钢管约束再生混凝土轴压试验研究

钢管约束再生混凝土轴压试验研究一、本文概述Overviewofthisarticle随着建筑行业对可持续发展和环境友好型材料的日益关注，再生混凝土作为一种利用建筑废弃物制成的环保材料，已逐渐成为研究热点。然而，再生混凝土的性能受到其内部组分和微观结构的影响，相较于传统混凝土存在一定的差异。因此，深入了解再生混凝土在受力状态下的性能表现，对于推动其在工程实践中的应用具有重要意义。Withtheincreasingattentionoftheconstructionindustrytosustainabledevelopmentandenvironmentallyfriendlymaterials,recycledconcrete,asanenvironmentallyfriendlymaterialmadefromconstructionwaste,hasgraduallybecomearesearchhotspot.However,theperformanceofrecycledconcreteisinfluencedbyitsinternalcomponentsandmicrostructure,andtherearecertaindifferencescomparedtotraditionalconcrete.Therefore,adeepunderstandingoftheperformanceofrecycledconcreteunderstressisofgreatsignificanceforpromotingitsapplicationinengineeringpractice.本文旨在通过钢管约束再生混凝土轴压试验，探讨再生混凝土在轴压作用下的力学性能和破坏模式。通过对比分析不同钢管约束条件下的试验结果，揭示钢管约束对再生混凝土轴压性能的影响规律，为再生混凝土结构的优化设计提供理论依据。Thisarticleaimstoexplorethemechanicalpropertiesandfailuremodesofrecycledconcreteunderaxialcompressionthroughsteeltubeconfinedrecycledconcreteaxialcompressiontests.Bycomparingandanalyzingtheexperimentalresultsunderdifferentsteelpipeconstraints,theinfluenceofsteelpipeconstraintsontheaxialcompressionperformanceofrecycledconcreteisrevealed,providingatheoreticalbasisfortheoptimizationdesignofrecycledconcretestructures.本文首先介绍了再生混凝土的制备方法和基本性能，为后续试验的开展奠定基础。接着，详细阐述了钢管约束再生混凝土轴压试验的设计思路、试验装置、试件制作及加载方案等关键内容。在此基础上，通过对试验数据的整理和分析，探讨了钢管约束对再生混凝土轴压强度、变形性能及破坏模式的影响。结合试验结果和相关理论，对钢管约束再生混凝土轴压性能的影响机制进行了深入分析，并提出了相应的工程应用建议。Thisarticlefirstintroducesthepreparationmethodandbasicpropertiesofrecycledconcrete,layingthefoundationforsubsequentexperiments.Subsequently,thedesignconcept,testingequipment,specimenfabrication,andloadingschemeoftheaxialcompressiontestforsteeltubeconfinedrecycledconcretewereelaboratedindetail.Onthisbasis,theinfluenceofsteelpipeconstraintsontheaxialcompressivestrength,deformationperformance,andfailuremodeofrecycledconcretewasexploredthroughtheorganizationandanalysisofexperimentaldata.Basedonexperimentalresultsandrelevanttheories,anin-depthanalysiswasconductedontheinfluencemechanismoftheaxialcompressionperformanceofsteeltubeconfinedrecycledconcrete,andcorrespondingengineeringapplicationsuggestionswereproposed.本文的研究成果有助于深入理解再生混凝土在钢管约束条件下的轴压性能，为再生混凝土结构的合理设计和优化提供有益参考。本文的研究方法和结论也可为其他类似材料的性能研究提供借鉴和启示。Theresearchresultsofthisarticlecontributetoadeeperunderstandingoftheaxialcompressionperformanceofrecycledconcreteundersteelpipeconstraints,andprovideusefulreferencesfortherationaldesignandoptimizationofrecycledconcretestructures.Theresearchmethodsandconclusionsofthisarticlecanalsoprovidereferenceandinspirationfortheperformanceresearchofothersimilarmaterials.