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福建省工程建設(shè)地方標(biāo)準(zhǔn)
DBJ13-74-20XX
住房和城鄉(xiāng)建設(shè)部備案號:J10753-20XX
風(fēng)貌建筑加固修復(fù)工程
施工質(zhì)量與安全技術(shù)規(guī)程
Specificationforengineeringqualityandsafetytechnology
ofhistoricartificialbuildingreinforcementandrestoration
20XX-XX-XX發(fā)布20XX-XX-XX實(shí)施
福建省住房和城鄉(xiāng)建設(shè)廳發(fā)布
1
前言
根據(jù)福建省住房和城鄉(xiāng)建設(shè)廳《關(guān)于發(fā)布福建省工程建設(shè)地
方標(biāo)準(zhǔn)復(fù)審結(jié)果的通知》閩建科[2014]45號要求,由廈門市建設(shè)
工程質(zhì)量安全監(jiān)督站、廈門源昌城建集團(tuán)有限公司主編而成。編
制組經(jīng)廣泛調(diào)查研究,總結(jié)實(shí)踐經(jīng)驗(yàn),參考國家和行業(yè)有關(guān)標(biāo)準(zhǔn),
并在廣泛征求意見的基礎(chǔ)上,修訂本規(guī)程。
本規(guī)程共分17章2個(gè)附錄和10個(gè)附表,主要技術(shù)內(nèi)容包括:
總則,術(shù)語,基本規(guī)定,地基與基礎(chǔ)加固,砌體結(jié)構(gòu)加固,混凝
土結(jié)構(gòu)加固,木結(jié)構(gòu)加固與修復(fù),生土墻體加固與修復(fù),地面修
復(fù),建筑裝飾裝修與修復(fù),建筑屋面加固與修復(fù),建筑給水、排
水系統(tǒng)安裝,建筑電氣,智能建筑,臨時(shí)加固與拆除,施工安全,
質(zhì)量驗(yàn)收。
本次修訂的主要內(nèi)容是:1.增加風(fēng)貌建筑生土墻體加固與修
復(fù)技術(shù)要求;2.增加和充實(shí)了小木作加固與修復(fù)技術(shù)以及雕塑制
作與安裝;4.將原來建筑材料質(zhì)量檢測的章節(jié)調(diào)整到其他篇章;5.
將工程施工質(zhì)量竣工驗(yàn)收修改為適用于各分部和竣工驗(yàn)收的要
求;6.按照現(xiàn)行國家技術(shù)標(biāo)準(zhǔn)修訂了相關(guān)篇章。
本規(guī)程由福建省住房和城鄉(xiāng)建設(shè)廳負(fù)責(zé)管理,由廈門市建設(shè)
工程質(zhì)量安全監(jiān)督站負(fù)責(zé)具體技術(shù)內(nèi)容的解釋。執(zhí)行過程中如有
意見或建議,請反饋給福建省住房和城鄉(xiāng)建設(shè)廳建筑節(jié)能與科學(xué)
技術(shù)處(地址:福州市北大路242號,郵政編碼350001)。
2
3
目次
1總則................................................................................................1
2術(shù)語................................................................................................2
3基本規(guī)定........................................................................................3
4地基與基礎(chǔ)加固............................................................................5
4.1一般規(guī)定..............................................................................................5
4.2水泥土攪拌樁地基..............................................................................6
4.3旋噴樁復(fù)合地基..................................................................................7
4.4換填地基..............................................................................................9
4.5鉆孔灌注樁托換加固........................................................................10
4.6壓入預(yù)制樁基托換加固....................................................................12
4.7基礎(chǔ)加大截面加固............................................................................15
4.8沉管砂石樁復(fù)合地基........................................................................17
4.9水泥粉煤灰碎石樁復(fù)合地基..............................................................18
4.10基坑(槽)工程..............................................................................20
5砌體結(jié)構(gòu)加固..............................................................................22
5.1一般規(guī)定............................................................................................22
5.2混凝土鋼筋網(wǎng)加固............................................................................23
5.3水泥砂漿鋼筋網(wǎng)加固........................................................................25
5.4聚合砂漿鋼絲繩網(wǎng)加固....................................................................28
6混凝土結(jié)構(gòu)加固..........................................................................31
6.1一般規(guī)定............................................................................................31
