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Position: Chinese Standard in English/JGJ 94-2008
JGJ 94-2008   Technical Code for Building Pile Foundations (English Version)
Standard No.: JGJ 94-2008 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 70000 words Price(USD):140.0 remind me the price change

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Implemented on:2008-10-1 Delivery: via email in 1 business day
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Standard No.: JGJ 94-2008
English Name: Technical Code for Building Pile Foundations
Chinese Name: 建筑桩基技术规范
Chinese Classification: P22    Subgrade and foundation engineering
Professional Classification: JG    Professional Standard - Building
Issued by: Ministry of Construction
Issued on: 2008-04-22
Implemented on: 2008-10-1
Status: valid
Superseding:JGJ 94-1994 Technicsl Code for Building Pile Foundations
Language: English
File Format: PDF
Word Count: 70000 words
Price(USD): 140.0
Delivery: via email in 1 business day
1. General Provision 1.0.1 The code is established to enable pile foundation engineering and construction to comply with national technical economy politics, and to be of safety and usability, state-of-art technology, economic feasibility, quality guaranteeing and environment protection. 1.0.2 The code is applicable to design, construction and acceptance for pile foundations of all sorts of buildings (including structures). 1.0.3 For engineering and construction of pile foundation, engineering geological and hydrogeological conditions, topside structure type, functions of use, load characteristics, and construction load condition and envelopment shall be considered comprehensively; and local experiences and conceptual design shall be highly valued, the design shall adapt to local conditions, and pile type, pile-making process and cushion cap type shall be adopted reasonably to optimize the pile arrangement and save the resources; construction quality control and management shall be reinforced. 1.0.4 Besides this code, the engineering and construction of pile foundation shall comply with provisions of relative current standards. 2. Terms and Symbols 2.1 Terms 2.1.1 Pile Foundation It is referred to a foundation composed of pile arranged in rock-soil and cushion cap braced with pile top, or an individual pile foundation formed through the direct connection of column and pile. 2.1.2 Composite Piled Foundation It is referred to the pile foundation loaded by the foundation pile and foundation soil under the cushion cap. 2.1.3 Foundation Pile It is suffered to an individual pile in the pile foundation. 2.1.4 Composite Foundation Pile It is referred to the composite bearing foundation pile composed by an individual pile and foundation soil under the cushion cap of the area the individual pile corresponds to. 2.1.5 Composite Foundation with Settlement-reducing Piles It is referred to the composite piled foundation composed of reducing friction-type pile to decrease settlement in the cased of basic satisfied requirement of soft soil natural foundation bearing capacity. 2.1.6 Ultimate Vertical Bearing Capacity of a Single Pile It is referred to the peak load that an individual pile is close to the collapse condition or appears the deformation that is not suitable to keep bearing under the vertical load or, and this value depends on the supporting resistance of soil on the pile and the bearing capacity of the pile foundation. 2.1.7 Ultimate Shaft Resistance It is referred to the rock-soil resistance generated by the lateral surface of the pile foundation under the critical load of pile top acting. 2.1.8 Ultimate Tip Resistance It is refereed to the rock-soil resistance generated by the pile tip under the critical load of pile top acting. 2.1.9 Characteristic Value of the Vertical Bearing Capacity of a Single Pile It is referred to the bearing capacity value that the ultimate vertical bearing capacity of a single pile is divided by the safety factor. 2.1.10 Optimized Design of Pile Foundation Stiffness to Reduce Differential Settlement It is referred to the design method that, according to the topside structure type, load and stratigraphic distribution, the bearing rigidity distribution of the foundation pile is changed through the adjustments of pile diameter, pile length and pile spacing to make building settlement uniform and reduce the cushion cap internal force. 2.1.11 Pile Cap Coefficient It is referred to the exertion rate of the bearing capacity of the foundation soil below the cushion cap under the vertical load. 2.1.12 Negative Skin Friction, or Negative Shaft Resistance It is reoffered to the downward frictional resistance on pile surface caused by that the pile-periphery soil appears the settlement larger than the foundation pile because of the pile-periphery soil self consolidation, collapse and ground load acting. 2.1.13 Down Drag It is referred to the sum of negative shaft resistance acted on higher than the neutral point of an individual pile. 2.1.14 Plugging Effect It is referred to the influence on the tip resistance exertion, which is caused by the soil plug formed by soil that flow over into the tube during the pile-sinking of open hollow pile. 2.1.15 Post Grouting for Cast-in-situ Pile It is referred to that, after filling piling, cement grout is poured through grouting conduits pre-arranged in the pile foundation, pile tips connected with the conduits and pile-side grouting valve to reinforce pile tip and pile-side earth mass (including sediment and clay coating), and to improve the bearing capacity of individual pile and decrease the settlement. 2.1.16 Equivalent Settlement Coefficient for Calculating Settlement of Piled Foundations It is referred to the ratio of the settling volume WM of the clustered piles foundation in elastic semi-infinite body calculated through Mindlin, and the settling volume WB of the equivalent pier foundation calculated through Boussinesq, which used to reflect the influence of the stress distribution calculated through Mindlin to the calculated sediment.
