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Concretestructurereinforcementdesign
SheyanboⅠWangchenjiaⅡ
ⅠFoundationEngineeringCo。,Ltd。HeilongjiangDongyu
ⅡHeilongjiangProvince,EastBuildingFoundationEngineeringCo。,Ltd。Coal
Abstract:structureinthelong—termnaturalenvironmentandundertheu
environment’sfunction,itsfunctionisweakeninevitablygradually,ourstructural
engineering’sdutynotjustmustfinishthebuildingearlierperiodtheprojectwork,
butmustbeablethescienceappraisalstructuredamageobjectivelawandthedegree,
andadoptstheeffectivemethodguaranteestructurethecurityu,thatthe
yforeewillbethe
21stcentury,thehumanbuildingalsobytheconcretestructure,thesteelstructure,
thebricking—upstructureandsoonprimarily,theprentstageIwillthinkusinthe
structurereinforcementthisaspectrearchshouldalsotakethisasthemain
breakthroughdirection.
Keyword:Concretestructurereinforcementbricking—upstructurereinforcement
steelstructurereinforcement
1Concretestructurereinforcement
Concretestructure’sreinforcementdividesintothedirectreinforcementand
reinforcestwokindsindirectly,whenthedesignmayactaccordingtotheactual
conditionandtheoperationrequirementschoicebeingsuitablemethodandthe
necessarytechnology.
1.1thedirectreinforcement’sgeneralmethod
1)Enlargesthectionreinforcementlaw
Addstheconcretescast—in—placelevelinthereinforcedconcretememberin
bendingcompressionzone,mayincreathectioneffectiveheight,theexpansion
crossctionalarea,thunhancesthecomponentrightctionanti—curved,the
obliquectionanti-cutsabilityandthectionrigidity,playsthereinforcement
reinforcementtherole.
Inthesuitablemusclescope,theconcreteschangecurvedthecomponentright
ctionsupportingcapacityincreaalongwiththeareaofreinforcementandthe
intensityenhance。Intheoriginalcomponentrightctionratioofreinforcementnot
toohighsituation,increasthemainreinforcementareatobepossibletopropothe
plateaucomponentrightctionanti—curvedsupportingcapacityeffectively。Is
pulledinthectiontheareatoaddthecast—in-placeconcretejackettoincreathe
componentction,throughnewCanadapartialandoriginalcomponentjointwork,
butenhancesthecomponentsupportingcapacityeffectively,improvementnormal
operationalperformance.
Enlargesthectionreinforcementlawconstructioncraftsimply,compatible,
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andhasthematuredesignandtheconstructionexperience;IssuitableinLiang,the
board,thecolumn,thewallandthegeneralstructureconcretesreinforcement;But
sceneconstruction’swetoperatingtimeislong,toproduceshascertaininfluence
withthelife,andafterreinforcingthebuildingclearancehascertainreduction。
2)Replacementconcretesreinforcementlaw
Thislaw’smeritwithenlargesthemethodofctionstobeclo,andafter
reinforcing,doesnotaffectbuilding’sclearance,butsimilarexistenceconstruction
wetoperatingtimelongshortcoming;Issuitablesomewhatloworhasconcretes
carrier’sandsoonriousdefectLiang,columninthecompressionzoneconcretes
intensityreinforcement。
3)thecakingoutsourcingctionreinforcementlaw
OutsidetheBaotouSteelFactoryreinforcementiswrapsinthectionorthe
steelplateisreinforcedcomponent'soutside,outsidetheBaotouSteelFactory
reinforcesreinforcedconcreteLiangtouthewetoutsourcinglawgenerally,
namelyustheepoxyresinificationtobeinthemilkandsoonmethodswithto
reinforcethectiontheconstructioncommissiontocakeawhole,afterthe
reinforcementcomponent,becauispulledwiththecompresdsteelcross
ctionalarealargescaleenhancement,thereforerightctionsupportingcapacity
andctionrigiditylargescaleenhancement。
ThislawalsosaidthatthewetoutsideBaotouSteelFactoryreinforcementlaw,
thestressisreliable,theconstructionissimple,thesceneworkloadissmall,butis
bigwiththesteelquantity,andusinabovenotsuitably600Cinthe
non—protection’ssituationthehightemperatureplace;Issuitabledoesnotallowin
theuobviouslytoincreatheoriginalcomponentctionsize,butrequeststo
sharpenitsbearingcapacitylargescaletheconcretestructurereinforcement。
4)Sticksthesteelreinforcementlaw
Outsidethereinforcedconcretememberinbendingsticksthesteelreinforcement
is(rightctionispulledinthecomponentsupportingcapacityinsufficientctor
area,rightctioncompressionzoneorobliquection)thesuperficialgluesteel
plate,likethismayenhanceisreinforcedcomponent’ssupportingcapacity,and
constructsconveniently.
