土木工程專業(yè)英語論文

Researchofhigh-risebuildingfireprevention專業(yè)班級：學生姓名：學號：論文成績：評閱教師：體典型空間防火優(yōu)化設計研究正文：改革開放以來，我國市場經濟蓬勃發(fā)展，各種類型的商業(yè)建筑如雨后春筍般涌現。然雜流線、與城市多層面多點銜接等特點，極大程度地增大了災害風險，足部分現代商業(yè)綜合體迅速發(fā)展的設計需要，當因結構、功能、造型等效的性能化防火措施進行建筑和規(guī)劃設計。與此同時，性能化防火設計人員疏散模擬等方面的突出優(yōu)勢，也將被更多地運用于優(yōu)化“條文式”設計規(guī)范框架內的規(guī)劃與建筑方案設計。可見研究大型商業(yè)綜合體的性能化防火設計措防火設計方法，為建筑和城市減災防災目標的實現提供更有力的保障。Basedontheperformance-basedfireprotectiondesignmethodoftypicalcommercialcomplexspacefirepreventionoptimizationdesignresearchSincethereformandopening,ourcountrymarketeconomybooming,thevarioustypesofcommercialbuildingshavesprungup.Yetpeopleenjoyingthehighefficientandconvenientshoppingconsumptionandentertainmentatthesametime,commercialcomplexesandthelargescalecomplexcomplex,diversefunctions,thenumberofmany,streamline,andcitylevelmorecohesivecharacteristicsofdrasticallyincreasestheriskofdisasters,theespeciallyurbanandbuildingmostlikelytooccurinthemined-outarea,theriskoffire.Traditionalbuildingfireprotectiondesignbasedon"provision"codeforfireprotection,cannotmeetthedesignneedstobepartoftherapiddevelopmentofmoderncommercialcomplex,whenbecauseofthespecialrequirementsofstructure,function,shape,etc,inthecurrentnationalfiredidnotexplicitlystipulatedinthetechnicalspecificationandtheconditionsstipulatedinthecurrentnationalfireprotectionspecificationisnotapplicable,inaccordancewiththenationalfireprotectiontechnologyspecificationofdesigndifficulties,willtakeamoretargeted,moreadvanced,economic,reasonableandeffectiveperformance-basedfireprotectionmeasuresforconstructionandplanninganddesign.Atthesametime,theperformance-basedfireprotectiondesignmethodforitsinfirescenarioandevacuationsimulationandsoontheprominentadvantageof,willalsobemoreappliedtooptimizethe"provision"firepreventiondesignspecificationwithintheframeworkoftheplanningandarchitecturaldesign.Visiblestudymeasurestheperformance-basedfire-protectiondesignoflargecommercialcomplex,andbyusingthemethodofperformance-basedfireprotectiondesignofadjustingandoptimizingtheplanningandarchitecturaldesigninordertoavoidandreducethefirehazardisoneoftheimportantsubjectstobesolved.Thisthesisisdividedintotenchapters,respectivelyintroducedtheresearchbackgroundandsignificance,theresearchstatusofcommercialcomplex,theperformance-basedfireprotectionathomeandabroad,theelementsandfiredanger,buildingthefiremechanismandparametersoftheperformance-basedfire-protectiondesign,fivecommercialcomplextypicalfirepreventionmeasuresofthespace,finallyputforwardtheconclusionandprospect.Corecontentintheresearchofthispaperiscombinedwiththefeatureofcommercialspaceofcomplexelementsoffirecharacteristicsandthreeimportantindicatorsinthedesignofbuildingfireprotection(firepartition,traveldistance,evacuationwidth),refiningthefivekindsoftypicalspaceofcommercialcomplex,namelythelevelofintensivespaceandverticalspace,largeopenspace,narrowchannelspaceandundergroundspace,intheperspectiveofarchitectureandurbanplanning,ontheonehand,usingcomputertechnology,thedesignschemeof"superspecification"forsafetyevaluationoftheperformance-basedfire-protectiondesign,ontheotherhandtheprovisionstypespecificationwithintheframeworkofthedesignmethodofoptimization.Performance-basedfireprotectionstrategyforfireprotectiondesignandeventhroughoutthebuilding,thedesignideaoftheplanninganddesignprocess,preliminaryalreadyforourshowaprospectinthefieldofapplication,thisarticleaimstofurtherperfectanddevelopmentonthebasisofthedigitaltechnologymethodofperformance-basedfireprotectiondesignofbuildingsandurbandisasterreductiontoprovideamorepowerfulsafeguardtoachievethegoalofdisasterprevention.