二、再生混凝土与钢管约束再生混凝土概述OverviewofRecycledConcreteandSteelTubeConstrainedRecycledConcrete随着全球资源日益紧张，建筑行业对可持续性和环境友好型材料的需求日益迫切。再生混凝土作为一种重要的环保建筑材料，其研究和应用逐渐受到广泛关注。再生混凝土，主要由废弃混凝土经过破碎、筛分和处理后，与天然骨料、水泥、水等按一定比例混合制成。这种材料不仅有效利用了建筑废弃物，减少了对天然资源的依赖，还降低了环境负担。Asglobalresourcesbecomeincreasinglyscarce,theconstructionindustry'sdemandforsustainableandenvironmentallyfriendlymaterialsisbecomingincreasinglyurgent.Recycledconcrete,asanimportantenvironmentallyfriendlybuildingmaterial,hasgraduallyreceivedwidespreadattentioninitsresearchandapplication.Recycledconcreteismainlymadebycrushing,screening,andtreatingwasteconcrete,andmixingitwithnaturalaggregates,cement,water,etc.inacertainproportion.Thismaterialnotonlyeffectivelyutilizesconstructionwaste,reducesdependenceonnaturalresources,butalsoreducesenvironmentalburden.钢管约束再生混凝土则是在再生混凝土的基础上，通过在混凝土外部包裹钢管的方式，增强混凝土的抗压性能和延性。钢管的约束作用能够限制混凝土的横向变形，从而提高其承载能力。钢管约束再生混凝土结合了钢管和再生混凝土的优点，具有更高的强度和更好的延性，特别适用于轴压等高强度要求的工程场合。Steeltubeconfinedrecycledconcreteisbasedonrecycledconcreteandenhancesthecompressiveperformanceandductilityofconcretebywrappingsteeltubesoutsidetheconcrete.Therestrainingeffectofsteelpipescanlimitthelateraldeformationofconcrete,therebyimprovingitsbearingcapacity.Steeltubeconfinedrecycledconcretecombinestheadvantagesofsteeltubeandrecycledconcrete,withhigherstrengthandbetterductility,makingitparticularlysuitableforengineeringapplicationswithhighstrengthrequirementssuchasaxialcompression.本研究旨在通过轴压试验，深入探究钢管约束再生混凝土的力学性能，包括其抗压强度、变形特性以及破坏模式等。通过试验数据的分析和理论模型的建立，为钢管约束再生混凝土在实际工程中的应用提供理论依据和技术支持。这对于推动再生混凝土材料的广泛应用，实现建筑行业的绿色可持续发展具有重要意义。Thisstudyaimstoinvestigatethemechanicalpropertiesofsteeltubeconfinedrecycledconcretethroughaxialcompressiontests,includingitscompressivestrength,deformationcharacteristics,andfailuremodes.Byanalyzingexperimentaldataandestablishingtheoreticalmodels,theoreticalbasisandtechnicalsupportareprovidedfortheapplicationofsteeltubeconfinedrecycledconcreteinpracticalengineering.Thisisofgreatsignificanceforpromotingthewidespreadapplicationofrecycledconcretematerialsandachievinggreenandsustainabledevelopmentintheconstructionindustry.三、钢管约束再生混凝土轴压试验设计与方法Designandmethodofaxialcompressiontestforsteeltubeconfinedrecycledconcrete在进行钢管约束再生混凝土轴压试验之前，我们进行了详尽的试验设计与方法策划。试验的主要目的是研究和理解钢管对再生混凝土在轴压作用下的约束效果，以及这种约束如何影响再生混凝土的力学行为。Beforeconductingtheaxialcompressiontestofsteeltubeconfinedrecycledconcrete,weconductedadetailedexperimentaldesignandmethodplanning.Themainpurposeoftheexperimentistostudyandunderstandtheconstrainteffectofsteelpipesonrecycledconcreteunderaxialcompression,andhowthisconstraintaffectsthemechanicalbehaviorofrecycledconcrete.我们选择了合适的钢管和再生混凝土材料。钢管的选用考虑到了其强度、刚度和延性，而再生混凝土则由回收的混凝土碎块经过破碎、筛分和处理后制成。我们按照不同的比例混合了天然骨料和再生骨料，以研究不同比例对再生混凝土性能的影响。