Thislawconstructionisfast,thescenenotwetworkoronlyhastheplastering
andsoonfewwetworks,toproducesissmallwiththelifeinfluence,andafter
reinforcing,isnotremarkabletotheoriginalstructureoutwardappearanceandthe
originalclearanceaffects,butthereinforcementeffectisdecidedtoagreatextentby
thegummycraftandtheoperationallevel;Issuitableinthewithstandingstatic
function,andisinthenormalhumidityenvironmenttobendorthetensionmember
reinforcement.
5)Gluefibrereinforcementplasticreinforcementlaw
Outsidepastesthetextilefiberreinforcementispasteswiththecementing
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materialthefibrereinforcementcompoundmaterialsinisreinforcedthecomponent
topulltheregion,causitwithtoreinforcethectionjointwork,achieves
sharpensthecomponentbearingcapacitythegoal。Besideshasgluesthesteelplate
similarmerit,butalsohasanticorrosivemuddy,bearsmoistly,doesnotincrea
thelf—weightofstructurenearly,durably,themaintenancecostlowstatusmerit,
butneedsspecialfireprotectionprocessing,issuitableineachkindofstressnature
concretestructurecomponentandthegeneralconstruction。
Thislaw'sgoodandbadpointswithenlargethemethodofctionstobeclo;
Issuitablereinforcementwhichisinsufficientintheconcretestructurecomponent
obliquectionsupportingcapacity,ormustexertthecrosswibindingforcetothe
compressionalmemberthesituation。
6)Reelinglaw
Thislaw’sgoodandbadpointswithenlargethemethodofctionstobeclo;
Issuitablereinforcementwhichisinsufficientintheconcretestructurecomponent
obliquectionsupportingcapacity,ormustexertthecrosswibindingforcetothe
compressionalmemberthesituation.
7)Fangboltanchorlaw
ThislawissuitableintheconcretesintensityrankistheC20~C60concretes
load—bearingmembertransformation,thereinforcement;Itisnotsuitablefor
alreadytheabovestructurewhichandthelightqualitystructuremakesdecent
riously。
1.2Theindirectreinforcement'sgeneralmethod
1)Pre-stresdreinforcementlaw
(1)Thepre—stresdhorizontaltensionbarreinforcesconcretesmemberin
bending,becauthepre-stresdandincreastheexteriorloadthecombinedaction,
inthetensionbarhastheaxialtension,thisstrengtheccentrictransmitsonthe
componentthroughthepoleendanchor(,whentensionbarandLiangboard
bottomsurfaceclofitting,tensionbarcanlookfortunetogetherwithcomponent,
thisfashionhaspartialpressurestotransmitdirectlyforcomponentbottomsurface),
hastheeccentriccompressionfunctioninthecomponent,thisfunctionhasovercome
thebendingmomentwhichoutsidetheparttheloadproduces,reducedoutsidethe
loadeffect,thussharpenedcomponent’ametime,
becauthetensionbarpasstocomponent’spressurefunction,thecomponentcrack
developmentcanalleviate,thecontrol,theobliquectionanti—tocutthe
supportingcapacityalsoalongwithitenhancement.