6.2加大截面加固....................................................................................32
6.3置換加固............................................................................................34
6.4外包型鋼加固....................................................................................35
6.5粘貼鋼板加固....................................................................................37
6.6粘貼纖維復(fù)合材加固........................................................................39
4
6.7預(yù)應(yīng)力加固........................................................................................41
6.8化學(xué)植筋............................................................................................43
6.9改變結(jié)構(gòu)傳力體系加固....................................................................45
6.10繞絲加固..........................................................................................47
7木結(jié)構(gòu)加固與修復(fù)......................................................................49
7.1一般規(guī)定............................................................................................49
7.2木結(jié)構(gòu)加固修繕................................................................................50
7.3木結(jié)構(gòu)改造........................................................................................53
7.4斗拱(科牌)制作和安裝................................................................54
8生土墻體加固與修復(fù)..................................................................63
8.1一般規(guī)定............................................................................................63
8.2生土墻體歪閃傾斜的扶正加固........................................................64
8.3生土墻體裂縫修補(bǔ)............................................................................66
8.4生土墻體錨桿加固............................................................................68
8.5生土墻面破損缺失抹灰修復(fù)加固....................................................69
8.6生土墻面破損缺失土坯補(bǔ)砌修復(fù)加固..............................................70
9地面修復(fù)......................................................................................73
9.1一般規(guī)定............................................................................................73
9.2基層....................................................................................................73
9.3斗底磚地面........................................................................................73
9.4現(xiàn)澆水磨石地面................................................................................75
9.5天然石板材地面................................................................................76
9.6磚墁地面............................................................................................78
9.7面磚板塊地面....................................................................................80
9.8預(yù)制板材地面....................................................................................82
9.9木地板地面........................................................................................83
10建筑裝飾裝修與修復(fù)...............................................................85
10.1一般規(guī)定..........................................................................................85
10.2外墻面修復(fù)......................................................................................85
10.3一般抹灰..........................................................................................87
