《鋼結(jié)構(gòu)安裝》課件-6.3 鋼結(jié)構(gòu)智能測(cè)量技術(shù)

鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure全站儀Totalstation數(shù)字?jǐn)z影測(cè)量Digitalphotogrammetry三維激光掃描儀Three-dimensionallaserscanner北斗衛(wèi)星定位系統(tǒng)Beidousatellitepositioningsystem多源信息融合Multi-sourceinformationfusion物聯(lián)網(wǎng)Internetofthings電子水準(zhǔn)儀ElectroniclevelGPS全球定位系統(tǒng)GPSGlobalpositioningsystem無線數(shù)據(jù)傳輸Wirelessdatatransmission鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure三維激光掃描儀Three-dimensionallaserscanner鋼結(jié)構(gòu)智能測(cè)量技術(shù)IntelligentmeasurementtechnologyofsteelstructureGPS測(cè)量技術(shù)GPSmeasurementtechnology超高層測(cè)量機(jī)器人應(yīng)用Superhighlevelmeasurementrobotapplication鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure技術(shù)內(nèi)容Technicalcontent高精度三維測(cè)量控制網(wǎng)布設(shè)技術(shù)Highprecisionthreedimensionalmeasurementcontrolnetworklayouttechnology01鋼結(jié)構(gòu)地面拼裝智能測(cè)量技術(shù)Intelligentmeasurementtechnologyforfloorassemblyofsteelstructure02鋼結(jié)構(gòu)精準(zhǔn)空中智能化快速定位技術(shù)Precisionairintelligentfastpositioningtechnologyofsteelstructure03基于三維激光掃描的高精度鋼結(jié)構(gòu)質(zhì)量檢測(cè)及變形監(jiān)測(cè)技術(shù)Highprecisionsteelstructurequalityinspectionanddeformationmonitoringtechnologybasedon3Dlaserscanning04基于數(shù)字近景攝影測(cè)量的高精度鋼結(jié)構(gòu)性能檢測(cè)及變形監(jiān)測(cè)技術(shù)Highprecisionsteelstructureperformancedetectionanddeformationmonitoringtechnologybasedondigitalclose-rangephotogrammetry05基于物聯(lián)網(wǎng)和無線傳輸?shù)淖冃伪O(jiān)測(cè)技術(shù)DeformationmonitoringtechnologybasedonInternetofThingsandwirelesstransmission06鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure技術(shù)指標(biāo)Technicalindex高精度三維控制網(wǎng)技術(shù)指標(biāo)Highprecision3Dcontrolnetworktechnicalspecifications1鋼結(jié)構(gòu)拼裝空間定位技術(shù)指標(biāo)Technicalindexofsteelstructureassemblyspacepositioning2鋼結(jié)構(gòu)變形監(jiān)測(cè)技術(shù)指標(biāo)Technicalindexofsteelstructuredeformationmonitoring3鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure工程案例Engineeringcase主要鋼結(jié)構(gòu)部分Themainsteelstructurepart主入口鋼結(jié)構(gòu)Mainentrancesteelstructure后入口鋼結(jié)構(gòu)Rearentrancesteelconstruction鋼聯(lián)橋部分鋼結(jié)構(gòu)Steelbridgepartsteelstructure三亞國(guó)際免稅城SanyaInternationalDutyFreeCity鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure工程案例Engineeringcase鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure工程案例Engineeringcase測(cè)量平面控制網(wǎng)Measuringplanecontrolnetwork鋼箱拱測(cè)量控制點(diǎn)Steelboxarchmeasurementcontrolpoint鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure鋼桁架地面拼裝過程的測(cè)量Measurementofsteeltrussfloorassemblyprocess拼裝胎架預(yù)埋件的定位測(cè)量Positioningmeasurementofembeddedpartsofassembledtireframe構(gòu)件在地面上的投影線的放樣Theloftingofprojectionlinesofmembersontheground構(gòu)件拼裝過程中及完成后的校正測(cè)量Calibrationmeasurementduringandaftercomponentassembly鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure胎架定位測(cè)量時(shí)，根據(jù)胎架預(yù)埋件的設(shè)計(jì)位置Whenmeasuringthepositioningofthetireframe，accordingtothedesignpositionoftheembeddedpartsofthetireframe在圖紙上根據(jù)已有平面控制點(diǎn)的位置計(jì)算出胎架預(yù)埋板中心點(diǎn)的相對(duì)坐標(biāo)Onthedrawing,accordingtothepositionoftheexistingplanecontrolpoints,therelativecoordinatesofthecenterpointoftheembeddedplateofthetireframearecalculated1利用全站儀測(cè)設(shè)出該點(diǎn)位置Thepositionofthepointwasmeasuredbythetotalstation2鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure依次將桁架弦桿、腹桿吊上胎架，按平面及高程控制點(diǎn)用智能全站儀進(jìn)行精確定位。Thestringrodandbellyrodofthetrusswerehoistedtothetireframeinturn,andtheintelligenttotalstationwasusedtoaccuratelylocatetheplaneandelevationcontrolpoints.定位時(shí)以地面上的投影線為基準(zhǔn)進(jìn)行檢查，并注意節(jié)點(diǎn)間的組裝間隙，測(cè)量合格后進(jìn)行臨時(shí)固定。Duringpositioning,checktheprojectionlineonthegroundasthereference,payattentiontotheassemblygapbetweennodes,andfixtemporarilyafterpassingthemeasurement.工程案例Engineeringcase三亞國(guó)際免稅城SanyaInternationalDutyFreeCity鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure桁架所有桿件都拼裝定位后，進(jìn)行整體和節(jié)點(diǎn)測(cè)量，保證其桿件拼裝位置在允許偏差范圍內(nèi)，如有部分桿件超標(biāo)，應(yīng)進(jìn)行校正與修正。Afterallthetrussrodsareassembledandpositioned,thewholeandjointmeasurementsarecarriedouttoensurethattheassemblypositionsoftherodsarewithintheallowabledeviationrange.Ifsomerodsexceedthestandard,theyshouldbecorrectedandcorrected.工程案例Engineeringcase三亞國(guó)際免稅城SanyaInternationalDutyFreeCity鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure節(jié)點(diǎn)定位平、立面圖Nodepositioninghorizontalandelevationdrawings依據(jù)basis過程process鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology鋼結(jié)構(gòu)深化設(shè)計(jì)Steelstructuredeepeningdesign設(shè)計(jì)院的施工圖Theconstructiondrawingofthedesigninstitute計(jì)算書Statementofcalculation其它相關(guān)資料Otherrelevantinformation專業(yè)深化設(shè)計(jì)軟件平臺(tái)Professionaldeepeningdesignsoftwareplatform建立三維實(shí)體模型Buildathree-dimensionalsolidmodel計(jì)算節(jié)點(diǎn)坐標(biāo)定位調(diào)整值Calculatetheadjustedvalueofnodecoordinatepositioning生成結(jié)構(gòu)安裝布置圖Generatethestructureinstallationlayout生成零構(gòu)件圖Generateazero-componentdiagram生成報(bào)表清單Generatereportlist鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology鋼結(jié)構(gòu)深化設(shè)計(jì)三維建模Threedimensionalmodelingofsteelstructuredeepeningdesign傳統(tǒng)的“放樣出圖”Traditional"loftingplan"施工全過程Wholeconstructionprocess延伸extend信息傳感設(shè)備Informationsensingequipment網(wǎng)絡(luò)技術(shù)Networktechnology鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology物聯(lián)網(wǎng)技術(shù)Internetofthingstechnology射頻識(shí)別(RFID)Radiofrequencyidentification紅外感應(yīng)器Infraredsensor物品與互聯(lián)網(wǎng)相連接ObjectsareconnectedtotheInternet信息交換和通訊Informationexchangeandcommunication實(shí)現(xiàn)智能化識(shí)別、定位、追蹤、監(jiān)控和管理Realizeintelligentidentification,positioning,tracking,monitoringandmanagement提高施工效率、產(chǎn)品質(zhì)量和企業(yè)創(chuàng)新能力。Improveconstructionefficiency,productqualityandenterpriseinnovationability人員、材料、機(jī)器、產(chǎn)品等與施工管理、決策建立更為密切的關(guān)系。