pvcu内管的八边形中空夹层钢管混凝土柱轴压承载力研究

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1、浙江工业大学硕士学位论文摘要加载过程和承载力的对比研究。文章还对此类构件进行了计算机有限元模拟分析，归纳了试件径厚比、空心率对其承载力的影响。本文对PVC．U内管的八边形中空夹层钢管混凝土柱承载力的破坏形态、影响因素进行了系统研究，还将其承载力与内管为钢管的八边形中空夹层钢管混凝土柱进行了对比分析，进一步肯定了其工程应用价值，希望这种新型构件能够在未来的实际工程中得到推广应用。关键词：PVC-U，八边形，中空夹层钢管混凝土，轴压，承载力试验，有限元分析浙江工业大学硕士学位论文ABSTRACTASTUDYONTHEBEARINGCAPACIT

2、Y0FAXIALCOⅣ噼I之ESSIONOFOCTAGON．SHAPEDCONCRETE—FILLEDDOUBLESKINSTEELTUBULARMTHPVC．UASITSDⅣERTUBEABSTRACT’Ihepast1O—oddyearshaswitnessedthedeVelopmentoft11econcrete—filleddoubles妯nSteeltubular(CFDSST)．Asanewkindofstmcture，itenjoysaseriesofadVantagessuchashi曲neXuralrigidi吼hi曲b

3、e撕ngcapaCi妣goodplastic毋andtoughnessandconvenientconstmction．Atpresent，researcheswithregardtothebehaviorofOctagon—ShapedConcrete—FilledDoubleSkinSteelTubular(0SCFDSST)underaxialcompressionandundereccentriccompressionareaVailableathome．Thefocusofthisstudy一0SCFDSSTwithPVC—Uas

4、itsinnertubeisanewtypeofstructurethatbearstheresemblancetoOSCFDSSTwithsteeltubeasitsinnertube．ThisstmcturefeaturesPVC．Uasitsinnertubeandoctagon—sh印edsteelasitSoutertubewithconcretesandwichedinbetv旧en．Incon勃阻stwitIlOSCFDSSTwimsteeltubeaSitsirulersection，itislightilldeadweig

5、htandlowinpdce．Apart行omthat，PVC—Ui彻ertubec锄alsobeutilizedasdownpipe．．Ⅳ．浙江工业大学硕士学位论文ABSTRACTInthe6rstplace，releVantstudiesconcemingCFDSST，OSCFDSST，andplastictubematedal’sapplicationinthecompositestructureareexaminedandanargumentforthemechanicalrationalityandtheengineeringpr

6、acticabili妙ofthestmctureofOSCFDSSTwithPVC—UasitsinnertubeisproVided．ThesecondpartisdedicaCedtoadetailedreportonthedesignandproduction，geome仃icdimensionandmaterial—selectionofthespecimensemployedintheaxialcompressionexperiment．Thep印erthenmoVesontoanelaboratedescriptionoft王1

7、epreparato叫work，andtheentireprocessofuploadanddestmctionofthespecimens．Throu曲ananalysisofmeexperimentalresults，asumma巧ofthepossibledestructionconfigurationplusacontrastiVestudyontheuploadingprocessandbe撕ngcapac时arepresented．Inaddition，thisp印eralsoattemptstoconductacomputer

8、de6niteelementsimulationanalysis，whichledtoasumma巧oftheimpactofthespecimens’di锄eter／thick