5
10.4涂飾..................................................................................................90
10.5門窗安裝..........................................................................................94
10.6玻璃安裝..........................................................................................97
10.7細(xì)部..................................................................................................99
10.8雕塑、彩畫制成與修復(fù)................................................................103
11建筑屋面加固與修復(fù)..............................................................108
11.1一般規(guī)定........................................................................................108
11.2基層................................................................................................109
11.3琉璃瓦屋面.....................................................................................112
11.4紅(青)瓦屋面.............................................................................114
11.5斗底磚屋面.....................................................................................116
11.6屋脊及飾件.....................................................................................118
11.7防水細(xì)部........................................................................................120
12建筑給水、排水系統(tǒng)安裝.......................................................121
12.1一般規(guī)定..........................................................................................121
12.2給水系統(tǒng)安裝................................................................................122
12.3排水系統(tǒng)安裝................................................................................123
12.4衛(wèi)生器具安裝................................................................................124
13建筑電氣.................................................................................126
13.1一般規(guī)定........................................................................................126
13.2電氣纜線安裝................................................................................126
13.3電氣照明安裝................................................................................129
13.4防雷接地........................................................................................132
14智能建筑.....................................................................................136
14.1一般規(guī)定........................................................................................136
14.2火災(zāi)自動報(bào)警及消防聯(lián)動系統(tǒng)....................................................136
14.3視頻安防監(jiān)控系統(tǒng)........................................................................138
15臨時(shí)加固與拆除.....................................................................140
15.1一般規(guī)定........................................................................................140
15.2施工前準(zhǔn)備....................................................................................140
6
15.3主要受損構(gòu)件臨時(shí)加固措施........................................................141
15.4檢查要點(diǎn)........................................................................................142
15.5構(gòu)件拆除........................................................................................143
16施工安全.................................................................................145
