近远场地震动作用密贴交叉组合地铁车站振动台试验_李积栋

4810201510CHINACIVILENGINEEＲINGJOUＲNALVol．48Oct．No．102015513800981110012014-07-0912111111．1001242．101300。。U491A1000-131X201510-0030-08Shakingtabletestoftheclosely-attachedintersectingsubwaystationunderfar-fieldandnear-fieldgroundmotionLiJidong12TaoLianjin1AnJunhai1GuoFei1AnLinxuan1SuoXin'ai11．KeyLaboratoryofUrbanSecurityandDisasterEngineeringoftheMinistryofEducationBeijingUniversityofTechnologyBeijing100124China2．ChinaStateConstructionEngineeringCorporationBeijng101300ChinaAbstractBasedonBeijingGongzhufeninterchangesubwaystationashakingtabletestontheclosely-attachedintersectingsubwaystationwascarriedoutconsideringthefar-fieldandnear-fieldgroundmotion．Theseismicresponsecharacteristicsoftheclosely-attachedintersectingsubwaystationwerestudiedbyanalyzingthedynamicpropertiesofsoilandstationmodelstructure．Theresultsshowthattheseismicresponseofsoillayerisdifferentunderthefar-fieldandnear-fieldgroundmotionwithdifferentfrequencycharacteristics．Whenthepredominantfrequencyofsoillayerisclosetothatofsimulatedgroundmotiontheamplificationeffectonsoillayerismoreremarkable．Duetotheinteractionbetweentheupperandlowersubwaystationsthestrainamplitudeinstationfloorislargerthanthatinstationroofandadditionallythestrainamplitudeatthebottomofthesidewallislargerthanthatatthetopwhichdistinguishitfromthetraditionalsinglesubwaystation．Keywordsshakingtablesubwaysta[e-mail]。1-2。19952．5m3-7。8-14。。DOI:10.15951/j.tmgcxb.2015.10.0054810··31·11．1MTS3．0m×3．0m。2．5m×1．5m×1．1m4mm141。1Fig．1Ｒectanglarsuspensionlaminarshearmodelbox1．21516。Bockinghamπ1。1Table1SimilarityratioofstructuremodelSLSL1/30SuSu=SL1/30SSS2L1/900SρSρ1SESE1/4SσSσ=SE1/4SεSε=Sσ/SE1SaSa1SvSv=SL·Sa0．51/2SωSω=1/St5．477StSt=SL/Sa20．1831．32。ab2Fig．2Subwaystationstructuremodel1．4613m～15m。。1．5、、。、、．3。1．62008·32·2015abc3Fig．3Sensorarrangement、、。EW0．544g1．503kmEW0．167g103kmEW0．134g230．4kmEW0．088g298．6km。80s42。22．112Table2Loadingcasesofdifferentseismicwave/g1B0．052FX0．0883B0．054MS0．1675B0．056QX0．1347B0．058BJ0．54435。3Table3PeakaccelerationatdifferentmeasurementpointsFXMSQXBJA30．0920．0700．0770．411A70．1180．0950．0920．486A110．1190．1040．1110．622A150．1300．1300．1360．740A190．1340．1330．1380．745、．5。4。4PredominantfrequencyofgroundmotionsHzFXMSQXBJ12．7252．6099．22711．74712．4816。10～15Hz4810··33·abcd4Fig．4Accelerationtime-historiesandFourierspectraofbedrockgroundmotionA15、A1925～30HzA1525～·34·20155Fig．5Accelerationamplificationfactoratdifferentmeasurementpoints30Hz。。257。、。5Table5PeakaccelerationofstructuremodelatdifferentmeasurementpointsFXMSQXBJJA10．1270．1140．120．7JA20．1260．1140．1160．697JA30．1120．1040．1120．618JA40．1350．1250．1330．737JA50．120．1080．1140．659JA60．1360．1240．1250．754JA70．1250．1190．1250．676JA80．1080．1020．1040．638aFx-A2bFx-A6cFx-A10dFx-A14eFx-A186Fig．6Fourierspectrumatdifferentmeasurementpoints4810··35·7Fig．7Accelerationamplificationfactorofstructuremodel2．26。mm。6/mmTable6DisplacementsatdifferentmeasurementpointsfordifferentcasesFXMSQXBJD10．080．140．111．96D20．010．040．050．97D300．010．020．777。。7Table7SoilpressureatdifferentmeasurementpointsfordifferentcasesFXMSQXBJP10．1160．1210．1220．492P20．1520．1670．1710．486P30．1840．1950．1980．6022．3。。8Fig．8Strainamplitudeatdifferentmeasurementpointsfordifferentcases·36·20158。—00。31011。2。3。1．-D．2011ZhangJiwen．Effectsofhigh-risebuildingsbuiltondeepsoftsitesunderthelong-distanceearthquakeconsideringsoil-structureinteractionD．HarbinInstituteofEngineeringMechanicsChinaEarthquakeAdministration2011inChinese2．J．201044101955-1961ChenGuoxingZuoXiWangZhihuaetal．ShakingtablemodeltestofsubwaystationstructureunderfarfieldandnearfieldgroundmotionJ．JournalofZhejiangUniversityEngineeringScience201044101955-1961inChinese3UenishiKSakuraiS．Characteristicoftheverticalseismicwavesassociatedwiththe1995Hyogo-NanbuKobeJapanearthquakeestimatedfromthefailureoftheDakaiundergroundstationJ．EarthquakeEngineeringandStructuralDynamics2000296813-8214KircherCA．TheKobeearthquakegroundshakingdamageandlossC//ProceedingsoftheBuildinganInternationalCommunityofStructuralEngineers．ChicagoASCE1996908-9165．J．201332S23627-3635SunHaifengJingLipingWangShuweietal．ExperimentalstudyofseismicfailuremechanismofundergroundstructureJ．ChineseJournalofＲockMechanicsandEngineering201332S23627-3635inChinese6．J．20062781293-1298CheAilanIwatateTakahiroGeXiurun．DynamicbehaviorsofsubwaystructuresubjectedtostrongearthquakemotionsusingshakingtabletestsanddynamicanalysesJ．ＲockandSoilMechanics20062781293-1298inChinese7．J．20072681538-1545YangLindeWangGuoboZhengYonglaietal．Shakingtabletestonmetrostationstructureand3DnumericalsimulationofseismicresponseJ．ChineseJournalofＲockMechanicsandEngineering20072681538-1545inChinese8．J．2014403361-367LiJidongTaoLianjinAnJunhaietal．Seismicresponseanalysisoflargeclosely-attachedintersectingcombinationofsubwaystationJ．JournalofBeijingUniversityofTechnology2014403361-367inChinese9．J．200239142-47ChenWeijunZhuZhonglong．AreviewonthetechnologyusedincloselyoverlappedtunnelsJ．ModernTunnellingTechnology200239142-47inChinese10．J．201310664-