Asaresultofthehorizontalliftingstem’sfunction,theoriginalcomponent’s
ctionstresscharacteristicbyreceivedbendsturnedtheeccentriccompression,
therefore,afterthereinforcement,component’ssupportingcapacitywasmainly
decidedinbendsundertheconditiontheoriginalcomponent’ssupportingcapacity。
(2)Afterthereinforcedconcretecomponentusunderthepre-stresdto
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supportthetypetensionbarreinforcementdecides,formsonebytoreinforcethe
componentandundersupportsthecompoundultrastaticallydeterminatestructure
systemwhichthetypetensionbariscompod,undertheoutsideloadandthe
pre-stresdcombinedaction,inthetensionbarhastheaxialforceandthrough(next
supportsandpoleendanchorspot)withcomponent'scombiningsitetransmitsforis
reinforcedthecomponent,hascounter—balancedoutsidetheparttheload,changed
theoriginalcomponentctionendogenicforcecharacteristic,thussharpened
component’sbearingcapacity。
Thislawcanreduceisreinforcedcomponent'sstresslevel,notonlycausthe
reinforcementeffecttobegood,moreovercanalsothegreatscopeenhancethe
structureoverallsupportingcapacity,butafterreinforcing,hascertaininfluencetothe
originalstructureoutwardappearance;Issuitableaswellasisunderthehighstress,
thehighstrainedconditionconcretescomponent’sreinforcementinthegreatspanor
theheavystructurereinforcement,butinthenon—protection’ssituation,cannotu
inthetemperatureabove600Cintheenvironment,isalsonotsuitableusinthe
concreteshrinkagecontinuousvariationbigstructure.
2)Increasthesupportingreinforcementlaw
Theadditionpivotreinforcementlawisthroughthereducedmemberinbending
effectivespan,achievesthereducedfunction,inisreinforcedonthecomponentto
carrytheeffect,raisthestructureloadbearinglevelthegoal。Thislawsimple
reliable,buteasytoharmbuilding'soriginalconditionandtheufunction,possibly
andreducesusthespace;Issuitableintheconcretetermpermissionconcrete
structurereinforcement.
1.3Hasgenerallywiththeconcretestructurereinforcementtransformation
necessaryu’stechnology
1)Therequesttradesthetechnology
Itisthejoist(eithertruss)opensthecolumn(orwall),thejoistterminalandthe
joisttradestechnologiesandsooncolumntocallgenerally;Belongstoonekindof
comprehensivetechnology,bytherelatedstructurereinforcement,thesuperstructure
goesagainstriswithtorepositionaswellasabandonstechnologiesandsoon
componentdemolitiontobecompod;Issuitableinhadbuilding’sreinforcement
transformation;Compareswiththetraditionalpractices,hastheconstructiontimeto
beshort,theexpenlow,affectsandsoonmeritsslightlytothelifeandthe
production,butishightothespecification,mustcompletebytheskilledworker,
canensurethecurity.
2)Plantsthemuscletechnology
Itisoneitemissimpleanddirecttotheconcretestructure,theeffective
connectionandtheanchortechnology;Mayimplanttheordinarysteelbar,may
alsoimplantthebolttypeanchormuscle;Haswidelyappliedinhadbuilding’s
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reinforcementimprovementproject,forexample:Intheconstructionleaksburiesthe
steelbarorthesteelbardeviationdesignsthepositiontherecovery,thecomponent
increasthectionreinforcementtomakeupthemuscle,thesuperstructureexpands
cross,goesagainstristoLiang,column'slengtheningbyjoining,thehou
superimpodlayerterminalandthehigh—riconstructionadditionshearingforce
wallplantsthemuscleandsoon.