16.1一般規(guī)定........................................................................................145
16.2基礎(chǔ)掏挖........................................................................................145
16.3模板支撐........................................................................................146
16.4外腳手架........................................................................................147
16.5垂直運(yùn)輸機(jī)械................................................................................147
16.6施工臨時(shí)用電................................................................................148
16.7施工現(xiàn)場防火...................................................................................148
16.8臺風(fēng)氣象環(huán)境現(xiàn)場管理...................................................................149
16.9施工機(jī)具........................................................................................150
16.10文明施工........................................................................................150
16.11安全管理......................................................................................151
17質(zhì)量驗(yàn)收.................................................................................152
附錄A自密實(shí)混凝土..................................................................155
附錄B永定五云樓修復(fù)實(shí)效.....................................................157
附表1風(fēng)貌建筑加固修復(fù)工程分部(子分部)工程、分項(xiàng)工程
劃分..................................................................................................161
附表2風(fēng)貌建筑加固修復(fù)工程檢驗(yàn)批質(zhì)量驗(yàn)收記錄.......................162
附表3風(fēng)貌建筑加固修復(fù)工程分項(xiàng)工程質(zhì)量驗(yàn)收記錄..........................163
附表4風(fēng)貌建筑加固修復(fù)工程分部(子分部)工程質(zhì)量驗(yàn)收記
錄......................................................................................................164
附表5風(fēng)貌建筑加固修復(fù)單位工程質(zhì)量控制資料核查記錄..165
續(xù)附表5風(fēng)貌建筑加固修復(fù)單位工程質(zhì)量控制資料核查記錄166
附表6風(fēng)貌建筑加固修復(fù)單位工程安全和功能檢驗(yàn)資料核查及
主要功能抽查記錄..........................................................................167
7
附表7風(fēng)貌建筑加固修復(fù)單位工程觀感質(zhì)量檢查記錄..........168
附表8風(fēng)貌建筑加固修復(fù)單位工程質(zhì)量竣工驗(yàn)收記錄.........................169
附表9結(jié)構(gòu)加固分部工程質(zhì)量竣工驗(yàn)收記錄..........................170
附表10結(jié)構(gòu)加固工程隱蔽檢查驗(yàn)收記錄表............................171
本規(guī)程用詞用語說明......................................................................172
條文說明.....................................................................................174
8
Contents
1Generalprovision···································1
2Terms·················································2
3Basicrequirements····································3
4ReinforcementofFoundations································5
4.1General···················································5
4.2CementSoilMixingPileFoundation·····················6
4.3JetGrountingPileComposite
Foundation·················7
4.4ExchangeFillingGround································9
4.5UnderpinningReinforcementofBoredPile··············10
4.6UnderpinningReinforcementofPressedPrefabricated
Pile···················································12
4.7Broad-SectionMethodofFoundationReinforcement·····15
4.8ImmersedTubeSandGravelPileCompositeFoundation·17
4.9CementFcy-ashGravelPileCompositeFoundation······18
4.10FoundationPit(Trench)Engineering··················20
5ReinforcementofMasonryStructures························22
