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forcedconcretestructurereinforcedwithanoverviewReinSincethereformandopeningup,withthenationaleconomy'srapidandsustaineddevelopmentofareinforcedconcretestructurebuilt,reinforcedwiththedevelopmentoftechnologyhasbeengreat.Therefore,topromotetheuseofadvancedtechnologyreinforcedconnectingtoimproveprojectqualityandspeedupthepaceofconstruction,improvelaborproductivity,reducecosts,andisofgreatsignificance.Reinforcedsteelbarsconnectingtechnologiescanbedividedintotwobroadcategorieslinkingweldingmachineryandsteel.Therearesixtypesofweldingsteelweldingmethods,andsomeapplytotheprefabricatedplant,andsomeapplytotheconstructionsite,someofbothapply.Therearethreetypesofmachinerycommonlyusedreinforcementlinkingmethodprimarilyapplicabletotheconstructionsite.Wayshasitsowncharacteristicsanddifferentapplication,andinthecontinuousdevelopmentandimprovement.Inactualproduction,shouldbebasedonspecificconditionsofwork,workingenvironmentandtechnicalrequirements,thechoiceofsuitablemethodstoachievethebestoverallefficiency.1、steelmechanicallink1.1radialsqueezelinkWillbeasteelsleeveintwosetstothehighly-reinforcedDepartmentwithsuperhighpressurehydraulicequipment(squeezetongs)alongsteelsleeveradialsqueezesteelcasing,insqueezingouttongssqueezepressureroleofasteelsleeveplasticitydeformationcloselyintegratedwithreinforcedthroughreinforcedsteelsleeveandWangLiang'sPositionwillbetwosolidsteelbarslinkedCharacteristic:Connectintensitytobehigh,performancereliable,canbearhighstressdrawandpigeonholetheloadandtiredloadrepeatedly.Easyandsimpletohandle,constructionfast,saveenergyandmaterial,comprehensiveeconomyprofitable,thismethodhasbeenalreadyalargeamountofapplicationintheproject.Applicablescope:SuitableforⅡ,Ⅲ,Ⅳgradereinforcingbar(includingweldingbadreinforcingbar)withribbingofФ18-50mm,connectionbetweenthesamediameterordifferentdiametersreinforcingbar.1.2mustsqueezelinkExtrudersusedinthecovers,reinforcedaxisalongthecoldmetalsleevesqueezededicatedtoinsertsleeveLanetwohotrollingsteeldrumsintoahighlyintegratedmechanicallinkingmethods.Characteristic:Easytooperateandjoiningfastandnothavingflamehomework,canconstructfor24hours,savealargenumberofreinforcingbarsandenergy.Applicablescope:Suitablefor,setupaccordingtofirstandsecondclassantidetonationrequirement-proofarmoredconcretestructureФⅡ,Ⅲgradereinforcingbarwithribbingofhotrollingof20-32mmjoinandconstructlive.1.3conethreadconnectingUsingconethreadtobearpulled,pressedbotheffortandself-lockingnature,undergogoodprincipleswillbereinforcedbylinkingintocone-processingthreadatthemomentthevalueofintegrationintothejointsconnectingsteelbars.Characteristic:Simple,allrightpreparatorycutofthecraft,connectingfast,concentricityisgood,havepatternpersonwhorestrainfromadvantagereinforcingbarcarboncontent.Applicablescope:Suitablefortheconcretestructureoftheindustry,civilbuildingandgeneralstructures,reinforcingbardiameterisforФforthethe16-40mmoneⅡ,Ⅲgradeverticality,itistheobliquetoorreinforcingbarshorizontaljoinconstructlive.conclusionsThesearenowcommonlyusedtoconnectsteelsynthesismethods,whichlinkstechnologyintheUnitedStates,Britain,Japanandothercountriesarewidelyused.Therearedifferentwaystoconnecttheirdifferentcharacteristicsandscopeoftheactualconstructionofproductiondependingonthespecificprojectchooseasuitablemethodofconnectingtoachievebothenergyconservationandsavingtimelimitforaprojectends.钢筋混凝土结构中钢筋连接综述改革开放以来，随着国民经济的快速、持久发展，各种钢筋混凝土建筑结构大量建造，钢筋连接技术得到很大的发展。因此，推广应用先进的钢筋连接技术，对于提高工程质量、加快施工速度、提高劳动生产率、降低成本，具有十分重要的意义。钢筋连接技术可分为钢筋焊接和钢筋机械连接两大类。钢筋焊接有6种焊接方法，有的适用于预制厂，有的适用于现场施工，有的两者都适用。钢筋机械连接常用有3种方法，主要适用于现场施工。各种方法有其自身特点和不同的适用范围，并在不断发展和改进。在实际生产中，应根据具体的工作条件、工作环境和技术要求，选用合适的方法以期达到最佳的综合效益。1、钢筋机械连接1.1径向挤压连接将一个钢套筒套在两根带肋钢筋的端部，用超高压液压设备（挤压钳）沿钢套筒径向挤压钢套管，在挤压钳挤压力作用下，钢套筒产生塑性变形与钢筋紧密结合，通过钢套筒与钢筋横肋的咬合，将两根钢筋牢固连接在一起。特点：接头强度高，性能可靠，能够承受高应力反复拉压载荷及疲劳载荷。操作简便、施工速度快、节约能源和材料、综合经济效益好，该方法已在工程中大量应用。适用范围：适用于Ф18～50mm的Ⅱ、Ⅲ、Ⅳ级带肋钢筋（包括焊接性差的钢筋），相同直径或不同直径钢筋之间的连接。1.2轴向挤压连接将两钢筋安放成对接形式，利用焊接电流通过两钢筋接触点产生塑性区及均匀的液体金属层，迅速施加顶锻力完成的一种压焊方法。特点：操作简单、速度快、无明火作业、可全天候施工，节约大量钢筋和能源。适用范围：适用于按一、二级抗震设防要求的钢筋混凝土结构中Ф20～32mm的Ⅱ、Ⅲ级热轧带肋钢筋现场连接施工。1.3锥螺纹连接利用锥螺纹能承受拉、压两种作用力及自锁性、密封性好的原理，将钢筋的连接端加工成锥螺纹，按规定的力矩值把钢筋连接成一体的接头。利用锥螺纹能承受拉、压两种作用力及自锁性、密封性好的原理，将钢筋的连接端加工成锥螺纹，按规定的力矩值把钢筋连接成一体的接头。特点：工艺简单可以预加工连接速度快同心度好，不受钢筋含碳量和有无花纹限制等优点。适用范围：适用于工业与民用建筑及一般构筑物的混凝土结构中，钢筋直径为Ф16～40mm的Ⅱ、Ⅲ级竖向、斜向或水平钢筋的现场连接施工。以上是对现今常用的钢筋连接方法的综述，这些连接技术在美国、英国、日本等国家均得到广泛应用。不同的连接方法有其不同的特点和适用范围，在实际施工生产中需视具体工程情况选择合适的连接方法，以达到既节约能源又节省工期的目的。