Introductory Chapter

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Transcription:

Introductory Chapter

Asian Concrete Model Code 2014, Introductory Chapter TABLE OF CONTENTS DEFINITIONS...3 1 INTRODUCTION... 8 1.1 SCOPE... 8 1.2 DOCUMENT ORGANISATION... 8 1.3 GENERAL PRINCIPLES... 8 1.3.1 Purpose... 8 1.3.2 Design Procedures... 8 1.3.3 Dimensioning and Detailing... 9 1.3.4 Quality Control and Assurance... 9 1.3.5 Environmental Consideration... 9 1.4 PERFORMANCE REQUIREMENTS... 9 1.4.1 Safety... 9 1.4.2 Serviceability... 9 1.4.3 Restorability... 9 1.5 MATERIALS... 9 1.5.1 General... 9 1.5.2 Properties... 10 1.5.3 Models... 10 2 GENERAL PRINCIPLES FOR DESIGN... 10 2.1 SCOPE... 10 2.2 ACTIONS... 10 2.2.1 General... 10 2.2.2 Actions in Normal Use... 10 2.2.3 Wind Actions... 10 2.2.4 Seismic Actions... 11 2.2.5 Environmental Actions... 11 2.2.6 Fire Actions... 11 2.3 ANALYSIS... 11 2.3.1 General... 11 2.3.2 Analytical Methods... 11 2.3.3 Models for Analysis... 11 2.4 VERIFICATION and evaluation... 11 2.4.1 General... 11 2.4.2 Performance Indices and Examination of Performance... 12 2.4.3 Evaluation of Performance... 12 2.5 RECORDS... 12 3 GENERAL PRINCIPLES FOR CONSTRUCTION... 12 3.1 GENERAL... 12 3.2 WORKMANSHIP... 12 3.3 QUALITY CONTROL AND ASSURANCE... 13 1

Asian Concrete Model Code 2014, Introductory Chapter 3.4 RECORDS... 13 4 GENERAL PRNCIPLES FOR MAINTENANCE... 13 4.1 GENERAL... 13 4.2 BASIS FOR MAINTENANCE... 13 4.3 INSPECTION... 13 4.4 DETERIORATION MECHANISMS AND PREDICTION... 13 4.5 EVALUATION AND DECISION MAKING... 13 4.6 REMEDIAL ACTION... 14 4.7 RECORDS... 14 2

Part I Design

Asian Concrete Model Code 2014, Part I - Design TABLE OF CONTENTS 1 DESIGN FOR ACTIONS IN NORMAL USE... 18 1.1 GENERAL... 18 1.1.1 Design Procedures... 18 1.1.2 Dimensioning and Detailing... 18 1.1.3 Quality Control and Assurance... 18 1.1.4 Environmental Consideration... 18 1.2 REQUIREMENTS... 18 1.2.1 Safety... 18 1.2.2 Serviceability... 19 1.2.3 Restorability... 19 1.3 MATERIALS... 19 1.3.1 General... 19 1.3.2 Material Properties... 19 1.3.3 Material Models... 19 1.4 ACTIONS... 20 1.4.1 General... 21 1.4.2 Actions in Normal Use... 21 1.4.3 Wind Actions... 21 1.4.4 Seismic Actions... 21 1.4.5 Environmental Actions... 21 1.4.6 Fire Actions... 21 1.5 ANALYSIS... 21 1.5.1 General... 21 1.5.2 Analytical Methods... 22 1.5.3 Models for Analysis of Structural Components... 22 1.6 VERIFICATION OF PERFORMANCE... 22 1.6.1 General... 22 1.6.2 Serviceability... 22 1.6.3 Restorability... 23 1.6.4 Safety... 24 1.7 EVALUATION OF PERFORMANCE... 25 1.7.1 General... 25 1.7.2 Evaluation Method... 25 2 DESIGN FOR WIND ACTIONS... 26 2.1 GENERAL... 26 2.1.1 Scope... 26 2.1.2 Determination of Wind Actions... 26 2.2 REQUIREMENTS... 26 2.3 MATERIALS... 26 2.4 ACTIONS... 26 15