(二)DamageidentificationofreinforcedconcretestructuresafterfireandreinforcementFireexceptcausedagreatlosstohumanlifeandproperty,injuryanddamageonthebuildingstructureitselfisalsoveryserious.Especiallyinrecentyears,becauseofthehigh-risebuildings,largescaleandtheuseofcompound,thehappeningofbuildingfirewasgraduallyrisingtrend.Inallkindsofbuildingstructure,reinforcedconcretestructureholdsthelargestshare.Sofar,domesticandforeignresearchworkofthefireresistanceofconcretestructuralcomponentsislimited,thecomprehensiveidentificationandevaluationoffiredamagestructurealsoatgropingstage,ourcountry'satpresentthereisnoclearrulesorregulationstofollow,alsocannotadapttotheneedsofthedevelopmentofengineeringconstruction.Therefore,thedetectionandidentificationofstructuredamageafterfireandrepairdesignschemeoptimizationresearchbothathomeandabroadcausedtheenoughattention,in-depthstudyofitstheoryandpracticeisofgreatsocialsignificanceandeconomicbenefits.Thisarticlecollectsandanalysestheexistingfireliteraturesaboutreinforcedconcretestructureathomeandabroad,combinedwithengineeringpracticeexperienceandspecificengineeringexample,thematerialmechanicsperformanceofreinforcedconcretestructuresafterfireandthechangeofcomponentbearingcapacity,damagedetectionandidentificationmethodofthestructureandstructurereinforcementcalculationanddesignsystemisanalyzedandsummarized.Onthisbasis,thekeyofreinforcedconcretestructuresafterfiredetectionmethod,thedamageddegreeofcomprehensiveappraisalstandardandreinforcementdesignschemearestudiedanddiscussed,andputsforwardsomeeffectivemethodsandSuggestions,forthefutureofbuildingfireactualengineeringresearchandprovidesomereferencesforrepairreinforcementdesign.Thispaperfromtheanalysisoffireresistanceofreinforcedconcretematerialsandcomponents,summedupthesteelandconcretematerialsinhightemperaturemechanicalpropertiesundertheactionoffire,furtherexpoundsthefireresistanceandbearingcapacityofreinforcedconcretestructures.Buildingfiretemperaturedeterminationisacomplexwork,thispaperanalyzesthemethodstodeterminethefiretemperature.Thensystematicallysummarizesthedetectionmethodsofmaterialsandthedamagedstructureafterfire,andanalyzestheirrespectiveadvantagesanddisadvantagesandapplicablescope.Andsummeduptheconcretestructureandcomponentsoffiredamagelevelandevaluationcriteria,fortheactualfireengineeringdetectionandidentificationofthedamagedstructureandrepairreinforcementapplication.Thisarticlealsoprobesintotheconcretememberafterthefireremainingbearingcapacitycalculation,thecommonreinforcementmethodsandreinforcementoftheconcretestructurecalculationtheoryandreinforcementdesign.Finally,thispaperapplytheabovetheoryresearchspecifictofireengineeringinstance.Inengineeringexamples,thispaperdeeplystudiedthefollowingcontent:(1)inviewoftheconcretestructureafterfiredamageavarietyofdetectionmethodisappliedtoconductsitetest;(2)comprehensivefiresceneinvestigationandtestresultshowsthedamageidentificationandbearingcapacityoftheproject,allkindsofthedamagedstructurereliabilityconclusions;(3)takethetypicaldamagedconcretemembers,suchas:framebeamsandcolumnsastheresearchobject,analyzedthefiredamagephenomenonandfireresistance,givessomeverificationconclusion;(4)accordingtotheappraisalresult,advancessomeSuggestionsonthep