5.1General··············································22
5.2ReinforcementbyRebarMesheswithConcrete·········23
5.3ReinforcementbyRebarMesheswithCementMortar····25
5.4ReinforcementbyWireMesheswithPolymerMortar····28
6ReinforcementofConcreteStructures························31
6.1General··············································31
6.2ReinforcementbySectionEnlargement·················32
6.3ReinforcementbyReplacementMethod················34
6.4ReinforcementbyRaisedSectionalSteelMethod········35
9
6.5ReinforcementbyBondingSteelPlate··················37
6.6ReinforcementbyBondingCompositeFiber············39
6.7ReinforcementbyPrestressingMethod··················41
6.8ChemicallySteelBarPlanting··························43
6.9ReinforcementbyChangingtheForceTransmissionSystem
ofStructures·········································45
6.10ReinforcementwithSpiralHoops·····················47
7ReinforcementandRestorationofTimberStructures··········49
7.1General··············································49
7.2ReinforcementandRestorationofTimberStructures····50
7.3ReconstructionofTimberStructures····················53
7.4ManufactureandInstallationofBracketsandMemorial
Archs················································54
8ReinforcementandRestorationofEarthenWalls·············63
8.1General··············································63
8.2SettingUprightandReinforcementofTiltedEarthenWalls
·····················································64
8.3CrackRepairofEarthenWalls·························66
8.4ReinforcementofEarthenWallsbyAnchoredBolt·······68
8.5RestorationandReinforcementofEarthenWallsby
PlasteringtheDefectSurface····························69
8.6RestorationandReinforcementofEarthenWallsbyFilling
intheAdobeBrick·····································70
9GroundRestoration········································73
9.1General···············································73
9.2GroundBase··········································73
9.3BracketBottomBrickGround··························73
9.4Cast-in-situTerrazzoGround···························75
9.5NaturalStonePlateGround····························76
10
9.6BrickPlasteredGround································78
9.7TileGroundPlateGround······························80
9.8PrecastSlabGround···································82
9.9WoodenBoardsGround································83
10ArchitecturalDecorationandRestoration····················85
10.1General············································85
10.2RestorationofExternalWall·························85
10.3GeneralPlastering··································87
10.4Coating············································90
10.5InstallationofDoorsandWindows···················94
10.6InstallationofGlass·································97
10.7Detailing···········································99
10.8Sculpture,PaintingandRepair······················103
11ReinforcementandRestorationofBuildingRoof············108
11.1General············································108
11.2RoofBase·········································109
11.3GlazedTileRoof···································112
11.4Red(Gray)TileRoof·······························114
11.5BracketBottomBrickRoof·························116
11.6RidgeandDecorations······························118
11.7WaterproofDetailing·······························120