Personnel,materials,machinery,productsandconstructionmanagement,decisiontoestablishacloserrelationship.進(jìn)一步將信息與BIM模型進(jìn)行關(guān)聯(lián)。FurthercorrelatetheinformationwiththeBIMmodel.改善施工數(shù)據(jù)的采集、傳遞、存儲(chǔ)、分析、使用等環(huán)節(jié)。Improveconstructiondatacollection,transmission,storage,analysis,useandotherlinks.提升產(chǎn)品制造和企業(yè)管理的信息化管理水平。Improvethelevelofinformationmanagementinproductmanufacturingandenterprisemanagement.鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology深化設(shè)計(jì)階段Furtherdesignphase統(tǒng)一軟件平臺(tái)Unifiedsoftwareplatform01人員協(xié)同管理Personnelcooperativemanagement02軟件基礎(chǔ)數(shù)據(jù)配置Configurebasicsoftwaredata03模型構(gòu)件唯一性Modelcomponentuniqueness04零件的截面類型匹配Thesectiontypeofthepartsmatches05模型材質(zhì)匹配Modelmaterialmatching06鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology搭建必要的網(wǎng)絡(luò)、硬件環(huán)境Buildthenecessarynetworkandhardwareenvironment實(shí)現(xiàn)數(shù)控設(shè)備的聯(lián)網(wǎng)管理RealizethenetworkmanagementofCNCequipment監(jiān)控設(shè)備運(yùn)轉(zhuǎn)情況Monitortheoperationofequipment提高設(shè)備管理的工作效率和質(zhì)量Improvetheefficiencyandqualityofequipmentmanagement鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology物聯(lián)網(wǎng)技術(shù)收集的信息與BIM模型進(jìn)行關(guān)聯(lián)TheinformationcollectedbytheInternetofThingstechnologyiscorrelatedwiththeBIMmodel從BIM模型中獲取、更新與本崗位相關(guān)的信息ObtainandupdateinformationrelatedtothepositionfromBIMmodel指導(dǎo)實(shí)際工作Guidepracticalwork將相應(yīng)工作的成果更新到BIM模型中UpdatetheresultsofthecorrespondingworkintotheBIMmodel對(duì)鋼結(jié)構(gòu)施工信息做出正確理解和高效共享Correctunderstandingandefficientsharingofsteelstructureconstructioninformation鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology打造扎實(shí)、可靠、全面、可行的物聯(lián)網(wǎng)協(xié)同管理軟件平臺(tái)Tobuildasolid,reliable,comprehensiveandfeasiblesoftwareplatformforcollaborativemanagementoftheInternetofThings施工數(shù)據(jù)的采集、傳遞、存儲(chǔ)、分析使用等環(huán)節(jié)進(jìn)行規(guī)范化管理Thecollection,transfer,storage,analysisanduseofconstructiondataarestandardizedmanagement進(jìn)一步挖掘數(shù)據(jù)價(jià)值Furtherexplorethevalueofdata服務(wù)企業(yè)運(yùn)營(yíng)Serviceenterpriseoperation鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology技術(shù)指標(biāo)Technicalindex按照深化設(shè)計(jì)標(biāo)準(zhǔn)、要求等統(tǒng)一產(chǎn)品編碼。Inaccordancewiththedeepeningdesignstandards,requirementsandotherunifiedproductcoding.01按照企業(yè)自身管理規(guī)章等要求統(tǒng)一施工要素編碼。Inaccordancewiththeenterprise'sownmanagementregulationsandotherrequirementsofunifiedconstructionelementscode.02提高數(shù)字化施工水平。Improvethedigitalconstructionlevel.03充分利用工業(yè)以太網(wǎng)，進(jìn)行產(chǎn)品全生命期管理。MakefulluseofindustrialEthernettomanageproductlifecycle.04搭建自動(dòng)化、柔性化、智能化的生產(chǎn)線，實(shí)現(xiàn)信息互聯(lián)互通和有效集成。Buildautomatic,flexibleandintelligentproductionlinestorealizeinformationinterconnectionandeffectiveintegration.05基于物聯(lián)網(wǎng)技術(shù)的應(yīng)用。