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水泥混凝土制品
何志文1，赵新铭1，叶宇霄2 ，胡少伟2
摘 要：为研究光纤传感器在短距离内混凝土管出现多缝情况下的布里渊频移特征，设计了系列双裂缝间距的板材拉伸试验；通过试验所得布里渊频移结果得出以下结论：当双缝间距小于50mm，难以区分裂缝个数；当双缝间距大于50mm，且小于200mm时，频移图的拟合波峰区间发生了变化；当双缝间距大于200mm，频移图峰值点会发生变化，最后，通过混凝土管压力试验，验证了利用分布式光纤监测混凝土管裂缝的有效性。Abstract:InordertostudytheBrillouinfrequencyshiftcharacteristicsofopticalfibersensorinthecaseofmultiplecracksofconcretepipeinashortdistance,aseriesofplatetensiletestswithdoublecrackspacingaredesigned.TheresultsofBrillouinfrequencyshiftobtainedfromthetestsshowthatwhenthedistancebetweentwocracksislessthan50mm,itisdifficulttodistinguishthenumberofcracks.Whenthedistancebetweentwocracksisgreaterthan50mmandlessthan200mm,therangeoffittingwavepeaksofthefrequencyshiftdiagramchanges.Whenthedistancebetweenthetwojointsismorethan200mm,thepeakpointofthefrequencyshiftdiagramchanges.Theconcretepipepressuretestisdesignedtoverifythetestresultsoftheplate.
何志文,赵新铭,叶宇霄,等.基于BOTDA的混凝土管双裂缝监测试验研究[J].混凝土与水泥制品,2020(7):43-46.
HE Zhi-wen,ZHAO Xin-ming,YE Yu-xiao,et al.Experimental Study on Double Crack Monitoring of Concrete Pipe Based on BOTDA[J].China Concrete and Cement Products,2020(7):43-46.
摘 要：为研究PCCP管材结构安全性问题，分析了PCCP结构材料性能、管道结构设计、制作工艺以及管道使用环境对PCCP结构安全性的影响。研究表明，在PCCP结构设计、管道制造和管线设计中，只要严格执行相关标准，PCCP的安全性是可控的。此外，结合实际生产经验，对提高PCCP生产质量提出了相应的控制措施。Abstract:InordertostudythequeryonthesafetyofPCCP structure,theinfluenceofPCCPstructurematerialperformance,pipelinestructuredesign,manufacturingprocessandpipelineserviceenvironmentonPCCPstructuresafetyareanalyzedindetail.ItisconsideredthatthesafetyofPCCPcanbecontrolledaslongastherelevantstandardsarestrictlyimplemented.Combinedwiththepracticalproductionexperience,thecorrespondingqualitymeasuresareputforwardtoimprovetheproductionqualityofPCCP.
李鸿杰.PCCP使用安全性分析与质量控制措施探讨[J].混凝土与水泥制品,2020(7):39-42+50.
LI Hong-jie.The Use Safety and Quality Control Measures of PCCP[J].China Concrete and Cement Products,2020(7):39-42+50.
邹文岗1，崔赛飞2，张 洋3，蔡凤维1
摘 要：为保证预应力混凝土管桩的承载能力，以力学为主线，分析了管桩桩身混凝土抗压强度、有效预应力和管身截面面积在预制混凝土管桩设计、生产、施工三阶段中的重要作用，强调了预应力混凝土管桩的应用需综合考虑符合设计、生产、施工等方面的要求，可为预应力混凝土管桩的可持续发展提供参考。Abstract:Inordertoensurethebearingcapacityofprestressedconcretepiles,takingmechanicsasthemainline,theimportantroleofconcretecompressivestrength,effectiveprestressandcross-sectionareaofpilesinthethreestagesofdesign,productionandconstructionofprecastconcretepilesareanalyzed,theapplicationofprestressedconcretepilesshouldbeconsideredcomprehensivelytomeettherequirementsofdesign,productionandconstruction,whichcouldprovideareferenceforthesustainabledevelopmentofprestressedconcretepiles.
邹文岗,崔赛飞,张洋,等.预应力混凝土管桩技术参数分析[J].混凝土与水泥制品,2020(7):34-38.
ZOU Wen-gang,CUI Sai-fei,ZHANG Yang,et al.Analysis on Technical Parameters of Precast Concrete Piles[J].China Concrete and Cement Products,2020(7):34-38.