Wehavechosensuitablesteelpipesandrecycledconcretematerials.Theselectionofsteelpipestakesintoaccounttheirstrength,stiffness,andductility,whilerecycledconcreteismadebycrushing,screening,andprocessingrecycledconcretefragments.Wemixednaturalaggregateandrecycledaggregateindifferentproportionstostudytheeffectofdifferentproportionsontheperformanceofrecycledconcrete.试验设计采用了多种不同的钢管直径和厚度，以及不同的再生混凝土配比。我们设计了多组对照试验，每组试验都包含了不同的钢管约束条件和再生混凝土配比，以全面考察钢管约束对再生混凝土轴压性能的影响。Theexperimentaldesignadoptedvarioussteelpipediametersandthicknesses,aswellasdifferentproportionsofrecycledconcrete.Wedesignedmultiplecontrolexperiments,eachcontainingdifferentsteelpipeconstraintsandrecycledconcreteratios,tocomprehensivelyinvestigatetheeffectofsteelpipeconstraintsontheaxialcompressionperformanceofrecycledconcrete.在试验过程中，我们采用了高精度的测量设备，包括压力传感器、位移计和应变计等，以精确测量轴压作用下的压力、位移和应变等参数。同时，我们也对试验过程进行了全程录像和记录，以便后续的数据分析和结果解读。Duringtheexperiment,weusedhigh-precisionmeasurementequipment,includingpressuresensors,displacementgauges,andstraingauges,toaccuratelymeasureparameterssuchaspressure,displacement,andstrainunderaxialpressure.Atthesametime,wealsorecordedandrecordedtheentireexperimentalprocessforsubsequentdataanalysisandresultinterpretation.在试验过程中，我们严格控制了试验条件，如温度、湿度和加载速率等，以确保试验结果的准确性和可靠性。加载过程中，我们采用了位移控制的加载方式，以保证试件在恒定的速度下受到压力，从而更准确地模拟实际工程中的受力情况。Duringtheexperiment,westrictlycontrolledthetestconditions,suchastemperature,humidity,andloadingrate,toensuretheaccuracyandreliabilityofthetestresults.Duringtheloadingprocess,weadoptedadisplacementcontrolledloadingmethodtoensurethatthespecimenisunderpressureataconstantspeed,therebymoreaccuratelysimulatingthestresssituationinactualengineering.我们的试验设计和方法充分考虑了各种可能影响试验结果的因素，并采用了科学、严谨的方法来确保试验的准确性和可靠性。我们期待通过这项研究，能够更深入地理解钢管约束再生混凝土在轴压作用下的力学行为，为未来的工程实践提供有益的参考和指导。Ourexperimentaldesignandmethodsfullyconsidervariousfactorsthatmayaffecttheexperimentalresults,andadoptscientificandrigorousmethodstoensuretheaccuracyandreliabilityoftheexperiment.Wehopethatthroughthisstudy,wecangainadeeperunderstandingofthemechanicalbehaviorofsteeltubeconfinedrecycledconcreteunderaxialcompression,andprovideusefulreferenceandguidanceforfutureengineeringpractices.四、钢管约束再生混凝土轴压试验结果分析Analysisofaxialcompressiontestresultsofsteeltubeconfinedrecycledconcrete本研究对钢管约束再生混凝土轴压试验的结果进行了深入的分析。试验数据显示，钢管约束对再生混凝土的抗压强度有显著的增强作用。与未约束的再生混凝土相比，钢管约束的再生混凝土在轴压作用下的承载能力明显提高。Thisstudyconductedanin-depthanalysisoftheresultsofaxialcompressiontestsonsteeltubeconfinedrecycledconcrete.Experimentaldatashowsthatsteelpipeconfinementhasasignificantenhancingeffectonthecompressivestrengthofrecycledconcrete.Comparedwithunconstrainedrecycledconcrete,thebearingcapacityofsteeltubeconstrainedrecycledconcreteunderaxialcompressionissignificantlyimproved.