12InstallationofBuildingWaterSupplyandDrainageSystem··121
12.1General···········································121
12.2InstallationofWaterSupplySystem·················122
12.3InstallationofWaterDrainageSystem···············123
12.4InstallationofSanitaryFixture······················124
13ArchitecturalElectric·····································126
13.1General···········································126
13.2InstallationofElectricalCable······················126
11
13.3InstallationofElectricalLighting····················129
13.4LightingGrounding································132
14IntelligentBuilding·······································136
14.1General············································136
14.2FireAlarmandFireFightingJointControlSystem····136
14.3VideoSurveillance&ControlSystem················138
15TemporaryReinforcementandRemoval····················140
15.1General············································140
15.2PreparationBeforeConstruction·····················140
15.3TemporaryReinforcementMeasuresforMainDamaged
Components········································141
15.4InspectionPoints···································142
15.5ComponentRemoval·······························143
16ConstructionSafety·······································145
16.1General············································145
16.2FoundationDig····································145
16.3TemplateSupport··································146
16.4Externalscaffolds··································147
16.5Verticaltransportationmachinery····················147
16.6TemporaryElectricityforConstruction···············148
16.7FirePreventioninConstructionSite·················148
16.8FieldManagementofTyphoonMeteorological
Environment·······································149
16.9ConstructionEquipments···························150
16.10CivilizedConstruction·····························150
16.11SecurityManagement·····························151
17QualityInspection········································152
AppendixASelf-CompactingConcrete·······················155
AppendixBActualEffectontheRestorationofYongdingWuyun
12
Building··································157
Schedule1ClassificationofDivisionalandSub-DivisionalWork
onHistoricArtificialBuildingReinforcementandRestoration····161
Schedule2InspectionLotQualityAcceptanceRecordforHistoric
ArtificialBuildingReinforcementandRestoration···············162
Schedule3Sub-DivisionalWorkQualityAcceptanceRecordfor
HistoricArtificialBuildingReinforcementandRestoration·······163
Schedule4DivisionalWorkQualityAcceptanceRecordfor
HistoricArtificialBuildingReinforcementandRestoration·······164
Schedule5QualityControlDataCheckRecordforUnit
EngineeringofHistoricArtificialBuildingReinforcementand
Restoration···················································165
Schedule6VerificationofSafetyandFunctionTestDataandMain
FunctionSamplingRecordforUnitEngineeringofHistoricArtificial
BuildingReinforcementandRestoration························167
Schedule7PerceptionofQualityInspectionRecordforUnit
EngineeringofHistoricArtificialBuildingReinforcementand
Restoration···················································168
Schedule8QualityAcceptanceRecordforUnitEngineeringof
HistoricArtificialBuildingReinforcementandRestoration·······169
Schedule9QualityAcceptanceRecordforSub-DivisionalWorksof
StructureReinforcementEngineering···························170
