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ID:11631363
大小:1.48 MB
页数:15页
时间:2018-07-13
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1、KSJFHKDSJHFJKSHSDKFHDJKHFSJKFDHJFHJKSHFJKSHFJKSHFKJ毕业设计(论文)外文翻译设计(论文)题目:宁波新城艺术宾馆2#楼结构设计与预算学院名称:建筑工程专业:土木工程学生姓名:顾丽敏学号:06404010101指导教师:袁坚敏2010年01月10日SKHFKNSNFSKHFSJKNFKFNSKNFSFKLSFJKNFJKSLKFHJKSKSJFHKDSJHFJKSHSDKFHDJKHFSJKFDHJFHJKSHFJKSHFJKSHFKJ外文原文I:Afund
2、amentalexplanationofthebehaviourofreinforcedconcretebeamsinflexurebasedonthepropertiesofconcreteundermultiaxialstressM.D.KotsovosDepartmentofCivilEngineering,ImperialCollegeofScienceandTechnology,London(U.K.)Thepaperquestionsthevalidityofthegenerallyacce
3、ptedviewthatforareinforcedconcretestructuretoexhibit"ductile"behaviourunderincreasingloaditisnecessaryforthestressstrainrelationshipsofconcretetohaveagraduallydescendingpost-ultimatebranch.Experimentaldataarepresentedforreinforcedconcretebeamsinbendingwh
4、ichindicatethepresenceoflongitudinalcompressivestrainsonthecompressivefaceinexcessof0.0035.Itisshownthatthesestrains,whichareessentialfor"ductile"behaviour,arecausedbyacomplexmultiaxialcompressivestateofstressbelowultimatestrengthratherthanpostultimatema
5、terialcharacteristics.Thepresenceofacomplexstresssystemprovidesafundamentalexplanationforbeambehaviourwhichdoesnotaffectexistingdesignprocedures.1.INTRODUCTIONThe"planesections"theorynot,onlyisgenerallyconsideredtodescriberealisticallythedeformationrespo
6、nseofreinforcedandprestressedconcretebeamsunderflexureandaxialload,butisalsoformulatedsothatitprovidesadesigntoolnotedforbothitseffectivenessandsimplicity[1].Thetheorydescribesanalyticallytherelationshipbetweenload-carryingcapacityandgeometriccharacteris
7、ticsofabeambyconsideringtheequilibriumconditionsatcriticalcross-sections.Compatibilityofdeformationissatisfiedbythe"planecross-sectionsremainplane"assumptionandthelongitudinalconcreteandsteelstressesareevaluatedbythematerialstress-straincharacteristics.T
8、ransversestressesandstrainsareignoredforthepurposesofsimplicity.Thestress-straincharacteristicsofconcreteincompressionareconsideredtobeadequatelydescribedbythedeformationalresponseofconcretespecimenssuchasprismsorcylinders
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