钢管的约束作用有效地限制了再生混凝土在受压过程中的横向变形，提高了其抗压强度。钢管的刚性和强度有效地传递并分散了再生混凝土中的压力，使得再生混凝土在承受轴压时更加均匀，从而提高了其整体的承载能力。Therestrainingeffectofsteelpipeseffectivelylimitsthelateraldeformationofrecycledconcreteduringcompression,improvingitscompressivestrength.Therigidityandstrengthofsteelpipeseffectivelytransmitanddispersethepressureinrecycledconcrete,makingitmoreuniformwhensubjectedtoaxialcompression,therebyimprovingitsoverallbearingcapacity.钢管与再生混凝土之间的相互作用也对试验结果产生了重要影响。在轴压作用下，钢管与再生混凝土之间产生了摩擦力，这种摩擦力进一步增强了再生混凝土的抗压强度。同时，钢管的存在还提高了再生混凝土的延性，使其在达到抗压强度后仍然能够保持良好的变形能力。Theinteractionbetweensteelpipesandrecycledconcretealsohasasignificantimpactonthetestresults.Underaxialcompression,frictionisgeneratedbetweensteelpipesandrecycledconcrete,whichfurtherenhancesthecompressivestrengthofrecycledconcrete.Atthesametime,thepresenceofsteelpipesalsoimprovestheductilityofrecycledconcrete,allowingittomaintaingooddeformationabilityevenafterreachingcompressivestrength.试验还发现，钢管的壁厚和直径对约束效果有显著影响。壁厚较大的钢管能够提供更好的约束效果，使得再生混凝土的抗压强度得到更大的提高。而钢管直径的影响则较为复杂，需要在后续的研究中进一步探讨。Theexperimentalsofoundthatthewallthicknessanddiameterofthesteelpipehaveasignificantimpactontheconstrainteffect.Steelpipeswithlargerwallthicknesscanprovidebetterrestrainingeffects,resultinginagreaterimprovementinthecompressivestrengthofrecycledconcrete.Theinfluenceofsteelpipediameterisrelativelycomplexandneedsfurtherexplorationinsubsequentresearch.通过对比分析不同配合比、不同养护条件下的钢管约束再生混凝土轴压试验结果，我们发现配合比和养护条件对试验结果也有一定影响。合理的配合比和良好的养护条件可以进一步提高钢管约束再生混凝土的抗压强度。Bycomparingandanalyzingtheaxialcompressiontestresultsofsteeltubeconfinedrecycledconcreteunderdifferentmixproportionsandcuringconditions,wefoundthatthemixproportionsandcuringconditionsalsohaveacertaininfluenceonthetestresults.Reasonablemixproportionsandgoodcuringconditionscanfurtherimprovethecompressivestrengthofsteeltubeconfinedrecycledconcrete.钢管约束对再生混凝土的轴压性能具有明显的增强作用。在实际工程中，可以通过合理设计钢管的壁厚、直径以及选择合适的配合比和养护条件来优化钢管约束再生混凝土的性能，以满足不同的工程需求。Theconfinementofsteelpipeshasasignificantenhancingeffectontheaxialcompressionperformanceofrecycledconcrete.Inpracticalengineering,theperformanceofsteelpipeconfinedrecycledconcretecanbeoptimizedbyreasonablydesigningthewallthicknessanddiameterofsteelpipes,selectingappropriatemixproportionsandcuringconditions,tomeetdifferentengineeringrequirements.五、钢管约束再生混凝土轴压性能影响因素研究Researchontheinfluencingfactorsofaxialcompressionperformanceofsteeltubeconfinedrecycledconcrete在钢管约束再生混凝土轴压性能的研究中，多种因素会对材料的力学行为产生影响。本文将从再生骨料取代率、钢管径厚比、加载速率以及约束效应系数等方面，深入探讨这些因素对钢管约束再生混凝土轴压性能的影响。