Schedule10ConcealedInspectionandAcceptanceRecordfor
StructureReinforcementEngineering···························171
Explanationofwordinginthisspecification··················172
13
1總則
1.0.1為加強(qiáng)我省風(fēng)貌建筑工程加固修復(fù)施工管理,保證工程質(zhì)
量與施工安全,制定本規(guī)程。
1.0.2本規(guī)程適用于我省以磚石砌體、磚木及土木承重等混合結(jié)
構(gòu)以及混凝土結(jié)構(gòu)為主的風(fēng)貌建筑工程加固修復(fù)施工質(zhì)量與安全
控制和工程施工質(zhì)量檢查驗(yàn)收。
1.0.3風(fēng)貌建筑工程加固修復(fù)施工和工程質(zhì)量安全控制除執(zhí)行
本規(guī)程外,尚應(yīng)符合現(xiàn)行國家有關(guān)標(biāo)準(zhǔn)規(guī)范的規(guī)定。
1.0.4風(fēng)貌建筑工程加固修復(fù)應(yīng)本著“改善地基,加固基礎(chǔ)與結(jié)
構(gòu),完善功能,修舊如舊”的原則。
1.0.5承接風(fēng)貌建筑工程加固修復(fù)的勘察、設(shè)計(jì)和施工企業(yè),應(yīng)
具有建筑工程相應(yīng)資質(zhì)及從事加固修復(fù)工作的經(jīng)歷,承擔(dān)相應(yīng)的
責(zé)任;風(fēng)貌建筑加固修復(fù)的實(shí)施應(yīng)經(jīng)建設(shè)、消防等主管部門的施
工許可和審查。
1.0.6風(fēng)貌建筑加固修復(fù)工程施工應(yīng)建立和實(shí)施:
1施工組織方案技術(shù)論證制度;
2勘察、設(shè)計(jì)、施工、監(jiān)理(或建設(shè))等單位項(xiàng)目現(xiàn)場協(xié)調(diào)
配合機(jī)制;
3施工過程質(zhì)量、安全隱蔽檢查和階段性檢查驗(yàn)收簽認(rèn)機(jī)
制;
4施工安全應(yīng)急救援預(yù)案及演練。
1.0.7未注明日期的引用文件,其最新版本適用于本規(guī)程。
1
2術(shù)語
2.0.1風(fēng)貌建筑historicartificialbuilding
具有地方性歷史文化意義、藝術(shù)特色、科學(xué)研究價(jià)值、工藝
精致的保護(hù)性建筑。
2.0.2加固修復(fù)reinforcementandrestoration
使既有建筑達(dá)到規(guī)定的結(jié)構(gòu)安全和使用功能,同時(shí)又保留既
有建筑外觀的設(shè)計(jì)及施工。
2.0.3改變結(jié)構(gòu)傳力體系加固strengtheningforchanging
structuretransferringsystem
在保留既有建筑外觀的情況下,通過新增傳力體系全部或局
部代替既有結(jié)構(gòu)體系的加固方法。
2.0.4生土墻yawsoilwalls
利用未經(jīng)焙燒的沙質(zhì)粘土(黃土)、石灰、砂子(以分布在閩
西南的為例)等材料按一定比例拌合制成的主料,用夾墻板分層
夯筑而成的承重墻體。
2.0.5土樓earthbuildingscomplex
采用生土承重墻體與木作柱、梁等構(gòu)架系統(tǒng)合圍而成的圓形、
方形、矩形等具備生產(chǎn)和御敵的大型土木結(jié)構(gòu)、多層聚居性建筑。
2.0.6主控項(xiàng)目dominantitem
加固修復(fù)工程施工中對安全、衛(wèi)生、環(huán)境保護(hù)和公眾利益起
決定性作用的檢驗(yàn)要求。
2.0.7一般項(xiàng)目generalitem
除主控項(xiàng)目以外的檢驗(yàn)項(xiàng)目。
2
3基本規(guī)定
3.0.1風(fēng)貌建筑加固修復(fù)工程施工前,建設(shè)單位應(yīng)提供和收集下
列資料:
1既有建筑設(shè)計(jì)文件;
2既有建筑使用情況及歷次修繕資料;
3周邊市政管線資料和現(xiàn)場查勘實(shí)物記錄;
4既有建筑地基與基礎(chǔ)和主體結(jié)構(gòu)安全等級鑒定報(bào)告,及風(fēng)
貌建筑保護(hù)要求等資料;
5審查合格的工程地質(zhì)和水文勘察資料;
6經(jīng)施工圖審查機(jī)構(gòu)審查合格的加固修復(fù)設(shè)計(jì)文件;
7經(jīng)施工企業(yè)總工程師確認(rèn)的風(fēng)貌建筑實(shí)測的初始數(shù)據(jù)資
料和影像資料。
3.0.2風(fēng)貌建筑加固修復(fù)工程在施工前,施工單位應(yīng)編制完善的
施工組織設(shè)計(jì)及施工方案,并包括模板支撐與拆除、腳手架搭設(shè)
與拆除,重型運(yùn)輸機(jī)械安裝與施工臨時(shí)用電、成品與半成品保護(hù)、
安全應(yīng)急救援預(yù)案等專項(xiàng)施工方案。
3.0.3風(fēng)貌建筑加固修復(fù)工程的施工組織設(shè)計(jì)施工方案,應(yīng)經(jīng)施
工企業(yè)技術(shù)負(fù)責(zé)人及總監(jiān)理工程師審批,并組織專家論證后實(shí)施。
3.0.4施工現(xiàn)場應(yīng)建立完善的質(zhì)量與安全管理體系,確保施工方
案的實(shí)施和施工質(zhì)量與安全措施的落實(shí)。
3.0.5加固修復(fù)施工過程中重新發(fā)現(xiàn)既有建筑相關(guān)部位存在嚴(yán)
重的損傷或缺陷時(shí),應(yīng)暫停施工,在有關(guān)單位共同研究制定處理
意見后方可繼續(xù)施工。
3.0.6加固施工應(yīng)采取下列安全措施:
1基礎(chǔ)必須間隔施工;
2樓板拆除置換在同一層的各房間應(yīng)間隔施工,待新澆樓板
的混凝土達(dá)到設(shè)計(jì)強(qiáng)度后才能拆除相鄰的舊樓板的混凝土;
3柱和墻體加固施工應(yīng)采取安全可靠的方法進(jìn)行支護(hù),先施
工柱和墻,然后再施工梁板;
4施工中應(yīng)同時(shí)保留兩層樓面模板支撐不拆除以保證滿足
3
施工荷載的要求;
5當(dāng)可能出現(xiàn)傾斜、開裂或側(cè)塌等不安全因素,或可能發(fā)生
損傷原建筑風(fēng)貌時(shí),施工前應(yīng)采取有效的防范措施;
6當(dāng)遇有風(fēng)力在六級以上、大雪天、雷暴雨等惡劣氣候時(shí),
不得進(jìn)行施工作業(yè),并應(yīng)采取安全保護(hù)措施。
3.0.7風(fēng)貌建筑的土樓建筑施工應(yīng)遵循以下工序原則:備料、擇
時(shí)、分段挖(探)基、分段筑基、分層夯墻或加固修復(fù)墻體、獻(xiàn)
架或加固修復(fù)柱、梁、板木結(jié)構(gòu)、鋪瓦、裝飾及安裝水電設(shè)施等。
3.0.8既有建筑地基基礎(chǔ)加固工程,應(yīng)對建筑物在施工開始即應(yīng)
對整體既有建筑進(jìn)行沉降、位移、傾斜、開裂等觀測,直至沉降
達(dá)到穩(wěn)定為止,對鄰近建筑物和市政管線應(yīng)進(jìn)行相應(yīng)的監(jiān)測。
3.0.9風(fēng)貌建筑加固修復(fù)施工時(shí),應(yīng)編制對設(shè)計(jì)要求保留的既有
