期四第年材建海术技其及品制凝混P47息信闻新沿前技科UHPC-NC界面连接性能研究进展周阳，陈斌，罗宇（湖南工业大学土木工程学院，湖南株洲1412007)摘要：通过对国内外超高性能混凝土－普通混凝土（UHPC-NC)界面试验和相关数值模拟研究进程的系统梳理和总结，阐述了探究UHPC-NC界面连接性能的试验方法及界面破坏模式；对比分析了UH-PC-NC界面连接性能的影响因素；综合当前的数值模拟案例，分析了数值模拟成功的关键因素。结果表明：UHPC与普通水泥基材料连接性能可靠，2种材料的组合构件在整体性上甚至超过一部分普通混凝土结构；影响UHPC-NC界面连接性能的主要因素是材料表面的粗糙度，在一定范围内，粗糙度越高，两者的连接越可靠；超高性能混凝土在实际工程中的应用具有良好的推广性。关键词：超高性能混凝土；界面连接；加固；综述中图分类号：TU528文献标志码：A文章编号：1006-1177(2023)04-47-53doi:10.3969/j.issn.1006-1177.2023.04.010ResearchProgressonInterfaceConnectionPerformanceofUHPC-NCZhouYang,ChenBin,LuoYu(CivilEngineeringCollege,HunanUniversityofTechnology,Zhuzhou412007,China)Abstract:Ultra-highperformanceconcrete(UHPC),anewtypeofdurablecement-basedcompositematerial,hasthecharacteristicsofhightoughnessandstrength.Itiswidelyusedtostrengthendamagedordinaryconcrete(NC).ThereliableconnectionbetweentheinterfaceisthekeytoallowingtheworkbetweentheUHPCandtheNC.Theim-provementoftheconnectionperformancebetweenUHPCandNChasalsodrivenalargenumberofstudies.Bysystemati-callycombingandsummarizingtheresearchoftheUHPC-NCinterfacetestandrelatednumericalsimulationdomesti-callyandabroad,thispaperexpoundedatestmethodandinterfacefailuremodetoexploretheperformanceoftheUHPC-NCinterfaceconnection.IthascomparedandanalyzedtheinfluencefactorsofUHPC-NCinterfaceconnectionperformance,andthenstudiedthekeyfactorsofsuccessfulnumericalsimulationusingthecurrentnumericalsimula-tioncases.Theresearchresultsshowthat:theconnectionperformancebetweenUHPCandordinarycement-basedmate-rialsisreliable;theintegrityofthecompositemembersofthetwomaterialsismoreeventhanthatofsomeordi-naryconcretestructures;themainfactoraffectingtheinterfaceconnectionperformanceofUHPC-NC...