3)Crackpatchingtechnology
Accordingtotheconcretescrack’scau,thecharacterandthesize,ual
differentlyprotectthemethodtocarryonpatching,onekindofskillwhichcaus
thestructurebecautocrackreducestheufunctionwhichandthedurabilitycan
restore;Issuitableinhadinthebuildingeachkindofcrackprocessing,buttothe
stresscrack,besidespatching,stillshoulduthecorrespondingreinforcement
measure。Theinternalpatchinglawiswiththeforcingpumpthecementingmaterial
pressureconcretescrack,renderstheyoungorupandcominggenerationtowup
thefunction,andmakestheoriginalstructurethroughitscementationtorestorethe
integrity,thismethodissuitableforthecrackopeningisbig,anddurableandsoon
isinfluentialtothestructureintegrityandthecurity,orhasrequestandsoon
waterproofanti—epagecrackpatching。
4)Carbonizedconcretesrepairtechnology
Itisreferstothroughrestorestheconcretesthealkalinity(inactivation)or
increasitsimpedancetoenablethesteelbarcorrosionwhichthecarbonization
createstoobtainthecontainmenttechnology.
5)Concretessurfacetreatmenttechnology
Itisreferstouscleaningupconcretessurfacestains,theoilmark,theresidual
aswellastheotherattachmentandsoonchemistrymethod,mechanicalmethod,
sandblastingmethod,vacuumcleaningmethod,injectionmethodskill.
6)Coagulationmantleofsoilaltechnology
Itisreferstousflexiblemethodsandsoonaquaalbackfill,polymer
grouting,paintfilmtocarryonthewaterproofingtotheconcretes,moisture-proof
andagainstcrackprocessingtechnology。Likethestructure,thecomponentshift
thetechnology,theadjustmentstructurebafrequencytechnologyandsoon.
7)Othertechnologies
Likethestructure,thecomponentshiftthetechnology,theadjustment
structurebafrequencytechnologyandsoon。
2Bricking-upstructure
Bricking-upstructurereinforcementmethod:Thebricking-upstructure’s
reinforcementdividesintowhenthedirectreinforcementandreinforcestwokinds
indirectly,thedesign,mayactaccordingtotheactualconditionandtheoperation
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requirementschoicebeingsuitablemethod。
2.1suitableforthebricking—upstructuredirectreinforcementmethod
1)outsidereinforcedconcretesuperimpodlayerreinforcementlaw
Thislawbelongstothecompoundctionreinforcementmethodonekind。Its
meritistheconstructioncraftsimple,compatible,afterthebricking—up
reinforcement,thesupportingcapacityhanhancesgreatly,andhasthemature
designandtheconstructionexperience;Issuitableinthecolumn,thebeltwallwall
reinforcement;Itsshortcomingisthesceneconstructionwetoperatingtimeislong,to
produceshascertaininfluencewiththelife,andafterreinforcingthebuilding
clearancehascertainreduction.
