現(xiàn)澆鋼筋砼構(gòu)件裂縫的分析與處理(the analysis and treatment of the cracks in the concrete parts of the reinforced concrete)

現(xiàn)澆鋼筋砼構(gòu)件裂縫的分析與處理(the analysis and treatment of the cracks in the concrete parts of the reinforced concrete)

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時間:2018-08-08

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1、現(xiàn)澆鋼筋砼構(gòu)件裂縫的分析與處理(Theanalysisandtreatmentofthecracksintheconcretepartsofthereinforcedconcrete)Wuhancodaconstructionengineeringsupervisionco.,LTDAtpresent,China'smiddleandhigh-risebuildingsadoptreinforcedconcreteframeorreinforcedconcrete"frame-oneshearwallstructure",becauseofthesettingDamage

2、intheconstructionofdefectsandlong-termuse,resultinginawallorfloorknife:crack,creatingadifferentdegreeofcrack.Thesecracks,ifnothandledintime,willinevitablyaffecttheuseofbuildingsandevenstructuralsafety.Inordertoimprovethequalityofengineering,thispapercomprehensivelyanalyzedthecracktype,the

3、causesofthegenerationandthemeasurestopreventcracks.Itishopedthatbysummarizingtheanalysis,itwillimprovethequalitymanagementleveloftheconstructiontechnologyandqualitymanagement.1.Maincharacteristicsoffractureofreinforcedconcretemembers:Duetothemoretypesofreinforcedconcretemembers,thereasons

4、forthecracksofvariouscomponentsaredifferent.InordertomakethesummaryreachacertaindepthInthispaper,onlytwokindsofcomponentsofreinforcedconcretewallandfloorslabareanalyzed.1.1maincharacteristicsofcracksinreinforcedconcretewalls:(1)mostofthemareverticalfractures.Mostofthecracksareclosetothewa

5、ll,andtheendsgraduallybecomethinanddisappear.(2)thenumberofcracksismoreandthewidthisgenerallysmall,withafewmorethan0.3mm,andmostofthecracksarenotmorethan0.2mm.(3)therearemorecracksinthecracks,andsomearerelatedtothesuddendropintemperature;(4)asthetimefracturecontinuestodevelop,thequantityi

6、ncreases,butthegapwidthincreasesnotmuch;(5)thebasementwallhaslesscracknearthelongendandmoreinthemiddleandnear.Leakageofcommoncracksinthebasementafterbackfill,buttheamountofwaterisgenerallysmall.1.2maincharacteristicsofcracksinconcretefloorslab:(1)thecracksaregenerallyshorter,notmorethanon

7、emeterlong,mostlybetween300and600mm.(2)therearemanycracks,andthewidthisabout0.5-3mm.(3)thedepthofthecrackisdifferent,andsomeofthemarethroughthethicknessofthefloor,some3-100mm;(4)thecrackdistributionisusuallyintheboxsurroundedbythesecondarygirder,somealongthedistribu

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