34。364·109·EarthquakeＲesistantEngineeringandＲetrofittingVol.36No.420143Fig．3Thelocationofaddedplatestothemainbeam41、2、3Table4Themaximumaccelerationresponseofcase12and3gap1ap2ap3apmg0.02700.18500.01350.194210.02330.17440.01110.181920.00950.02240.03200.046430.00890.02190.03850.05134。1。2。3。32。。33。。1、2、35。5Table5ＲesultanalysisoftheslabcomfortlevelcalculationsHzapmg5.950.194215.880.180528.760.046438.410.051351。2。。3。322。31、32。32。。·110·20148EarthquakeＲesistantEngineeringandＲetrofittingAug．2014、。431。2。。3。4。Ｒeferences1．M．2012LouYuHuangJianLvZuo-chao．FloorSystemVibrationServiceabilityDesignM．BeijingSciencePress2012inChinese2．J．2009256144～149ZheXiong-xiongChenXie．AＲeviewofVibrationServiceabilityforLong-SpanFloorsJ．StructuralEngineers2009256144～149inChinese3．D．2005QianXiao-bin．AccelerationＲesponseSpectrumMethodofStructureunderPedestrianExcitationandtheAnalysisofCrowdExcitationD．HangzhouZhejiangUniversity2005inChinese4Australia＇sGrandStadiumJ．JournaloftheAustralianSteelInstitution1999334ISBN0049.22055GB50010-2010SGB50010-2010ConcreteStructureDesignCodeSinChinese6JGJ3-2010SJGJ3-2010TechnicalSpecificationforConcreteStructuresofTallBuildingSinChinese7LeonhardtDＲ．HumanToleranceLevelsforBridgeVibrationsＲ．ＲＲLＲeport19668HuangMing-huiandThambiratnamDPPereraNJ．DynamicPerformanceofSlenderSuspensionFootbridgesUnderEccentricWalkingDynamicLoadsJ．JournalofSoundandVibration20073031-2239～2549．J．20112835～8HuangJianLvZuo-chaoLouYu．ServiceabilityDesignofFloorStructureVibrationfromＲhythmicActivitiesJ．SpecialStructures20112835～8inChinese10．J．20112831～48LouYuLvZuo-chaoHuangJian．CriterionsofFloorVibrationServiceabilityControlJ．SpecialStructure20112831～48inChinese11AISC/CISCSteelDesignGuideSeriesNo．11FloorVibrationsDuetoHumanActivityS．AmericanInstituteofSteelConstructionIncUSA199712ATCGuideonFloorVibrationS．AppliedTechnologyCouncil199913AllenDEＲainerJHandPernicaG．VibrationCriteriaforAssemblyOccupanciesJ．CanadianJournalofCivilEngineering1985123617～62314AllenDEFloorVibrationsfromAerobicsJ．CanadianJournalofCivilEngineering1990175771～7791965～