版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
Unit5CompositeConstructionEnglishforCivilEngineering——Teacher:Prof.ZhengLuE-mail:luzheng111@(SchoolofCivilEngineering,TONGJIUNIVERSITY)Unit5CompositeConstruction5.1Overview(概述)5.1.1CompositeSteel-ConcreteBeam(钢-混凝土组合梁)5.1.2CompositeSlabs(组合楼板)5.1.3SteelReinforcedConcrete(SRC)(型钢混凝土)5.1.4ConcreteFilledTube(CFT)Columns(钢管混凝土)5.2Pre-stressedConcreteCompositeSlabs(预应力混凝土组合楼板)5.2.1Introduction(简介)5.2.2OverviewofPre-stressedConcreteCompositePlate(预应力混凝土组合楼板综述)5.2.3TheResearchandApplicationofPre-stressedCompositeSlabs(预应力组合楼板的研究及应用)5.2.4Conclusion(结论)In1988,BankofChinaTowerinHongKong(Fig.5-1)wascompleted.ThismagnificentbuildingwasthetallestbuildinginAsiaatthattime.Thebuildingwasconstructedusingcompositesteel-concretestructures,whichisanimportantmilestonesincethedevelopmentofthecompositeconstruction.中银大厦是组合结构史上的里程碑compositesteel-concretestructures钢-混凝土组合结构;milestone里程碑5.1OverviewCompositeconstructionisamethodofconstructionthatisusedinavarietyofengineeringandbuildingapplications.Employingdissimilarcomponents,suchasconcreteandsteelorfiberglassandfoam,forasingleuseorstructureiscalledcompositeconstruction.Thegoalisunifyingoftheindividualcomponentpropertiestocreateacompositematerialthatpossessesthedesiredpropertiesofallcomponentpieces.组合结构定义dissimilar不同的;fiberglass玻璃纤维;foam泡沫橡胶;unify统一;possess具有5.1OverviewInstructuralengineering,compositeconstructionexistswhentwodifferentmaterialsareboundtogethersostronglythattheyacttogetherasasingleunitfromastructuralpointofview.Whenthisoccurs,itiscalledcompositeaction.Onecommonexampleinvolvessteelbeamssupportingconcretefloorslabs.Ifthebeamisnotconnectedfirmlytotheslab,thentheslabtransfersallofitsweighttothebeamandtheslabcontributesnothingtotheloadcarryingcapabilityofthebeam.However,iftheslabisconnectedpositivelytothebeamwithstuds,thenaportionoftheslabcanbeassumedtoactcompositelywiththebeam.Ineffect,thiscompositecreatesalargerandstrongerbeamthanthesteelbeamalone.Thestructuralengineermaycalculateatransformedsectionasonestepinanalyzingtheloadcarryingcapabilityofthecompositebeam.如何实现组合作用concretefloorslabs混凝土楼板;stud铆钉;beassumedto假定为;stud铆钉5.1OverviewCommonstructuralmembersofcompositeconstructioninclude①Steel-ConcreteCompositeBeams(Steel-ConcreteFloorCompositeStructure),②CompositeSlabs,③SteelReinforcedConcrete:SteelReinforcedBeams,SteelReinforcedColumns,SteelReinforcedWalls,④ConcreteFilledTube.组合结构分类5.1OverviewCompositesteel-concretebeamismadeupofsteelbeamandslabbyshear
connector.Inthistypeofcompositebeam,concreteandsteelbeamhavejointstressandcompatibilityofdeformation,whichmakefulluseofthecompressivestrengthofconcreteandthetensilestrengthofsteel.Soitremarkablyraisesthestiffnessandstabilityofbeams.钢-混凝土组合梁的组合形式shear
connector剪力连接键;joint共同的5.1.1CompositeSteel-ConcreteBeamCompositesteel-concretebeamshavebeendevelopedveryfastinrecentyears,andmoreandmorewidelyusedasthehorizontalelementscarryingheavyloadsinbuildingsandbridges,obtainingnotableeconomicandsocialbenefits.组合结构定义horizontalelements水平构件5.1.1CompositeSteel-ConcreteBeamAdvantagesofcompositebeams:1. Theconcreteandsteelisutilizedeffectively.2. Moreeconomicalsteelsectionisusedincompositeconstructionthanconventionalnon-compositeconstructionforthesamespanandloading.3. Depthandweightofsteelbeamrequiredisreduced.So,theconstructiondepthalsoreducesincreasingtheheadroomofthebuilding.组合梁的优点utilize利用;conventional传统的;headroom净空5.1.1CompositeSteel-ConcreteBeam4. Compositebeamshavehigherstiffness,thustheyhavelessdeflectionthansteelbeams.5. Compositebeams(Fig.5-2)cancoverforlargespacewithouttheneedofanyintermediatecolumns.6. Compositeconstructionisfasterbecauseofusingrolledsteelandpre-fabricatedcomponentsthancast-in-situconcrete.7. Encasedsteelbeamhavehigherresistancetofireandcorrosion.