屋面、外墻及飾面和新建成品、半成品保護(hù)專項(xiàng)方案;工序交接
時(shí)應(yīng)按規(guī)定落實(shí)保護(hù)措施。
3.0.10加固修復(fù)所用的建筑材料應(yīng)具有產(chǎn)品合格證或出廠檢驗(yàn)
報(bào)告,應(yīng)按相關(guān)規(guī)定進(jìn)行進(jìn)場復(fù)驗(yàn)、見證取樣復(fù)驗(yàn),其性能應(yīng)符
合國家有關(guān)規(guī)范、技術(shù)標(biāo)準(zhǔn)的規(guī)定以及設(shè)計(jì)要求。
3.0.11風(fēng)貌建筑加固修復(fù)應(yīng)執(zhí)行現(xiàn)行國家和福建省有關(guān)建筑節(jié)能
標(biāo)準(zhǔn);同時(shí),結(jié)合實(shí)際著重在加固修復(fù)工程的屋面、門窗、電氣照
明等項(xiàng)目中使用節(jié)能措施和材料設(shè)備;并按規(guī)定施行質(zhì)量檢查驗(yàn)收。
3.0.12加固修復(fù)工程竣工驗(yàn)收時(shí),必須進(jìn)行室內(nèi)環(huán)境污染物濃
度檢測,檢測結(jié)果應(yīng)符合《民用建筑工程室內(nèi)環(huán)境污染控制規(guī)范》
(GB50325)的規(guī)定。
3.0.13風(fēng)貌建筑工程加固修復(fù)施工過程的記錄、質(zhì)量控制資料、
技術(shù)資料、竣工圖紙和驗(yàn)收手續(xù)等應(yīng)按政府有關(guān)規(guī)定收集整理歸檔。
4
4地基與基礎(chǔ)加固
4.1一般規(guī)定
4.1.1本規(guī)定適用于風(fēng)貌建筑地基與基礎(chǔ)工程加固、改造施工和
質(zhì)量檢查驗(yàn)收。
4.1.2風(fēng)貌建筑地基基礎(chǔ)加固的主要形式有:水泥土攪拌樁地
基、旋噴樁復(fù)合地基、換填地基、鉆孔灌注樁托換加固、壓入預(yù)
制樁基托換加固、基礎(chǔ)加大截面加固、沉管砂石樁復(fù)合地基、水
泥粉煤灰碎石樁復(fù)合地基。
4.1.3風(fēng)貌建筑地基與基礎(chǔ)加固施工應(yīng)在嚴(yán)防坍塌、跨塌的安全
施工環(huán)境下實(shí)施。施工的順序要本著“循序漸進(jìn)、邊挖邊探”的
原則,視上部主體結(jié)構(gòu)形式可采用“兩側(cè)對稱進(jìn)行、分段施工和
間隔施工”的原則,并結(jié)合地質(zhì)情況由深到淺實(shí)施。
4.1.4風(fēng)貌建筑地基加固處理質(zhì)量檢查驗(yàn)收應(yīng)采用分段施工、分
段檢查驗(yàn)收方式,并及時(shí)轉(zhuǎn)入分段基礎(chǔ)加固施工。由項(xiàng)目總監(jiān)理
工程師組織,施工項(xiàng)目技術(shù)負(fù)責(zé)人、勘察、設(shè)計(jì)項(xiàng)目負(fù)責(zé)人和建
設(shè)(業(yè)主)代表參加,工程質(zhì)量監(jiān)督部門的監(jiān)督人員監(jiān)督驗(yàn)收。
4.1.5地基與基礎(chǔ)加固施工前、后過程,應(yīng)對既有建筑及其鄰近
建筑、地下管線和地面的沉降、傾斜、位移和裂縫進(jìn)行監(jiān)測。
4.1.6當(dāng)采用豎向承載水泥攪拌樁或旋噴樁加固地基時(shí),宜在基
礎(chǔ)和樁頂之間設(shè)置褥墊層。褥墊層厚度可取200~300mm,其材
料可選用中砂、粗砂、級配砂石等,最大粒徑不宜大于30mm。
4.1.7風(fēng)貌建筑基礎(chǔ)加固工程質(zhì)量檢查驗(yàn)收,可采用分段施工分
段檢查驗(yàn)收的方式,并及時(shí)回填密實(shí);驗(yàn)收組織與程序按照第
4.1.4條相關(guān)規(guī)定執(zhí)行。
4.1.8作業(yè)區(qū)應(yīng)有明顯標(biāo)志或圍墻,非工作人員不得進(jìn)入。
5
4.1.9樁基操作人員在作業(yè)過程中,應(yīng)集中精力正確操作,注意
機(jī)械工況,不得擅自離開工作崗位或?qū)C(jī)械交給其他無證人員操
作。
4.2水泥土攪拌樁地基
4.2.1本節(jié)適用于正常固結(jié)的淤泥與淤泥質(zhì)土、粉土、素填土、
粘性土以及無流動地下水的飽和松散砂土等地基加固處理施工和
質(zhì)量檢查驗(yàn)收。
Ⅰ施工要點(diǎn)
4.2.2水泥土攪拌樁地基施工前應(yīng)根據(jù)設(shè)計(jì)進(jìn)行工藝性試成樁,
數(shù)量不少于3根,多軸攪拌施工不得少于3組。應(yīng)對工藝試樁的
質(zhì)量進(jìn)行檢驗(yàn),確定施工參數(shù)。
4.2.3攪拌樁施工時(shí),停漿(灰)不宜小于樁頂設(shè)計(jì)標(biāo)高500mm;
在開挖基坑時(shí),應(yīng)將樁頂以上土層及樁頂施工質(zhì)量較差的樁段,
采用人工挖除。
4.2.4水泥土攪拌樁地基施工主要步驟應(yīng)為:
1攪拌機(jī)械就位,調(diào)平;
2預(yù)攪拌(鉆)下沉至設(shè)計(jì)加固深度;
3邊噴漿(粉)、邊攪拌提升直至預(yù)定的停漿(灰)面;
4垂直攪拌下沉至設(shè)計(jì)加固深度,必須確保全樁長上下至少
重復(fù)攪拌一次;
5根據(jù)設(shè)計(jì)要求,將噴漿(粉)或攪拌頭提升至預(yù)定的停漿
(灰)面;
6關(guān)閉攪拌機(jī)械。
4.2.5施工設(shè)備及工藝分為濕法和干法,具體應(yīng)執(zhí)行《建筑地
基處理技術(shù)規(guī)范》(JGJ79)規(guī)定。
Ⅱ主控項(xiàng)目
4.2.6進(jìn)行強(qiáng)度檢驗(yàn)時(shí),如設(shè)計(jì)無特殊要求,對承重水泥土的攪
6
拌樁應(yīng)取90d后的試件。
4.2.7水泥土攪拌樁復(fù)合地基承載力檢驗(yàn)應(yīng)采用復(fù)合地基靜載
荷試驗(yàn)和單樁靜載荷試驗(yàn),靜載荷試驗(yàn)宜在成樁28d后進(jìn)行,驗(yàn)
收檢驗(yàn)數(shù)量不少于總樁數(shù)的1%,復(fù)合地基靜載荷試驗(yàn)數(shù)量不少于
3臺(多軸攪拌為3組)。
4.2.8水泥土攪拌樁用的水泥及外摻劑應(yīng)符合設(shè)計(jì)和產(chǎn)品質(zhì)量
要求;水泥等材料用量應(yīng)符合配合比要求。
Ⅲ一般項(xiàng)目
4.2.9水泥土攪拌樁地基質(zhì)量檢驗(yàn)一般要求應(yīng)符合《建筑地基基
礎(chǔ)工程施工質(zhì)量驗(yàn)收規(guī)范》(GB50202-2002)表4.11.5的規(guī)定。
4.3旋噴樁復(fù)合地基
4.3.1本節(jié)適用于淤泥、淤泥質(zhì)土、流塑、軟塑或可塑粘性土、
粘土、砂土,素填土和砂石土等地基加固處理施工和質(zhì)量檢查驗(yàn)
收。
對地下水流速較大的地基,應(yīng)根據(jù)現(xiàn)場試驗(yàn)結(jié)果確定其適用
性。
Ⅰ施工要點(diǎn)
4.3.2旋噴樁的施工參數(shù)及工藝應(yīng)根據(jù)土質(zhì)條件、加固要求,通
過試驗(yàn)或根據(jù)工程檢驗(yàn)確定,并在施工中嚴(yán)格加以控制。
4.3.3單管法及雙管法的高壓水泥漿和三管法高壓水的壓力應(yīng)
大于20MPa,流量應(yīng)大于30L/min,氣流壓力宜大于0.7MPa,
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