Asian Concrete Model Code 2014, Part I - Design 2.5 ANALYSIS... 27 2.5.1 Wind Load Evaluation... 27 2.5.2 Wind Pressures and Loads... 27 2.5.3 Load Combinations... 27 2.6 VERIFICATION OF PERFORMANCE... 27 2.6.1 General... 27 2.6.2 Serviceability... 27 2.6.3 Restorability... 28 2.6.4 Safety... 28 2.7 EVALUATION OF PERFORMANCE... 28 2.7.1 General... 28 2.7.2 Evaluation Method... 28 3 DESIGN FOR SEISMIC ACTIONS... 28 3.1 GENERAL... 28 3.1.1 Scope... 28 3.1.2 Basis of Design... 28 3.2 REQUIREMENTS... 29 3.2.1 Performance Index... 29 3.2.2 Inherent or Possessed Performance Index... 29 3.2.3 Required Performance Index... 29 3.2.4 Verification of Seismic Performance... 29 3.2.5 Evaluation of Seismic Performance Level... 29 3.3 MATERIALS... 29 3.4 ACTIONS... 29 3.4.1 Levels of Earthquake... 29 3.5 ANALYSIS... 30 3.5.1 General... 30 3.5.2 Analytical Methods... 30 3.6 VERIFICATION OF PERFORMANCE... 31 3.6.1 Serviceability... 31 3.6.2 Restorability... 31 3.6.3 Safety... 32 3.7 EVALUATION OF PERFORMANCE... 32 3.7.1 General... 32 3.7.2 Evaluation Method... 32 4 DESIGN FOR ENVIRONMENTAL ACTIONS... 32 4.1 GENERAL... 32 4.2 REQUIREMENTS... 32 4.2.1 General... 32 4.2.2 Durability Grade... 33 4.2.3 Design Service Life... 33 4.3 MATERIALS... 33 16

Asian Concrete Model Code 2014, Part I - Design 4.3.1 General... 33 4.3.2 Material Models... 33 4.4 ACTIONS... 34 4.4.1 General... 34 4.4.2 Chloride Induced Reinforcement Corrosion... 34 4.4.3 Carbonation... 34 4.4.4 Frost Damage... 34 4.4.5 Concrete Corrosion Due to Chemical Attack... 34 4.4.6 Other Considerations... 34 4.5 ANALYSIS... 34 4.5.1 General... 34 4.5.2 Deterioration Process... 34 4.5.3 Long-Term Performance... 35 4.6 VERIFICATION OF PERFORMANCE... 35 4.6.1 General... 35 4.6.2 Long-Term Performance... 36 4.6.3 Performance under Multiple Actions from the Environment... 36 4.7 EVALUATION OF PERFORMANCE... 36 5 DESIGN FOR FIRE ACTIONS... 36 5.1 GENERAL... 36 5.1.1 Scope... 36 5.1.2 Determination of Fire Actions... 36 5.2 REQUIREMENTS... 37 5.3 MATERIALS... 37 5.4 ACTIONS... 37 5.4.1 Small Fires... 37 5.4.2 Moderate Fires... 38 5.4.3 Severe Fires... 38 5.5 ANALYSIS... 38 5.5.1 Fire Load Evaluation... 38 5.5.2 Factors for Burning Behavior... 39 5.5.3 Combination with Other Design Actions... 39 5.6 VERIFICATION OF PERFORMANCE... 39 5.6.1 General... 39 5.6.2 Serviceability... 39 5.6.3 Restorability... 39 5.6.4 Safety... 40 5.7 EVALUATION OF PERFORMANCE... 40 5.7.1 General... 40 5.7.2 Methodology... 40 17

Part II Materials and Construction

Asian Concrete Model Code 2014, Part II - Materials and Construction TABLE OF CONTENTS 1 SCOPE... 43 2 ESSENTIAL REQUIREMENTS... 43 2.1 GENERAL... 43 2.2 MATERIALS... 43 2.3 WORKMANSHIP... 43 2.4 QUALITY CONTROL AND ASSURANCE... 43 2.5 RECORDS... 43 3 FORMWORK... 43 3.1 SCOPE... 43 3.2 BASIC REQUIREMENTS... 44 3.3 MATERIALS... 44 3.4 DESIGN... 44 3.4.1 Loads... 45 3.4.2 Deformations... 46 3.5 WORKMANSHIP... 46 3.5.1 Erection of Formwork... 46 3.5.2 Formwork Removal... 46 3.6 QUALITY CONTROL AND ASSURANCE... 46 3.7 RECORDS... 47 4 REINFORCEMENT... 47 4.1 SCOPE... 47 4.2 BASIC REQUIREMENTS... 47 4.3 MATERIALS... 47 4.3.1 General... 47 4.3.2 Material Properties... 47 4.4 WORKMANSHIP... 47 4.4.1 Transportation and Storage... 47 4.4.2 Fabrication... 48 4.4.3 Bar Development... 48 4.4.4 Laps and Joints... 48 4.4.5 Placing... 49 4.5 SURFACE CONDITION... 49 4.6 QUALITY CONTROL AND ASSURANCE... 49 4.7 RECORDS... 50 5 CONCRETE... 50 5.1 SCOPE... 50 5.2 BASIC REQUIREMENTS... 50 5.2.1 Quality... 50 5.2.2 Workmanship... 53 5.3 MATERIALS... 53 5.3.1 Cement... 53 41

