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《不同縱筋率對(duì)剪跨比為15的有腹筋約束梁受剪性能的影響》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫(kù)。
1、英文摘要ABSTRACTIngeneral，toensurethefinalshearfaille，averylarge10ngitudinalreinforcementratio，usuallylargerthan2．8％，waschosenasaprerequisiteinpreviousstudiesonshearbehaviorofreinforcedconcretebeams．Itisverydifferentfromthatinpractice，undersuchcircumstancesthelongitudinalrei
2、nforcementratioisamong1．0～1．5％．Thecodifieddesignequatiousbased0nsuchtestirtgdatamaybeul'tcortservative．SystematicinvestigationforeffectoflongitudinalreinforcementratioonshearbehaviorofRCbeamsisparticularlyrare．Amajorityofpreviousstudiesontheeffectoflongi【tudinalreinforce
3、mentratiotoshearbehaviorofreinforcedconcretememberswerefocusingonultimatecapacity,onlyafewwereengagedindetailedrecordingoftheoveralldevelopmentofcrackingandinvestigationoffinalfailuremodes．Inthispaper,fiverestrainedbeamswithwebanddifferentlongitudinalreinforcementweretes
4、tedunderstaticpointloads，withtheshear-spanratiobeingkeptaround1．5．Onthisbasis，theoverallprocessofcrackingdevelopmentundershearandtheeffectoflongitudinalreinforcementratioonitwasinvestigated．Atfirst，developmentofvariouscrackscarefullyrecordedandstrainsOilboththerebarsandt
5、hestirrupsweremeasuredindetail．togetherwi血thedeftectionsofthebeam．Insuchaway,correlationbetweenthemeasuredstra；nprofilesofthereinforcementandtheobservedcrackingdevelopmentofeachspecimenwaspursued．Principalfactorscontributingtothecrackingpatternandfailuremodewerefiguredou
6、tasaresult．Secondly,comparisonofthetestedresultsunveiledeffectofvariouslongitudinalreinforcementratiosondevelopmentofcracks，finalfailuremode，andultimatecapacity．Primaryconclusionswerethusdrawn．Moreover,themeasuredultimateshearfromthetestswerecomparedwiththatpredictedfrom
7、ChinaDesignCodeofReinforcedConcretestructures，GB50010--2002，andthatfromtheResponse2000，whichisbasedonmodifiedcompressionfieldtheorybyMichaelCollins，bothwereundertakenbeforetheexperiments．Theexperimentsshowed也atthecrackingprocessofsuchrestrainedbeamsinthispaperCanbedivide
8、dintothreephases，thatis，formationofthefanningzones，initializationanddevelopmentofsplittingcracksalonglo