组合梁的优点intermediatecolumns中柱;rolledsteel轧制钢;pre-fabricatedcomponents预制构件;cast-in-situconcrete现浇混凝土;encasedsteelbeam内置钢梁;corrosion腐蚀5.1.1CompositeSteel-ConcreteBeamCompositeslabscommonlyreferstosteeldeckreinforcedcompositeslabs(Fig.5-3)whichareformedbypouringconcreteonthesteelplateofdifferentkindsofconcaveandconvexribsordifferentkindsgrooves.Theyrelyonvariousformsofconcaveandconvexribsorgroovesandthensteelandconcretewillbeconnectedtogether.组合板steeldeck钢板;concaveandconvexribs凹凸肋;groove凹槽5.1.2CompositeSlabsSteelreinforcedconcrete(Fig.5-4)compositestructures(shortastheSRCcompositestructure)ismadeupofprofilesteel,longitudinalreinforcement,stirrupsandconcrete.Thatisconcretestructurewithprofilesteelinthecoreofstructurecomponentsandwithstirrupsandappropriate
verticalreinforcementoutofstructurecomponents.Itisdividedintotwotypesofstructure:allstructurecomponentsaresteelreinforcedconcretecompositestructuresandpartofstructurecomponentsaresteelreinforcedconcretecompositestructures.型钢—钢筋混凝土组合结构的组成成分profilesteel型钢;longitudinalreinforcement纵向钢筋;stirrup箍筋;appropriate适量的;verticalreinforcement竖向钢筋(应为纵向钢筋);5.1.3SteelReinforcedConcrete(SRC)Concrete-filledtubecolumnsconsistofasteeltubefilledwithconcrete.Theconcretecoreaddsstiffnessandcompressivestrengthtothetubularcolumnandreducesthepotentialforinwardlocalbuckling.Conversely,thesteeltubeactsaslongitudinalandlateralreinforcementfortheconcretecorehelpingittoresisttension,bendingmomentandshearandprovidingconfinementfortheconcrete.钢管混凝土柱的组成及优点inwardlocalbuckling向内的局部屈曲;lateralreinforcement侧向支承;confinement约束5.1.4ConcreteFilledTube(CFT)ColumnsDuetothebenefitofcompositeactionofthetwomaterials,theCFTcolumnsprovideexcellentseismiceventresistantstructuralpropertiessuchashighstrength,highductilityandlargeenergyabsorptioncapacity.Also,circularhollowsectionspossessmanyadvantagesoveropensections,includingaestheticappearanceandeconomyintermsofmaterialcosts.钢管混凝土柱抗震性能好ductility延性;aestheticappearance美观5.1.4ConcreteFilledTube(CFT)ColumnsDuetothecomplexityofconnectionsbetweensteelbeamsandcircularhollowsections,theiruseinstructuralsteelworkislimited.Thisisbecausetheuseofstandardboltingisnotfeasibleandcostlyunpopularweldedconnectionsarethenormalsolutions.Concrete-filledsteeltube(CFT)columnscombinetheadvantagesofductility,generallyassociatedwithsteelstructures,withthestiffnessofaconcretestructuralsystem.钢管混凝土柱同时具有钢结构和混凝土两种材料的优点,不过不能使用常规螺栓进行连接feasible可行的5.1.4ConcreteFilledTube(CFT)ColumnsInallkindsoffloors,concreteslabsoccupythedominantposition.Concreteslabscanbedividedintotwomajorcategories,thecast-in-placeslabandtheprecastslab.Thecast-in-placeslabhasgoodstructuralintegrity,however,itneedson-siteconcretepouringprocedure,largeconcretewetconstruction,instableconstructionquality,morescaffoldingandtemplates,highcostsandlongconstructionperiod.Theprecastslabisproducedinthefactoryandhasadvantagesoflessconcretewetconstruction,stableconstructionquality,lessscaffoldingandtemplates,lowconstructionnoise,reducibleengineeringcostandshortconstructionperiod.Butitsstructural
