陶粒混凝土梁受弯性能的试验研究

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1、长沙理工大学硕士学位论文陶粒混凝土梁受弯性能的试验研究姓名：莫振林申请学位级别：硕士专业：结构工程指导教师：杨伟军20081101混凝土。总之，本文对陶粒混凝土梁受弯性能试验研究具有一定的理论意义，为陶粒混凝土在工业与民用建筑上的广泛应用提供了理论依据。关键词：陶粒混凝土；塑性发展系数Y；钢筋应变不均匀系数1lr；平均裂缝间距Z。；握裹力；延性ⅡAbstractAstheceramisiteaggregateconcretehavemanyadvantagesintheproject，theceramisi

2、teaggregateconcretepossessawideprospect．However,Thecodeoflightweightaggregateconcreteisnotmatureandperfect，itcannotgiveastrongsupportinthepracticalwork．Throughthestudyof12piecesofceramisiteaggregateconcretebeams，thestrainofconcreteandsteel，crackingload，yie

3、ldload，ultimateload，deflection，crackexpansion、theload—deflectioncurveismeasuredandplotted，theexpansionofcrackisdescribedinthepaper．Comparedwiththeconcretebeams，theresultscanbeconcludedinseveralaspects．1．Basedonthetestreach，thedamageconformationisdifferentb

4、etweentheceramisiteaggregateconcreteandthecommonconcrete，fortheinterfacebetweenthegroutingmortarandceramisiteaggregateismorecompactandthestrengthofaggregateisusuallylowerthanthegroutingmortar,crackformsinneraggregateatfirst．2．Basedonthetestresearch，intheco

5、nditionofhigh—reinforcementratio，thecrackofceramisiteaggregatebeamismorewell—distributedandmorecompactthancommonaggregatebeam．Itshowsthat，thecohesionbetweenconcreteandsteelisbettertomaketheirtransformationmoreharmoniousandcoordinate．3．Forthedifferencesinca

6、lculativemodelscalculatingthecrack—load，throughthetest，theplasticgrowthmodulusformulaofceramisiteaggregatebeamissubmitted．4．Fromthedefinitionoftheleverofinternalforce，usethetestresults，theactualvalueisacquiredatthecracksection．Comparedwiththeexperientialva

7、lue，thecodecondensedformulaisbeenprovedreliable．5．Inthetest，thestrainofthesteelonthecracksectionandtheaveragesteelstrainaremeasuredout．Throughthelinearregression，thenon-uniformcoefficientofsteelstrainamongthecrackissuggested，andthencomparethe∞linordertoest

8、imatethediscriminationofthebondstressbetweenthesedifferentconcrete6．Throughthetestresearch，theaveragecrackdistance乞hasthedirectproportionwiththeconcreteprotectionC．Inthispaper,totheactualvalue，thesuggestivefo