2)outsidereinforcedconcretemortarsuperimpodlayerreinforcement
law
Thislawbelongstothecompoundctionreinforcementmethodonekind。Its
meritandoutsidethereinforcedconcretethesuperimpodlayerreinforcementlawis
clo,butenhancesthesupportingcapacitytobeinferiortotheformer;Issuitablein
thebricking-upwallreinforcement,sometimesalsousinoutsidethereinforced
concretewhenthesuperimpodlayerreinforcementbeltengagedcolumnwallthe
bothsidesputonthewallstirruptheal。
3)theadditionholdstheengagedcolumnreinforcementlaw
it
thesuperimpodlayerreinforcementlawisalsoclowiththereinforcedconcrete
outside,butthesupportingcapacityenhanceslimitedly,anddifficulttosatisfythe
earthquakeresistancerequest,generallyonlyinpeneismiccountryapplication。
2.2suitableforthebricking—upstructureindirectreinforcementmethod
1)non—cakingoutsourcingctionreinforcementlaw
Thislawbelongstothetraditionalreinforcementmethod,itsmeritisthe
constructionissimple,thesceneworkloadandthewetworkarefew,thestressis
morereliable;Issuitableindoesnotallowtoincreatheoriginalcomponentction
size,actuallyrequeststoenhancethectionsupportingcapacitylargescalethe
bricking—upcolumn’sreinforcement;Itsshortcomingishighforthereinforcement
expen,andmustuthesimilarsteelstructuretheprotectivemeasure。
2)pre—stresdstayrodreinforcementlaw
Thislawcanthegreatscopesharpenthebricking—upcolumn’sbearingcapacity,
andthereinforcementeffectisreliable;Issuitableprocessthehighstress,the
highstrainedconditionbricking—upstructurereinforcementinthereinforcement;
Itsshortcomingcannotuinthetemperatureinthe600Caboveenvironment。
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中文翻译:
混凝土结构配筋设计
SheyanboⅡⅠWangchenjia
Ⅰ基础工程有限公司黑龙江东宇
Ⅱ黑龙江省东建筑地基基础工程有限公司煤
摘要:在长期的自然的环境下使用环境的功能结构,其功能减弱不可避免地渐渐地,我们的
结构工程的责任不只是必须完成建设前期项目工作,但必须能够科学评价结构的破坏目标法
律和程度,并采用有效的方法保证结构的安全使用,该结构加固将成为一个重要的工作。什
么可以预见将是21世纪,人类建筑的混凝土结构,钢结构,砌体式结构等为主另外,现阶段
我会觉得在结构加固我们这方面的研究也应借此作为主要的突破方向。
关键词:混凝土结构加固砌体式结构钢筋结构加固
1混凝土结构加固
混凝土结构的加固分为直接加固,并加强间接两种,在设计时可根据实际条件和使用要求选
择适宜的方法和必要的技术.
1.1直接加固的一般方法
1)放大段加固法
添加混凝土现浇钢筋发生水平弯曲受压区混凝土构件,可能会增加部分有效高度,扩大截面
面积,从而提高了组件的右侧部分反弯,斜截面抗切割能力部分刚度,起到加固补强的作用。
在适当的肌肉范围,改变混凝土弯曲的组件的右侧部分配套能力,随着钢筋面积和强度的提
高增加。在原来的组件的右侧部分钢筋的比例不太高的情况,增加了主要加固面积有可能提
出的高原组件的右侧部分抗弯曲能力,有效地支持。拉一节中,通过新的加拿大部分和原构
件共同工作的领域添加现浇现浇混凝土外套组成部分增加,但提高了有效成分的配套能力,
改善正常的经营业绩。
放大段加固法施工工艺简单,兼容,并具有成熟的设计和施工经验,在梁,板,柱,墙和一般结
构用混凝土加固;但现场施工的湿作业时间长,对生产与生活有一定的影响,并加强建筑清拆
后有一定减少.
2)置换混凝土加固法
该法与放大优点的部分方法被关闭,并经过加强的,不影响建筑物的清拆,但同样存在施工
湿作业时间长的缺点;适合偏低或有混凝土承运人等严重缺陷梁,柱受压区混凝土强度的钢
筋.