Inthestudyoftheaxialcompressionperformanceofsteeltubeconfinedrecycledconcrete,variousfactorscanaffectthemechanicalbehaviorofthematerial.Thisarticlewilldelveintotheinfluenceoffactorssuchasthereplacementrateofrecycledaggregate,thediametertothicknessratioofsteelpipes,loadingrate,andconstrainteffectcoefficientontheaxialcompressionperformanceofsteelpipeconfinedrecycledconcrete.再生骨料的取代率是影响钢管约束再生混凝土轴压性能的重要因素。随着取代率的增加，钢管约束再生混凝土的抗压强度会有所降低。这是因为再生骨料的强度、弹性模量等性能通常低于天然骨料，导致再生混凝土的强度降低。然而，当取代率在一定范围内时，钢管的约束作用可以有效地提高再生混凝土的抗压强度，使其达到甚至超过普通混凝土的抗压强度。Thesubstitutionrateofrecycledaggregatesisanimportantfactoraffectingtheaxialcompressionperformanceofsteeltubeconfinedrecycledconcrete.Asthesubstitutionrateincreases,thecompressivestrengthofsteeltubeconfinedrecycledconcretewilldecrease.Thisisbecausethestrength,elasticmodulus,andotherpropertiesofrecycledaggregatesareusuallylowerthanthoseofnaturalaggregates,leadingtoadecreaseinthestrengthofrecycledconcrete.However,whenthesubstitutionrateiswithinacertainrange,therestrainingeffectofsteelpipescaneffectivelyimprovethecompressivestrengthofrecycledconcrete,makingitreachorevenexceedthecompressivestrengthofordinaryconcrete.钢管的径厚比也是影响钢管约束再生混凝土轴压性能的关键因素。径厚比越大，钢管的约束作用越弱，再生混凝土的抗压强度也会相应降低。因此，在设计钢管约束再生混凝土结构时，需要合理选择钢管的径厚比，以保证结构的承载能力和稳定性。Thediametertothicknessratioofsteelpipesisalsoakeyfactoraffectingtheaxialcompressionperformanceofsteelpipeconfinedrecycledconcrete.Thelargerthediametertothicknessratio,theweakertherestrainingeffectofthesteelpipe,andthecorrespondingdecreaseinthecompressivestrengthofrecycledconcrete.Therefore,whendesigningsteeltubeconfinedrecycledconcretestructures,itisnecessarytochoosethediametertothicknessratioofthesteeltubereasonablytoensurethebearingcapacityandstabilityofthestructure.加载速率对钢管约束再生混凝土轴压性能也有一定影响。随着加载速率的增加，钢管约束再生混凝土的抗压强度会有所提高。这是因为加载速率的增加会导致材料的应变率增加，进而引发材料的动态强化效应。然而，过高的加载速率可能导致钢管和再生混凝土之间的粘结力降低，从而影响结构的整体性能。Theloadingratealsohasacertaininfluenceontheaxialcompressionperformanceofsteeltubeconfinedrecycledconcrete.Astheloadingrateincreases,thecompressivestrengthofrecycledconcreteconfinedbysteelpipeswillbeimproved.Thisisbecauseanincreaseinloadingrateleadstoanincreaseinthestrainrateofthematerial,whichinturntriggersthedynamicstrengtheningeffectofthematerial.However,excessivelyhighloadingratesmayleadtoadecreaseinthebondingforcebetweensteelpipesandrecycledconcrete,therebyaffectingtheoverallperformanceofthestructure.约束效应系数是衡量钢管约束效果的重要指标。约束效应系数越大，钢管对再生混凝土的约束作用越强，再生混凝土的抗压强度也会相应提高。因此，在设计和优化钢管约束再生混凝土结构时，需要充分考虑约束效应系数的影响，以提高结构的承载能力和延性。Theconstrainteffectcoefficientisanimportantindicatorformeasuringtheconstrainteffectofsteelpipes.Thelargertheconstrainteffectcoefficient,thestrongertheconstrainteffectofsteelpipesonrecycledconcrete,andthecorrespondingincreaseincompressivestrengthofrecycledconcrete.Therefore,whendesigningandoptimizingsteeltubeconstrainedrecycledconcretestructures,itisnecessarytofullyconsidertheinfluenceofconstrainteffectcoefficientstoimprovethebearingcapacityandductilityofthestructure.