ApplicationbasedonInternetofThingstechnology.06鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology工程案例Engineeringcase在項(xiàng)目鋼結(jié)構(gòu)施工過程中，深化設(shè)計(jì)階段，按照施工單位的企業(yè)標(biāo)準(zhǔn)《鋼結(jié)構(gòu)深化設(shè)計(jì)三維建模標(biāo)準(zhǔn)》、《鋼結(jié)構(gòu)深化設(shè)計(jì)圖紙繪制標(biāo)準(zhǔn)》等，進(jìn)行標(biāo)準(zhǔn)化建模，統(tǒng)一了零構(gòu)件的命名，提供了可追溯的產(chǎn)品編碼。Inthesteelstructureconstructionprocessoftheproject,inthedeepeningdesignstage,standardizedmodelingiscarriedoutaccordingtotheenterprisestandardsoftheconstructionunit,suchasThree-dimensionalModelingStandardfortheDeepeningDesignofSteelStructureandDrawingStandardfortheDeepeningDesignofSteelStructure,etc.,whichunifythenamingofzerocomponentsandprovidetraceableproductcodes.武漢中心項(xiàng)目Wuhancenterproject鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology材料管理階段MaterialmanagementstageMaterialmanagementstageMaterialinformationbindingInformationreading"Receive,send,save,receive,use,return"businessprocess鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology生產(chǎn)施工階段ProductionandconstructionphasepartscomponentmaterialCodingsystempersonnelWorkingprocedureequipment鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology物聯(lián)網(wǎng)技術(shù)采集施工信息TheInternetofThingstechnologycollectsconstructioninformation企業(yè)資源計(jì)劃管理系統(tǒng)（ERP）Enterpriseresourceplanningmanagementsystem制造執(zhí)行系統(tǒng)（MES）Manufacturingexecutionsystem供應(yīng)鏈管理系統(tǒng)（SCM）Supplychainmanagementsystem客戶管理系統(tǒng)（CRM）Customermanagementsystem倉(cāng)儲(chǔ)管理系統(tǒng)（WMS）Warehousemanagementsystem經(jīng)through提高improve項(xiàng)目管控水平Projectcontrollevel優(yōu)點(diǎn)advantage結(jié)構(gòu)形式Structuralform鋼結(jié)構(gòu)新技術(shù)Newtechnologyofsteelstructure課程回顧C(jī)oursereview輕質(zhì)高強(qiáng)Lightweighthighstrength良好的塑性韌性Goodplastictoughness均勻的材質(zhì)Uniformmaterial工業(yè)化程度高Highdegreeofindustrialization空間利用率高Highspaceutilizationrate造型多樣Diverseshapes國(guó)內(nèi)、國(guó)際大跨度、大空間、超高層、體型復(fù)雜的主要結(jié)構(gòu)形式Themainstructureformoflargespan,largespace,supertallandcomplexshapeisdomesticandinternational鋼結(jié)構(gòu)新技術(shù)Newtechnologyofsteelstructure課程回顧C(jī)oursereview高性能鋼材Highperformancesteel新施工方法Newconstructionmethod新焊接工藝Newweldingprocess三維掃描技術(shù)Three-dimensionalscanningtechniqueBIM技術(shù)應(yīng)用BIMtechnologyapplication高性能鋼材應(yīng)用技術(shù)Highperformancesteelapplicationtechnology鋼結(jié)構(gòu)深化設(shè)計(jì)與物聯(lián)網(wǎng)應(yīng)用技術(shù)SteelstructuredeepeningdesignandInternetofThingsapplicationtechnology鋼結(jié)構(gòu)智能測(cè)量技術(shù)Intelligentmeasurementtechnologyofsteelstructure鋼結(jié)構(gòu)虛擬預(yù)拼裝技術(shù)Virtualpreassemblytechnologyofsteelstructure鋼結(jié)構(gòu)高效焊接技術(shù)Highefficiencyweldingtechnologyofsteelstructure鋼結(jié)構(gòu)滑移、頂（提）升施工技術(shù)Constructiontechnologyofsteelstructureslidingandlifting鋼結(jié)構(gòu)防火防腐技術(shù)Firepreventionandanticorrosiontechnologyofsteelstructure鋼與混凝土組合結(jié)構(gòu)應(yīng)用技術(shù)Applicationtechnologyofsteelandconcretecompositestructure索結(jié)構(gòu)應(yīng)用技術(shù)Cablestructureapplicationtechnology鋼結(jié)構(gòu)住宅應(yīng)用技術(shù)Steelstructureresidentialapplicationtechnology鋼結(jié)構(gòu)新技術(shù)Newtechnologyofsteelstructure高性能鋼材應(yīng)用技術(shù)Highperformancesteelapplicationtechnology震害調(diào)查Earthquakedamageinvestigation鋼結(jié)構(gòu)的抗震性能Seismicbehaviorofsteelstructures鋼筋混凝土結(jié)構(gòu)Reinforcedconcretestructure優(yōu)于Superiorto鋼結(jié)構(gòu)的脆性斷裂是易發(fā)生的現(xiàn)象。