Foreword 1. General Provision 2. Terms and Symbols 2.1 Terms 2.2 Symbols 3. Basic Design Provisions 3.1 General Provision 3.2 Basic Documents 3.3 Type Selection and Arrangement of Pile 3.4 Pile Foundation in Exceptional Conditions 3.5 Provisions on Durability 4. Pile Foundation Structure 4.1 Foundation Pile Structure Envelopment Single-sided Corrosion Rate (mm/y) Above ground Without corrosive gas or corrosive volatile media 0.05~ Below Ground Above the water level Below the water level Water-level fluctuation area 0.1~ 4.2 Cushion Cap Structure 5 Pile foundation calculations 5.1 Calculation for pile top acting effect 5.2 Calculation for vertical bearing capacity of piled foundation 5.3 Vertical ultimate bearing pressure of a single pile 5.4 Check up for vertical bearing capacity of the piled foundation under special conditions 5.5 Calculation for piled foundation settlement 5.6 Composite foundation with settlement-reducing piles of soft soil foundation 5.7 Calculation for level bearing capacity and displacement of piled foundation 5.8 Calculation for bearing capacity and fracture control of pile shaft 5.9 Pile cap calculation 6. Filling Pile Construction 6.1 Preparations for Construction 6.2 General Provisions 6.3 Slurry Encasing Pore-forming Filling Pile 6.4 Long Bolt Cast In-Situ Bored Pile 6.5 Filling Piles with Sink-pipe and Inner Ramming Filling Piles with Sink-pipe 6.6 Dry-work Pore-forming Filling Pile 6.7 Post Grouting for Cast-in-situ Pile 7. Concrete premolded pile and steel pile construction 7.1 Concrete Premolded Pile Manufacture 7.2 Hoisting, Transportation and Storage of Concrete Premolded Pile 7.3 Concrete Premolded Pile Extension 7.4 Hammering pile-Sinking 7.5 Static Pressure Pile-Sinking 7.6 Steel pile (steel circular pile, pile of H type and other special steel piles) construction 8 Pile cap Construction 8.1 Pit Excavation and Backfilling 8.2 Steel Bar and Concrete Construction 9. Quality Inspection and Acceptance of the Pile Foundation Construction 9.1 General Requirements 9.2 Inspection before Construction 9.3 Construction Inspection 9.4 Inspection after Construction 9.5 Acceptance Materials of Foundation Pile and Pile Cap Project Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Stress Effect Coefficient through Mindlin Stress Formulas Considering Pile Diameter Effect Appendix G Calculation for strip pile foundation cushion cap beam under brick wall according to inversed beam on elastic foundation Appendix H Weight selection of hammer for stamping sinking pile Wording Explanation
JGJ 94-2008 is referred in:
* JGJ 6-2011 Technical code for tall building raft foundations and box foundations
* JGJ/T 225-2010 Technical specification for large-diameter belled cast-in-place pile foundation
* JGJ 79-2012 Technical code for ground treatment of buildings
* GB 50051-2013 Code for design of chimneys
* GB 50548-2010 Code for Investigation and Surveying of 330kV~750kV Overhead Transmission Line
* JGJ 3-2010 Technical Specification for Concrete Structures of Tall Building
* JGJ 106-2014 Technical Code for Testing of Building Foundation Piles
* JGJ 106-2014 Technical Code for Testing of Building Foundation Piles
* JGJ 106-2014 Technical Code for Testing of Building Foundation Piles
* JGJ 79-2012 Technical code for ground treatment of buildings
* GB 50112-2013 Technical code for building in expansive soil regions
* GB 50051-2013 Code for design of chimneys
* JGJ 120-2012 Technical specification for retaining and protection of building foundation excavations
* JGJ 6-2011 Technical code for tall building raft foundations and box foundations
* JGJ 3-2010 Technical Specification for Concrete Structures of Tall Building
* JGJ/T 225-2010 Technical specification for large-diameter belled cast-in-place pile foundation
* GB 50548-2010 Code for Investigation and Surveying of 330kV~750kV Overhead Transmission Line
* JGJ 106-2014 Technical Code for Testing of Building Foundation Piles
* JGJ 106-2014 Technical Code for Testing of Building Foundation Piles
* GB 50112-2013 Technical code for building in expansive soil regions