integrityneedstobeimproved.Therefore,compositeslabswhichcombinetheadvantagesofcast-in-placeslabsandprecastslabsbecomepopular.Itsbottompanelismanufacturedinfactoryandassembledonthespot.Thentheconcreteispouredinplacetoformthecompositeslab.Thisslabisprovidedwithadvantagesofgoodstructuralintegrity,lessscaffoldingandtemplates,shortconstructionperiod,goodeconomicefficiency,soithaspromisingdevelopmentprospects.组合楼板结合了现浇板和预制板优点dominantposition主导地位;category类别;on-siteconcretepouringprocedure现场混凝土浇筑;scaffolding脚手架;template模板;structuralintegrity结构完整性;bottompanel底板;spot现场5.2.1IntroductionThecompositeslabwithpre-stressedbottompanelisthemostwidelyusedcompositeslab.InChina,thepre-stressedthinslabwasproducedupto1957.In1970s,thepre-stressedcompositebeamandslabwasproducedwithcold-drawnlow-carbonsteelwires.In1980s,thestandarddrawingofpre-stressedcompositeslabswascompiled.Nowadays,thecompositeslabhasbeenwidelyusedinthehousingconstruction.Integratedprefabricatedhyperstaticstructureswithcompositecomponents,formedbypre-stressedcompositeslabsandpre-stressedhollowcompositebeams,havebeenappliedintallbuildings.组合板的发展cold-drawnlow-carbonsteelwires冷拔低碳钢丝;standarddrawing标准图册;compile编制;integratedprefabricatedhyperstaticstructures整体预制的超静定结构;pre-stressedhollowcompositebeams预应力空心组合梁5.2.2OverviewofPre-stressedConcreteCompositePlateThebottompanelofcompositeslabsmostlyemploysthefirst-tensionedpre-stressedpanel.Thebottompanelcanalsobeusedaspermanentformworks.Accordingtowhetherornotthebracesaresetunderbottompanels,thecompositeslabcanbesortedintoone-stageloadingcompositeslabandtwo-stageloadingcompositeslab.组合板分类first-tensionedpre-stressedpanel先张拉预应力板;permanentformworks永久性模板;one-stageloadingcompositeslab一阶段加载组合板;two-stageloadingcompositeslab两阶段加载组合板5.2.2OverviewofPre-stressedConcreteCompositePlateTheone-stageloadingcompositeslabhasslenderbottompanel,soitshouldbesupportedbytemporarybracesbeforethebottompanelsareassembled.Thepost-pouredconcretelayerandbottompanelbegintoworktogetherafterpost-pouredconcreteishardened.Theone-stageloadingcompositeslabissimilarwiththecast-in-placeslabinmechanicalbehavior.一阶段加载组合板的做法及特点temporarybraces临时支撑;bottompanels底板5.2.2OverviewofPre-stressedConcreteCompositePlateThebottompaneloftwo-stagecompositeslabhasenoughbendingstiffnessandneedsnotemporarybracesduringconstruction.Soconstructiondurationcanbeshortenedandtheprojectcostcanbereduced.Differentfromthecast-in-placeslab,thecross-sectiondimensionsandreinforcementsofthecompositeslabaredecidedbyconstructionstage,notbyservicestage.Beforethepost-pouredconcretelayerishardened,itbearsnoloads.Inthemeanwhile,thebottompanelitselfbearsitsdeadweight,post-pouredconcrete’sdeadweightandconstructionloads.Afterthepost-pouredconcretelayerishardened,itbeginstoworktogetherwithbottompaneltoformcompositeslab,whichbearsthedeadweightofpost-pouredconcretelayer,floorsurfaceandceilingandliveloadduringservicestage.两阶段加载组合板的做法及特点cross-sectiondimensions截面尺寸;reinforcement配筋5.2.2OverviewofPre-stressedConcreteCompositePlateThebottompanelpatterndeterminesthebondingbehaviorofthecompositeslabandtheedgejointdetailsinfluencesitscrackresistance.Theroughnessofbottompanelsurfacecanaffectthebondforceofcompositeslabs.Accordingtoroughness,thebottompanelcanbedividedintonaturalroughbottompanel,artificialroughbottompanelandshear-resistantreinforcedbottompanel.Accordingtocrosssection,thebottompanelcanbeclassifiedintoflatbottompanel,precastribbedbottompanel,hollowbottompanelandsandwichbottompanel.组合板根据底板粗糙程度和截面形状分类bottompanelpattern底板形状;bondingbehavior粘结性能;crackresistance抗裂性能5.2.3TheResearchandApplicationofPre-stressedCompositeSlabsComposite
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2024年度员工劳动合同的薪酬福利与晋升机制2篇
- 2024山林产权交易合同模板2篇
- 2024年度房地产买卖合同及附加服务协议3篇
- 2024年度民间抵押贷款合同示范文本(二零二四年度)3篇
- 2024年度知识产权保护联盟合同3篇
- 2024年房屋装修中介合作合同3篇
- 2024年度卫星遥感监测系统采购与安装合同3篇
- 2024年度智能穿戴设备销售与售后服务合同3篇
- 医学统计学知到智慧树章节测试课后答案2024年秋山东第一医科大学
- 中国民族民间舞蹈打击乐知到智慧树章节测试课后答案2024年秋四川音乐学院
- 围墙格栅施工方案
- 2023橡胶膜密封储气柜运行维护技术规程
- 桥梁加固维修施工组织设计
- 压力性损伤预防与处理流程
- DL/T 5225-2016 220kV~1000kV变电站通信设计规程
- 化工生产设备管理知识培训讲义
- 心电图报告模板
- 学习2023年《网络强国的重要思想》专题PPT
- 行驶证补办委托书
- 汽车租赁公司安全规章制度
- 产前超声检查技术诊断规范
评论
0/150
提交评论