Asian Concrete Model Code 2014, Part II - Materials and Construction 5.3.2 Aggregates... 54 5.3.3 Admixtures... 54 5.3.4 Mixing Water... 55 5.3.5 Mix Proportions... 55 5.4 WORKMANSHIP... 56 5.4.1 Batching and Mixing... 56 5.4.2 Delivery... 56 5.4.3 Transporting... 56 5.4.4 Placing... 56 5.4.5 Compaction... 57 5.4.6 Surface Finishing... 57 5.4.7 Curing... 57 5.5 QUALITY CONTROL AND ASSURANCE... 58 5.5.1 General... 58 5.5.2 At Batching and Mixing Plant... 58 5.5.3 On Construction Site... 58 5.5.4 Inspection of Hardened Concrete... 58 5.6 RECORDS... 59 6 PRESTRESSED CONCRETE... 59 6.1 SCOPE... 59 6.2 BASIC REQUIREMENTS... 59 6.3 MATERIALS... 59 6.3.1 Concrete... 60 6.3.2 Prestressing Steel... 60 6.3.3 Anchorages and Coupling... 60 6.3.4 Reinforcement... 61 6.3.5 Sheaths... 61 6.3.6 Grout... 61 6.3.7 Coating Materials for Uubonded Tendons... 61 6.4 WORKMANSHIP... 61 6.4.1 Tendon Placing... 61 6.4.2 Formwork and Shoring... 62 6.4.3 Concrete Placing... 62 6.4.4 Curing of Concrete... 62 6.4.5 Stressing Operation... 62 6.4.6 Formwork Removal... 63 6.4.7 Grouting... 63 6.5 QUALITY CONTROL AND INSPECTION... 63 6.5.1 During Concrete Placing... 64 6.5.2 During Transfer of Prestress... 64 6.6 RECORDS... 64 42

Part III Maintenance

Asian Concrete Model Code 2014, Part III - Maintenance TABLE OF CONTENTS 1 SCOPE... 67 2 BASIS FOR MAINTENANCE... 67 2.1 GENERAL... 67 2.2 OVERALL STRATEGY... 68 2.3 CLASSIFICATION OF MAINTENANCE ACTIONS... 68 2.4 MAINTENANCE RECORD... 70 3 ASSESSMENT... 70 3.1 GENERAL... 70 3.2 CLASSIFICATION OF ASSESSMENT... 70 3.2.1 General... 70 3.2.2 Level of Assessment... 70 3.2.3 Initial Assessment... 71 3.2.4 Periodic Assessment... 71 3.2.5 Extraordinary Assessment... 72 3.3 INVESTIGATION... 73 3.3.1 General... 73 3.3.2 Items and Tools for Investigation... 73 3.3.3 Locations of Investigation... 73 3.3.4 Frequency of Investigation... 73 3.3.5 Monitoring... 73 3.4 DETERIORATION MECHANISMS AND PREDICTION... 74 3.4.1 General... 74 3.4.2 Identification of Deterioration Mechanism... 74 3.4.3 Deterioration Factors... 74 3.4.4 Determination of Deterioration Level and Rate... 74 3.5 EVALUATION AND DECISION MAKING... 75 3.5.1 General... 75 3.5.2 Threshold Level... 75 3.5.3 Evaluation of Assessment Results... 75 3.5.4 Comparison and Final Decision... 75 4 REMEDIAL ACTION... 76 4.1 GENERAL... 76 4.2 SELECTION OF REMEDIAL ACTION... 76 4.3 REPAIR... 77 4.3.1 Definition... 77 4.3.2 Preparation... 77 4.3.3 Execution... 77 4.3.4 Methods and Materials... 77 4.4 STRENGTHENING... 78 4.4.1 General... 78 65

Asian Concrete Model Code 2014, Part III - Maintenance 4.4.2 Preparation... 78 4.4.3 Execution... 78 4.4.4 Methods and Materials... 78 4.4.3 Beautification... 79 5 RECORD... 79 5.1 GENERAL... 79 5.2 PRESERVATION... 79 5.3 METHOD AND ITEM OF RECORDING... 79 66

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