* GB 50548-2010 Code for Investigation and Surveying of 330kV~750kV Overhead Transmission Line
* GB 50051-2013 Code for design of chimneys
* JGJ 79-2012 Technical code for ground treatment of buildings
* SH/T 3528-2005 Specification for construction and acceptance of steel storage tank subgrade & foundation in petrochemical industry
* DL/T 5074-2006 Technical Code for Investigation of Geotechnical Engineering of Fossil Fuel Power Plant
* 11G101-3 Rules of Ichnographic R.C. Structure Construction and Detail Drawing
* GB/T 50756-2012 Technical Code for Ground Treatment of Steel Tanks
* NB/T 20308-2014 Design code for nuclear safety related plants foundation for pressure water reactor nuclear power plants
*GB 50233-2014 Code for Construction and Acceptance of 110kV~750kV Overhead Transmission Line
*FD 003-2007 Design regulations on subgrade and foundation for wind turbine generator system (Trial)
*GB 51019-2014 Code for design of pipe racks and pipe sleepers in chemical industry
*DBJ 15-92-2013 Technical specification for concrete strutures of tall building
*GB 50265-2022 Standard for pumping station design
*DBJ/T 15-38-2019 Technical code for ground treatment of buildings
*GB 50135-2019 Standard for design of high-rising structures
Code of China
Standard
JGJ 94-2008  Technical Code for Building Pile Foundations (English Version)
Standard No.JGJ 94-2008
Statusvalid
LanguageEnglish
File FormatPDF
Word Count70000 words
Price(USD)140.0
Implemented on2008-10-1
Deliveryvia email in 1 business day
Detail of JGJ 94-2008
Standard No.
JGJ 94-2008
English Name
Technical Code for Building Pile Foundations
Chinese Name
建筑桩基技术规范
Chinese Classification
P22
Professional Classification
JG
ICS Classification
Issued by
Ministry of Construction
Issued on
2008-04-22
Implemented on
2008-10-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
JGJ 94-1994 Technicsl Code for Building Pile Foundations
Language
English
File Format
PDF
Word Count
70000 words
Price(USD)
140.0
Keywords
JGJ 94-2008, JGJ/T 94-2008, JGJT 94-2008, JGJ94-2008, JGJ 94, JGJ94, JGJ/T94-2008, JGJ/T 94, JGJ/T94, JGJT94-2008, JGJT 94, JGJT94
Introduction of JGJ 94-2008
1. General Provision 1.0.1 The code is established to enable pile foundation engineering and construction to comply with national technical economy politics, and to be of safety and usability, state-of-art technology, economic feasibility, quality guaranteeing and environment protection. 1.0.2 The code is applicable to design, construction and acceptance for pile foundations of all sorts of buildings (including structures). 1.0.3 For engineering and construction of pile foundation, engineering geological and hydrogeological conditions, topside structure type, functions of use, load characteristics, and construction load condition and envelopment shall be considered comprehensively; and local experiences and conceptual design shall be highly valued, the design shall adapt to local conditions, and pile type, pile-making process and cushion cap type shall be adopted reasonably to optimize the pile arrangement and save the resources; construction quality control and management shall be reinforced. 1.0.4 Besides this code, the engineering and construction of pile foundation shall comply with provisions of relative current standards. 2. Terms and Symbols 2.1 Terms 2.1.1 Pile Foundation It is referred to a foundation composed of pile arranged in rock-soil and cushion cap braced with pile top, or an individual pile foundation formed through the direct connection of column and pile. 2.1.2 Composite Piled Foundation It is referred to the pile foundation loaded by the foundation pile and foundation soil under the cushion cap. 2.1.3 Foundation Pile It is suffered to an individual pile in the pile foundation. 2.1.4 Composite Foundation Pile It is referred to the composite bearing foundation pile composed by an individual pile and foundation soil under the cushion cap of the area the individual pile corresponds to. 2.1.5 Composite Foundation with Settlement-reducing Piles It is referred to the composite piled foundation composed of reducing friction-type pile to decrease settlement in the cased of basic satisfied requirement of soft soil natural foundation bearing capacity. 