玻璃纤维GFRP筋混凝土构件正截面承载力设计方法研究

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1、国内图书分类号：TU377．9+l西南交通大学研究生学位论文篮姓级三QQ亘熟名廑迹申请学位级别王堂亟±专业援翌生隧道王程指导教师奎盍、业麴撞二oo七年六月篓西南交通大学硕士研究生学位论文第Ⅱ页ABSTRACTGlassfiberreinforcedpolymer(GVRP)materialshaveemergedasapracticalalternativematerialforproducingreinforcingbarsforconcretestructures，whichcansolvetheproblemssuchasdiffic

2、ultlyincisingtraditionalsteelreinforcedconcretesupportingpiles，complicatedteehttiquesandbadsecuritywhenshieldpassedbytheportalinshieldshafts．GFRPreinforcingbarsofferadvantagesOVersteelreinforcementinthatGFRPbarsarehightensilestrength,nonmagnetic，non-corrosive,lightweight，l

3、owthermalandelectricandeasyincision．DuetootherdiffcrencesinthephysicalandmechanicalbehaviorofGFRPmatedalsVerSUSsteel,uniqueguidanceontheengineeringandconstructionofcoilcretestructuresreinforcedwithGn心barsisneeded,becauseGn冲barsareerispmatedalswithlowelasticmodulus，characte

4、rizedbyalinearlyelasticstress-strainrelationshipuntilfailure．NowthereareonlysomeexperimentalresearchesonconcretemembersreinforcedwithGF】髓bars．butnoGFRPreinforcementapplicationsinourentmtry．贴epaperjsimportantcomponentsofdesignmethodofconcretesupportingpileinshieldshaftsrein

5、forcedwithG两潆barsinChengduMetro,andstudythehead-oncross-sectioncapacitytheoryofGFRPbarsconcretemembersbased011tensiletestsofGn心bars，pullouttestsbetweenGFRPreinforcementandconcrete．andmembersofGn①barsconcretetests：1．nlctestiSUSedtodeterminethetensilepropertiesofGH冲bars．andt

6、ensilestrengthandmodulusofGFRPbarsarccalculatedonthebasisprobabilitystatistics．Finally,standardizationexaminationandhowtosampleGFRPbarsaledisused．2．PullouttestsarcconductedtotestbondstressbetweenGFIoreinforcementandconcrete,andthefactors也ataffectbondstrengtharestudied．Asaf

7、e．economicalandlo#calcalculatingmethodofdevelopmentlengthisappliedbasedonstatisticandregressionresultsofthefactom．3，GFRPconcreteremembersandReinforcedConcreteremembersaretested,respectively,andtheirfailturemechanicsaredifferent,butGFRPbarsconcretebeamsandeccentriccolumnsha

8、vethesanlefailturemodels，whichdividedintotwotypes，namelywhenreinforcementratiolessthanbal