再生骨料取代率、钢管径厚比、加载速率以及约束效应系数等因素都会对钢管约束再生混凝土轴压性能产生影响。在实际工程中，需要根据具体需求和条件，综合考虑这些因素的影响，以优化钢管约束再生混凝土结构的设计和施工。Factorssuchasthereplacementrateofrecycledaggregate,thediametertothicknessratioofsteelpipes,loadingrate,andconstrainteffectcoefficientcanallaffecttheaxialcompressionperformanceofsteelpipeconfinedrecycledconcrete.Inpracticalengineering,itisnecessarytocomprehensivelyconsidertheinfluenceofthesefactorsbasedonspecificneedsandconditions,inordertooptimizethedesignandconstructionofsteelpipeconstrainedrecycledconcretestructures.六、钢管约束再生混凝土轴压性能优化与提升措施Optimizationandimprovementmeasuresforaxialcompressionperformanceofsteelpipeconstrainedrecycledconcrete随着全球可持续发展理念的深入，再生混凝土作为一种环保材料在建筑领域的应用逐渐增多。钢管约束再生混凝土作为一种新型的复合材料，在轴压作用下表现出良好的力学性能。然而，为了进一步提升其轴压性能，需要采取一系列优化和提升措施。Withthedeepeningoftheglobalconceptofsustainabledevelopment,theapplicationofrecycledconcreteasanenvironmentallyfriendlymaterialintheconstructionfieldisgraduallyincreasing.Steeltubeconfinedrecycledconcrete,asanewtypeofcompositematerial,exhibitsgoodmechanicalpropertiesunderaxialcompression.However,inordertofurtherimproveitsaxialcompressionperformance,aseriesofoptimizationandenhancementmeasuresneedtobetaken.通过调整再生骨料的比例、粒径分布以及掺合料的种类和用量，可以优化再生混凝土的力学性能。例如，增加适量的高效减水剂和矿物掺合料，可以提高再生混凝土的抗压强度和耐久性。Byadjustingtheproportionandparticlesizedistributionofrecycledaggregates,aswellasthetypeanddosageofadmixtures,themechanicalpropertiesofrecycledconcretecanbeoptimized.Forexample,addinganappropriateamountofhigh-efficiencywaterreducingagentsandmineraladmixturescanimprovethecompressivestrengthanddurabilityofrecycledconcrete.钢管与再生混凝土之间的粘结性能对复合材料的整体性能具有重要影响。可以通过在钢管内壁涂抹界面剂、增加钢管内壁的粗糙度等方法，提高钢管与再生混凝土之间的粘结力。Thebondingperformancebetweensteelpipesandrecycledconcretehasasignificantimpactontheoverallperformanceofcompositematerials.Theadhesionbetweensteelpipesandrecycledconcretecanbeimprovedbyapplyinginterfaceagentsontheinnerwallofthesteelpipe,increasingtheroughnessoftheinnerwall,andothermethods.钢管的壁厚与直径比是影响钢管约束再生混凝土轴压性能的关键因素之一。通过试验研究和理论分析，可以确定最佳的钢管壁厚与直径比，以充分发挥钢管对再生混凝土的约束作用。Theratioofwallthicknesstodiameterofsteelpipesisoneofthekeyfactorsaffectingtheaxialcompressionperformanceofsteelpipeconfinedrecycledconcrete.Throughexperimentalresearchandtheoreticalanalysis,theoptimalratioofsteelpipewallthicknesstodiametercanbedeterminedtofullyexerttherestrainingeffectofsteelpipesonrecycledconcrete.在实际工程中，钢管约束再生混凝土往往会受到长期荷载的作用。在长期荷载作用下，钢管和再生混凝土的性能可能会发生退化。