3)粘结外包段加固法
外包头钢铁厂强化是在部分或钢板包裹是钢筋构件的外,境外包头钢铁厂强化钢筋混凝土梁
使用湿外包法律一般,即采用环氧树脂化中的牛奶等上与方法,以加强段施工委员会蛋糕一
个整体,加固后的组件,因为是压缩钢横截面面积大幅度提高拉,所以右侧部分配套能力和
部分刚性大幅度的提高。
该法还表示,包头钢铁厂外湿加固法,应力可靠,施工简便,现场工作量小,但与钢材数量大,
不宜在上面,在非600℃用途,保护的形势高温场所;适合不允许在使用明显增加原构件截面
尺寸,但要求以增强其承载能力的大型混凝土结构的加固。
4)粘钢加固法
外面的钢筋弯曲混凝土构件粘钢加固是(右边部分被拉到在组件配套能力不足,扇形的面积,
右侧部分受压区或斜截面)表面胶钢板,这样可以提高是增强组件的配套能力,和施工方便。
该法施工速度快,现场工作或不湿上只有少数湿抹灰工程等,对生产与生活的影响小,经过
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加强的,是不显着原有结构的外观和原定清拆影响,但加固效果是决定由胶粘工艺和操作水
平很大程度上,是在合适的承受静态函数,而在正常的湿度环境是弯曲或拉构件加固。
5)粘胶纤维增强塑料加固法
外贴纤维加固与胶结材料粘贴在该组件是加强该地区的拉纤维增强复合材料,使其与一节加
强联合工作,达到磨练组件承载能力的目的。除了具有类似胶水的钢板的优点,又具有防腐
泥泞,耐潮湿,不增加自身结构重量近,耐用,维护费用低等优点,但需要特殊的防火处理,是
适合各种应力混凝土结构构件的性质和一般建设。
此法的优点和缺点与扩大部分将接近法是适用于钢筋混凝土结构构件的斜截面承载力不足,
或必须施加横向约束力的挤压成员的情况。
6)缫丝法
此法的优点和缺点与扩大部分将接近法是适用于钢筋混凝土结构构件的斜截面承载力不足,
或必须施加横向约束力的挤压成员的情况。
7)锚杆锚固法方
这项法律是在合适的混凝土强度等级为C20的混凝土〜C60的承重成员改造,加固,它已经
不适合上述结构,素质结构,光认真适合很体面.
1.2间接加固的一般方法
1)预应力加固法
(1)Thepre,强调加强横向拉杆弯曲混凝土的成员,因为前强调,增加外部装入拉杆的共
同作用,有轴向张力,通过杆结束这一部分的人数上的偏心传输锚(当拉杆与梁底部表面紧密
贴合板,拉杆可以寻找调整与组件一起,这股热潮已分压传输组件底部表面直接),在组件
中的偏心压缩功能,这个功能已经克服弯矩以外的部分负荷生产外荷载效应降低,从而激化
组件的抗弯曲能力.同时,由于拉杆传递给组件的压力的作用,组件裂纹的发展可以缓解,
控制,斜截面反减的配套能力也增强与它一起。
作为水平提升干的函数的结果,原来的组件的部分由收到弯曲应力的特点变成了偏心受压,
因此,在加固,组件的配套能力,主要是在弯曲决定的条件下,原始组件的配套能力。
(2)在钢筋混凝土构件在使用前强调,要支持类型拉杆加固决定,形成一个由组件和加强支
持下的复合超静定结构体系的类型拉杆组成,下外荷载和预应力的综合作用,在拉杆具有轴
力,并通过与组件的结合的是增强了组件站点发送(未来支持和极端锚固点),已超出部分
的负载反平衡,改变了原有构件截面内生力特性,从而激化组件的承载能力。
此法可减少是钢筋构件的应力水平,不仅使加固效果好,而且还能大范围提高结构的整体配
套能力,但经过加固,有一定的影响,对原结构外观,适合作为以及在高压力,高紧张状态混
凝土构件的加固,在大跨度或重型结构加固,但在非保护的情况下,不能使用在上述环境中的
600℃的温度,也没有合适的用途不断变化的混凝土收缩大结构。
2)增加配套加固法
此外支点加固法的通过在弯曲有效跨度减少成员,达到减少功能,是在组件上进行效果增强,
提高了结构承载水平的目的。该法简单可靠,但容易损害建筑物的原貌和使用功能,可能并
减少使用空间;是在混凝土结构加固混凝土许可期限合适.
