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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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