土木工程毕设外文文献中英文翻译

Vol.13,No.2EARTHQUAKEENGINEERINGANDENGINEERINGVIBRATIONJune,2014EarthqEng&EngVib(2014)13:257-267DOI:10.1007/s11803-014-0228-yShakingtableexperimentalstudyofrecycledconcreteframe-shearwallstructuresZhangJianwei1†,CaoWanlin1†,MengShaobin1§,YuCheng2‡andDongHongying1‡1.CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100124,China2.DepartmentofEngineeringTechnology,UniversityofNorthTexas,Denton,TX76207,USAAbstract:Inthisstudy,four1/5scaledshakingtabletestswereconductedtoinvestigatetheseismicperformanceofrecycledconcreteframe-shearwallstructureswithdifferentrecycledaggregatesreplacementratesandconcealedbracingdetail.Thefourtestedstructuresincludedonenormalconcretemodel,onerecycledcoarseaggregateconcretemodel,andtworecycledcoarseandfineaggregateconcretemodelswithorwithoutconcealedbracingsinsidetheshearwalls.Thedynamiccharacteristics,dynamicresponseandfailuremodeofeachmodelwerecomparedandanalyzed.Finiteelementmodelswerealsodevelopedandnonlineartime-historyresponseanalysiswasconducted.Thetestandanalysisresultsshowthattheseismicperformanceoftherecycledcoarseaggregateconcreteframe-shearwallstructureisslightlyworsethanthenormalconcretestructure.Theseismicresistancecapacityoftherecycledconcreteframe-shearwallstructurecanbegreatlyimprovedbysettingupconcealedbracingsinsidethewalls.Withappropriatedesign,therecycledcoarseaggregateconcreteframe-shearwallstructureandrecycledconcretestructurewithconcealedbracingsinsidethewallscanbeappliedinbuildings.Keywords:recycledconcrete;frame-shearwall;concealedbracings;shakingtabletest;nonlineartime-historyresponseanalysisCorrespondenceto:CaoWanlin,CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100124,ChinaTel:[phone];Fax:[phone]E-mail:[e-mail]†Professor;§MasterStudent;‡AssociateProfessorSupportedby:NationalScienceandTechnologySupportProgramofChinaunderGrantNo.2011BAJ08B02;NaturalScienceFoundationofBeijingunderGrantNo.8132016;BeijingCityUniversityYouthBackboneTalentTrainingProjectunderGrantNo.PHR201108009ReceivedJanuary10,2013;AcceptedNovember1,20131IntroductionInrecentyears,theChinesebuildingindustryhasbeeninahighspeeddevelopmentperiod.Thedemandofconcreteresultsintheuseofanextremelylargeamountofaggregates,andtheexcessiveexploitationofnaturalsandandstoneyieldedseriousdamagetotheenvironment.Meanwhile,significantvolumesofconstructionwasteweregeneratedbydemolition,renovation,andcollapseofoldbuildings.Itwasestimatedthatapproximately200milliontonsofwasteconcreteiscurrentlyproducedannuallyinmainlandChina(Xiaoetal.,2012).Makingefficientuseofthiswasteconcretefromconstructionhasbecomeanurgenttaskforsustainability.Oneeffectivewaytodealwithwasteconcreteistouseitasaggregatetoproducerecycledconcrete(Tam,2009).Recycledconcreteusesaggregatesmadefromwasteconcretewhichhasbeenbroken,classifiedandwashedtopartlyorentirelyreplacenaturalaggregates,perChineseTechnicalCodeJGJ/T240-2011(2011).Currently,theexperimentalstudiesonrecycledconcretemainlyfocusonitsmaterialproperties(Xiaoetal.,2005;XiaoandFalkner,2007;TabshandAbdelfatah,2007;Casuccioetal.,2008;Belénetal.,2011).Thestudiesonbasicmechanicalpropertiesandseismicperformanceofrecycledconcretestructuralmembershavemadesomeprogresses,suchastheflexuralbehaviorandshearcapacityofbeams(XiaoandLan,2006;AjdukiewiczandKliszczewicz,2007;Satoetal.,2007;Fathifazletal.,2011),compressionbehaviorandseismicperformanceofcolumns(Xiaoetal.,2006;AjdukiewiczandKliszczewicz,2007;Baietal.,2011),seismicbehaviorofbeam-columnjoints(XiaoandZhu,2005;Corinaldesietal.,2011),seismicbehaviorofshearwalls(Caoetal.,2010a;Zhangetal.,2010),seismicbehaviorofframes(Sunetal.,2006),andseismicbehaviorofframe-shearwallstructures(Caoetal.,2010b).Howeverthoseexperimentalstudieswerecarriedoutbymeansofstatictests.Thereareonlyafewstudiesonthedynamicperformanceofrecycledconcretestructures.Thispaperpresentstheresultsofanexperimentalinvestigationofthedynamicperformanceofrecycledconcreteframe-shearwallstructurethroughtheuseofshakingtabletests.Fourframe-shearwall258EARTHQUAKEENGINEERINGANDENGINEERINGVIBRATIONVol.13structuresweretested,andtheresearchfocusesontheinfluenceofdifferentrecycledaggregatereplacementratiosandconcealedbracings.2Experimentaldetails2.1Testspecimensandtestset-upFour1/5scaledframe-shearwallmodelswerelabeledasFSW-0,FSW-1,FSW-2,andFSW-3.FSW-0wasmadeofnormalconcrete.FSW-1wasmadeofrecycledcoarseaggregateconcrete.FSW-2andFSW-3weremadeofrecycledcoarseandrecycledfineaggregateconcrete.FSW-3hadreinforcedconcreteconcealedbracingsinsidetheshearwalls(Caoetal.,2003,2009).ThebeamwasdesignedasaT-sectioninordertoconsidertheconcretefloor'scontributiontothebeamstiffness.Thecantileverlengthonbothsideswassixtimesthefloorthickness.Thespecimensallhadthesamedimensionsandreinforcementlayout.FSW-3hadconcealedbracingsinsidetheshearwallsandtheothersdidnot.ThedimensionsandreinforcementlayoutofFSW-3areshowninFig.1.Φ8steelbarwasusedforthelongitudinalreinforcementoftheconcealedcolumnsandconcealedbracingsintheshearwallaswellastheframecolumns.Φ6steelb