与混凝土结构加固改造配套使用的技术1。3Has一般
1)行业的技术要求
这是托梁(或桁架)打开列(或墙),终端的托梁和托梁和柱行业的技术叫一般左右;属于一
种综合技术由相关结构加固,上层建筑违背与上升重新定位以及放弃等部件拆卸组成技术,
适合在有建筑物的加固改造;与传统做法相比,具有施工时间短,费用低,影响和对案情非
常轻微对生活和生产,但高到规范,必须完成由熟练的工人,可以确保安全。
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2)植物的肌肉技术
这是一项很简单和直接的混凝土结构,有效连接和锚固技术;可植入普通钢筋,也可植入螺
栓式锚肌肉;已广泛应用在了建筑物的加固改造工程,例如:在施工中泄漏埋钢筋或钢筋偏
离设计位置的复苏,组件增加了段加固来弥补肌肉,上层建筑扩大交叉,对上升去梁,柱的
通过加入延长,房子叠加终端和层高层建筑剪力墙除了植物的肌肉等.
3)裂缝修补技术
根据混凝土裂缝的原因,性质和规模,使用印章不同的保护方法进行修补,一种技能,会导致
结构,因为打击减少使用功能,和耐久性能恢复;适合于有在建筑物裂缝处理每一种,但对应
力裂纹修补之外,还应该使用相应的加固措施。内部修补法与强制泵压混凝土胶凝材料的裂
纹,呈现年轻或行动和未来一代缝合功能,使得通过其胶结恢复原来的结构的完整性,这种方
法是合适的裂缝开口大,耐用等有影响的结构完整性和安全性,或有防水防渗修补裂缝要求
等。
4)碳化混凝土修复技术
它是指通过恢复到混凝土的碱度(灭活)或增加其阻抗,使钢筋产生腐蚀,碳化技术得到遏
制。
5)混凝土表面处理技术
它是指采用混凝土表面的污渍清理,油痕,残以及其他附件和化学法,机械法,喷砂法,真空清
洗方法,注射的方法技巧等。
6)凝血地幔土壤密封技术
它是指用灵活的方法和密封剂回填等,聚合物灌浆,漆膜进行的混凝土防水,防潮和防止裂
缝处理技术。像结构,组件技术的转移,调整结构基频技术等。
7)其他技术
像结构,组件技术的转移,调整结构基频技术等。
2砌体式结构
砌体式结构加固方法:砌体式结构的加固补强到时直接和间接地分为两种强化,设计,可根
据实际条件和使用要求选择适宜的方法。
2。1适合于砌体式结构直接加固方法
1)外部钢筋混凝土叠合层加固法
该法属于复合段加固方法的一种。其优点是施工工艺简单,兼容,后砌体式加固,配套能力
已大大提高,并具有成熟的设计和施工经验,在列,带墙壁加固合适,它的缺点是现场施工
湿作业时间长,对生产与生活有一定的影响,并加强建筑清拆后有一定减少.
2)在境外的钢筋混凝土叠合层砂浆加固法
该法属于复合段加固方法的一种。它的优点和外部的钢筋混凝土叠合层加固法相近,但提高
配套能力不如前者;是在砌体式挡土墙加固合适,有时还使用钢筋混凝土外的加层加固时带
从事柱壁在墙上的两个马镫把密封面。
3)除持有从事柱加固法
该法扩大了部分属于一种加固方法。其优点是加层加固法也是密切与钢筋混凝土以外,但配
套能力增强局限的,难以满足抗震要求,一般只在peneismic国家申请.
2。2适合于砌体式结构的间接加固方法
1)非结块外包段加固法
该法属于传统的加固方法,其优点是结构简单,现场的工作负荷和湿工作少,强调的是更可
靠;适合在不允许增加原构件截面尺寸,其实要求提高部分配套能力的大型砌体式柱的加固,
其缺点是费用高的钢筋,而必须使用类似钢结构的防护措施。
2)预应力加固法撑杆跳高
10
此法可大范围锐化砌体式柱的承载能力,加固效果可靠,适用于处理高压力,高紧张状态砌
体,在钢筋结构加固,其缺点不能使用的温度600℃以上的环境中。
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