Brittlefractureofsteelstructureisaneasyphenomenon.鋼材的性能是影響結(jié)構(gòu)抗震性能的主要因素。Theperformanceofsteelisthemainfactoraffectingtheseismicperformanceofstructure.高性能鋼材應(yīng)用技術(shù)Highperformancesteelapplicationtechnology高性能建筑結(jié)構(gòu)鋼材的使用Theuseofhighperformancebuildingstructuralsteel控制鋼材屈服強(qiáng)度Controltheyieldstrengthofsteel使用較低的屈強(qiáng)比Usealowyieldratio較高韌性的鋼材Hightoughnesssteel良好可焊性的鋼材Goodweldabilityofsteel改善鋼材性能Improvesteelperformance結(jié)構(gòu)抗震性能Seismicperformanceofstructure提高improve高性能鋼材應(yīng)用技術(shù)Highperformancesteelapplicationtechnology建筑鋼結(jié)構(gòu)抗震設(shè)計(jì)規(guī)定Codeforseismicdesignofsteelstructuresinbuildings鋼材的屈服強(qiáng)度實(shí)測(cè)值與抗拉強(qiáng)度實(shí)測(cè)值不應(yīng)大于0.85；Themeasuredyieldstrengthandtensilestrengthofsteelshouldnotbegreaterthan0.85;鋼材應(yīng)有明顯的屈服臺(tái)階；Steelshouldhaveobviousyieldsteps伸長(zhǎng)率應(yīng)大于20%；Elongationshouldbegreaterthan20%;鋼材要具有良好的可焊性和沖擊韌性。Thesteelshouldhavegoodweldabilityandimpacttoughness.高性能鋼材應(yīng)用技術(shù)HighperformancesteelapplicationtechnologyGB/T4171，有Q415NH、Q460NH、Q500NH、Q550NH屬于高強(qiáng)鋼范圍；GB/T4171,Q415NH,Q460NH,Q500NH,Q550NHbelongtotherangeofhighstrengthsteel;《耐候結(jié)構(gòu)鋼》“WeatherresistantStructuralSteel”GB/T714有九個(gè)牌號(hào)，其中Q420q、Q460q、Q500q、Q550q、Q620q、Q690q屬高強(qiáng)鋼范圍；GB/T714hasninegrades,amongwhichQ420q,Q460q,Q500q,Q550q,Q620q,Q690qbelongtotherangeofhighstrengthsteel;《橋梁用結(jié)構(gòu)鋼》“StructuralSteelforBridges”GB/T19879有Q390GJ、Q420GJ、Q460GJ三個(gè)牌號(hào)屬于高強(qiáng)鋼范圍；GB/T19879hasQ390GJ,Q420GJ,Q460GJthreegradesbelongtotherangeofhighstrengthsteel;《建筑結(jié)構(gòu)用鋼》“SteelforBuildingStructures”GB/T1591中規(guī)定八個(gè)牌號(hào)，其中Q390、Q420、Q460、Q500、Q550、Q620、Q690屬高強(qiáng)鋼范圍；EightgradesarestipulatedinGB/T1591,amongwhichQ390,Q420,Q460,Q500,Q550,Q620,Q690belongtotherangeofhighstrengthsteel;《低合金高強(qiáng)度結(jié)構(gòu)鋼》“LowalloyHighStrengthStructuralSteel”GB/T28905，有LY100、LY160、LY225屬于低屈服強(qiáng)度鋼范圍。GB/T28905,LY100,LY160,LY225belongtothelowyieldstrengthsteelrange.《建筑用低屈服強(qiáng)度鋼板》“LowyieldStrengthSteelPlateforConstruction”高性能鋼材應(yīng)用技術(shù)Highperformancesteelapplicationtechnology技術(shù)內(nèi)容Technicalcontent為了提高結(jié)構(gòu)的抗震性，要求鋼材具有高的塑性變形能力。Inordertoimprovetheseismicresistanceofthestructure,thesteelisrequiredtohavehighplasticdeformationcapacity.低屈服點(diǎn)鋼材（屈服強(qiáng)度ReL=100~225Mpa）。Lowyieldpointsteel(yieldstrengthReL=100~225Mpa).高性能鋼材應(yīng)用技術(shù)Highperformancesteelapplicationtechnology建筑結(jié)構(gòu)用高強(qiáng)鋼的特點(diǎn)Characteristicsofhighstrengthsteelusedinbuildingstructure低碳Lowcarbon細(xì)晶粒Finegrain