鋼筋混凝土巨型框架結構動力特性及地震反應分析.pdf

1、合肥工業(yè)大學碩士學位論文鋼筋混凝土巨型框架結構動力特性及地震反應分析姓名：鮑永健申請學位級別：碩士專業(yè)：結構工程指導教師：葉獻國20100401StudiesonDynamicCharacteristicsandSeismicResponseofReinforcedConcreteMega—frameStructuresABSTRACTMega—framestructurescombinedwiththemainlevelstructu

2、reandtheseconddarystructureIthasadvantagesasbelow：clearforcetransmission，welldoneintegralperformance，quicklygoingconstruction，lessspendingmaterials，andwidedevelopmentperspectivestohigh—risebuildingorsuperhighrisebuilding

3、Thus，itisvaluableintheoryandpracticallymeaningfultostudythedynamiccharacteristicsandseismicresponseofmega—framestucturesAccordingtofiniteelementtheorythisarticlegetsreinforcedconcretemega—framestructuremodelsusingthelarg

4、escalegeneral—purposestructuralanalysisanddesignsoftwareSAP2000，andfinishingmodalanalysis，responsespectrumanalysis，elastictime—historyanalysisandelasticplastictimehistoryanalysisFirst，modelanalysistowardsmega—framestruct

5、urewascarriedout，andthenitsnaturalvibrationcharacteristicswerecheckedThen，responsespectrumanalysisandelastictimehistoryanalysiswerecarriedouttostudyonthechangesofseismicresponseofmega—framestructuresbythechangesofmajorco

6、lumn’Sstiffnessandmajorbeammembers’stiffnessorlayoutofbracesandenteringdifferentseismicwavesAccordingtotheresultsobtained：theeffectsaredifferentontheseismicbehaviorbyconsideringthechangesofmegacolumn’Sstiffnessandmega—be

7、ammembers’stiffness；themajorbeamcontrolsthehorizontaldisplacementsmoreobviouslywithmorelayersofbraces；themajorbeamcontrolsthehorizontaldisplacementsmoreobviouslyanddriftangleisdistributedmoreevenlywhenthemajorbeambraces’

8、layoutarenearthelowerpartofthestructure；megaframestructureshaveagoodresistancecapacitytomultiearthquakeLast，elastic—plastictimehistoryanalysiswascarriedouttostudyondifferentbracesmodels，themajorbeam’Seffectsandtheyieldme

9、chanismunderinfrequentearthquake，andinvolvedmega—framestructures’capacitytopreventcollapseduringmegaearthquakeAccordingtotheresultsobtained：themajorbeamtrusstypeuses‘‘X’’bracesor‘‘A’’bracesthatiscloserbutdifferentfrom‘‘／