因此，在设计和施工过程中，应充分考虑长期荷载对钢管约束再生混凝土性能的影响，并采取相应的措施来减缓性能退化。Inpracticalengineering,steelpipeconfinedrecycledconcreteisoftensubjectedtolong-termloads.Underlong-termloading,theperformanceofsteelpipesandrecycledconcretemaydeteriorate.Therefore,inthedesignandconstructionprocess,theinfluenceoflong-termloadsontheperformanceofsteelpipeconfinedrecycledconcreteshouldbefullyconsidered,andcorrespondingmeasuresshouldbetakentoslowdownperformancedegradation.施工过程中的质量控制对于保证钢管约束再生混凝土轴压性能至关重要。应加强对原材料的质量控制、施工过程的监控以及成品的质量检测，确保钢管约束再生混凝土的质量符合设计要求。Qualitycontrolduringtheconstructionprocessiscrucialforensuringtheaxialcompressionperformanceofsteelpipeconfinedrecycledconcrete.Weshouldstrengthenthequalitycontrolofrawmaterials,monitortheconstructionprocess,andinspectthequalityoffinishedproductstoensurethatthequalityofsteelpipeconstrainedrecycledconcretemeetsthedesignrequirements.通过优化再生混凝土配合比、增强钢管与再生混凝土的粘结性能、优化钢管壁厚与直径比、考虑长期荷载作用下的性能退化以及加强施工质量控制等措施，可以有效提升钢管约束再生混凝土的轴压性能，推动其在建筑领域的更广泛应用。Byoptimizingthemixproportionofrecycledconcrete,enhancingthebondingperformancebetweensteelpipesandrecycledconcrete,optimizingthewallthicknesstodiameterratioofsteelpipes,consideringperformancedegradationunderlong-termload,andstrengtheningconstructionqualitycontrol,theaxialcompressionperformanceofsteelpipeconstrainedrecycledconcretecanbeeffectivelyimproved,promotingitswiderapplicationintheconstructionfield.七、结论与展望ConclusionandOutlook本文围绕“钢管约束再生混凝土轴压试验”这一主题进行了系统的研究。通过设计并实施一系列轴压试验，结合理论分析，得出了以下主要Thisarticleconductsasystematicstudyonthethemeof"axialcompressiontestofsteeltubeconfinedrecycledconcrete".Bydesigningandimplementingaseriesofaxialcompressiontests,combinedwiththeoreticalanalysis,thefollowingmainconclusionshavebeendrawn:钢管约束显著提高了再生混凝土的抗压强度和变形能力。与未约束的再生混凝土相比，在相同轴压荷载下，钢管约束的再生混凝土表现出更高的承载力和更好的延性。Theconfinementofsteelpipessignificantlyimprovesthecompressivestrengthanddeformationcapacityofrecycledconcrete.Comparedwithunconstrainedrecycledconcrete,steeltubeconstrainedrecycledconcreteexhibitshigherbearingcapacityandbetterductilityunderthesameaxialcompressiveload.钢管与再生混凝土之间的相互作用机制是影响其轴压性能的关键因素。钢管的约束作用不仅限制了再生混凝土的横向变形，还通过钢管与混凝土之间的摩擦力传递了更多的应力，从而提高了整体结构的承载能力。Theinteractionmechanismbetweensteelpipesandrecycledconcreteisakeyfactoraffectingtheiraxialcompressionperformance.Therestrainingeffectofsteelpipesnotonlylimitsthelateraldeformationofrecycledconcrete,butalsotransfersmorestressthroughthefrictionbetweensteelpipesandconcrete,therebyimprovingtheoverallload-bearingcapacityofthestructure.再生混凝土的来源和质量对其轴压性能具有重要影响。不同来源和质量的再生混凝土在轴压下的表现存在显著差异，因此在实际工程中应严格控制再生混凝土的质量。Thesourceandqualityofrecycledconcretehaveasignificantimpactonitsaxialcompressionperformance.Therearesignificantdifferencesinthepe