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1、鋼結(jié)構(gòu)的防火涂料分析摘要:鋼結(jié)構(gòu)的容重雖然較大,單與其它建筑材料相比,它的強(qiáng)度卻高很多,因而當(dāng)承受的荷載和條件相同時(shí),鋼結(jié)構(gòu)要比其它結(jié)構(gòu)輕,便于運(yùn)輸和安裝,并可跨越更大的跨度。塑性好,使鋼結(jié)構(gòu)一般不會因?yàn)榕既怀d或局部超載而突然斷裂破壞。韌性好,則使鋼結(jié)構(gòu)對動力荷載的適應(yīng)性較強(qiáng)。鋼材的內(nèi)部組織比較均勻,非常接近勻質(zhì)和各向同性體,在一定的應(yīng)力幅度內(nèi)幾乎是完全彈性的。鋼結(jié)構(gòu)制造簡便,易于采用工業(yè)化牛產(chǎn),施工安裝周期短,鋼結(jié)構(gòu)由各種型材組成,制作簡便。大量的鋼結(jié)構(gòu)都在專業(yè)化的金展結(jié)構(gòu)制造廠中制造;精確度高。制成的構(gòu)件運(yùn)到現(xiàn)場拼裝,采用螺栓連接,U結(jié)構(gòu)輕,故施工方便,施工周期短。鋼材耐熱而不耐高
2、溫,隨著溫度的升高,強(qiáng)度就降低。當(dāng)周圍存在著輻射熱,溫度在150度以上吋,就應(yīng)采取遮擋措施。如果一旦發(fā)生火災(zāi),結(jié)構(gòu)溫度達(dá)到500度以上時(shí),就可能全部瞬時(shí)崩潰。為了提高鋼結(jié)構(gòu)的耐火等級,因此,對鋼結(jié)構(gòu)必須采取防火保護(hù)措施。ThefireprotectionofsteeIstructurecoatinganalysis[Abstract]:Steelstructureofbulkdensitywhilethelarger,singlecomparedwithotherconstructionmaterials,itsstrengthismuchhigher,sowhentheloadandu
3、nderthesameconditions,thesteelstructurethanotherlightstructure,convenienttransportationandinstallation,andcanspanlargespan.Plastic,sothatthesteelstructureisgenerallynotbecauseofaccidentaloverloadorlocaloverloadandrupturefailure?Goodtoughness,makesteelstructureadaptabilitytodynamicloadsisstrong.St
4、eelinternalorganizationisrelativelyuniform,veryclosetohomogeneousandisotropicbodyatacertainstressrangeisalmostperfectlyelastic?Manufactureofsteelstructureissimple,easytouseindustrialproduction,constructionandinstallationperiodisshort,thesteelstructureiscomposedofvariousshapesofsimpleproduction.Nu
5、meroussteelstructurearefabricatedinthemanufactureofmetalstructureofprofessionalfactory;highaccuracy?Madeofcomponentsshippedtothesiteassembly,connectedbybolts,andthestructureislight,theconstructionisconvenient,shortconstructionperiod.Steelheatinsteadofhightemperature,withtheincreaseoftemperature,i
6、ntensityisreduced.Whenthesurroundingtheexistenceofradiantheat,thetemperatureat150degrees,itshouldtakeshieldingmeasures?Iftheeventoffire,thestructureofthetemperaturereached500degrees,mayalltheinstantaneouscollapse?Inordertoimprovethefireresistancerating,steelstructuretherefore,takefireprotectionme
7、asuresofsteelstructuremustbe.[Keyword]FireretardantcoatingforsteelstructureCoatingAdhesivestrengthFireresistantmechanism摘要2一、引言5二、鋼結(jié)構(gòu)防火涂料簡介分析52.1鋼結(jié)構(gòu)防火涂料的背景52?2鋼結(jié)構(gòu)防火涂料的特點(diǎn)52?3鋼結(jié)構(gòu)防火涂料的作用52.4國內(nèi)外鋼結(jié)構(gòu)防火涂料的發(fā)展6三、鋼結(jié)構(gòu)以及防火涂料63.1常見