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页数:7页
时间:2019-02-04
《配筋率对混凝土断裂参数的影响》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、Seediscussions,stats,andauthorprofilesforthispublicationat:https://www.researchgate.net/publication/272609888InfluenceofReinforcementRatiosonConcreteFractureParametersArticle·October2013DOI:10.4028/www.scientific.net/AMM.438-439.224CITATIONSREADS0493authors,in
2、cluding:ShaoweiHuJunLuNanjingHydraulicResearchInstituteNanjingHydraulicResearchInstitute96PUBLICATIONS227CITATIONS13PUBLICATIONS27CITATIONSSEEPROFILESEEPROFILESomeoftheauthorsofthispublicationarealsoworkingontheserelatedprojects:NationalFundsforDistinguishedY
3、oungScientistsofChina(51325904);theNationalMajorScientificInstrumentsDevelopmentProjectofChina(51527811).ViewprojectResearchoncombinedefficiencyanddurabilityoforganicsiliconpenetratingagentforprotectingconcretViewprojectAllcontentfollowingthispagewasuploadedb
4、yShaoweiHuon20September2016.Theuserhasrequestedenhancementofthedownloadedfile.DOI:10.13409/j.cnki.jdpme.2013.02.021第33卷第2期防灾减灾工程学报Vol.33No.22013年4月JournalofDisasterPreventionandMitigationEngineeringApr.2013*配筋率对混凝土断裂参数的影响沈培锋(嘉兴市水利水电勘察设计研究院,浙江嘉兴314001)摘要:为了研究配
5、筋率对混凝土断裂韧度、有效裂缝长度等断裂参数的影响,以及钢筋在混凝土裂缝扩展过程中的限裂作用,通过理论分析和钢筋混凝土断裂破坏特征,建立了钢筋混凝土双K断裂判据,在此基础上,设计制作了3组12根不同配筋率的三点弯曲梁试件,测得每个荷载-裂缝张口位移曲线(P-CMOD),研究了配筋率对钢筋混凝土3点弯曲梁试件断裂性能的影响。试验结果表明:钢筋混凝土试件的裂缝扩展过程也可以用双K断裂准则描述,起裂断裂韧度与配筋率无关,是材料的固有参数;失稳断裂韧度随配筋率的增大而逐渐增大;钢筋的存在还可以很好地抑制裂缝的扩展。关键词
6、:钢筋混凝土;配筋率;断裂韧度;有效裂缝长度中图分类号:TU352.1文献标识码:A文章编号:1672-2132(2013)02-0235-06InfluenceofReinforcementRatioonConcreteFractureParametersSHENPei-feng(JiaxingHydropowerInvestigationDesign&ResearchInstitute,Jiaxing314001,China)Abstract:Inordertostudytheinfluenceofthere
7、inforcementratioonfractureparameterssuchasthefracturetoughness,theeffectivecracklengthandtheeffectofthereinforcingbaroncrackpropagationofconcrete,throughthetheoreticalanalysisandfracturefailurecharacteristicsofre-inforcedconcrete,thedouble-Kfracturecriteriono
8、freinforcedconcretewasestablished,andonthisbasis,12three-pointbendingspecimensdividedinto3groupsandwithdifferentreinforce-mentratiosweredesignedandconstructed,thecurvesofload-crackmouthdi
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