2.1.6 Ultimate Vertical Bearing Capacity of a Single Pile It is referred to the peak load that an individual pile is close to the collapse condition or appears the deformation that is not suitable to keep bearing under the vertical load or, and this value depends on the supporting resistance of soil on the pile and the bearing capacity of the pile foundation. 2.1.7 Ultimate Shaft Resistance It is referred to the rock-soil resistance generated by the lateral surface of the pile foundation under the critical load of pile top acting. 2.1.8 Ultimate Tip Resistance It is refereed to the rock-soil resistance generated by the pile tip under the critical load of pile top acting. 2.1.9 Characteristic Value of the Vertical Bearing Capacity of a Single Pile It is referred to the bearing capacity value that the ultimate vertical bearing capacity of a single pile is divided by the safety factor. 2.1.10 Optimized Design of Pile Foundation Stiffness to Reduce Differential Settlement It is referred to the design method that, according to the topside structure type, load and stratigraphic distribution, the bearing rigidity distribution of the foundation pile is changed through the adjustments of pile diameter, pile length and pile spacing to make building settlement uniform and reduce the cushion cap internal force. 2.1.11 Pile Cap Coefficient It is referred to the exertion rate of the bearing capacity of the foundation soil below the cushion cap under the vertical load. 2.1.12 Negative Skin Friction, or Negative Shaft Resistance It is reoffered to the downward frictional resistance on pile surface caused by that the pile-periphery soil appears the settlement larger than the foundation pile because of the pile-periphery soil self consolidation, collapse and ground load acting. 2.1.13 Down Drag It is referred to the sum of negative shaft resistance acted on higher than the neutral point of an individual pile. 2.1.14 Plugging Effect It is referred to the influence on the tip resistance exertion, which is caused by the soil plug formed by soil that flow over into the tube during the pile-sinking of open hollow pile. 2.1.15 Post Grouting for Cast-in-situ Pile It is referred to that, after filling piling, cement grout is poured through grouting conduits pre-arranged in the pile foundation, pile tips connected with the conduits and pile-side grouting valve to reinforce pile tip and pile-side earth mass (including sediment and clay coating), and to improve the bearing capacity of individual pile and decrease the settlement. 2.1.16 Equivalent Settlement Coefficient for Calculating Settlement of Piled Foundations It is referred to the ratio of the settling volume WM of the clustered piles foundation in elastic semi-infinite body calculated through Mindlin, and the settling volume WB of the equivalent pier foundation calculated through Boussinesq, which used to reflect the influence of the stress distribution calculated through Mindlin to the calculated sediment.
Contents of JGJ 94-2008
Foreword 1. General Provision 2. Terms and Symbols 2.1 Terms 2.2 Symbols 3. Basic Design Provisions 3.1 General Provision 3.2 Basic Documents 3.3 Type Selection and Arrangement of Pile 3.4 Pile Foundation in Exceptional Conditions 3.5 Provisions on Durability 4. Pile Foundation Structure 4.1 Foundation Pile Structure Envelopment Single-sided Corrosion Rate (mm/y) Above ground Without corrosive gas or corrosive volatile media 0.05~ Below Ground Above the water level Below the water level Water-level fluctuation area 0.1~ 4.2 Cushion Cap Structure 5 Pile foundation calculations 5.1 Calculation for pile top acting effect 5.2 Calculation for vertical bearing capacity of piled foundation 5.3 Vertical ultimate bearing pressure of a single pile 5.4 Check up for vertical bearing capacity of the piled foundation under special conditions 5.5 Calculation for piled foundation settlement 5.6 Composite foundation with settlement-reducing piles of soft soil foundation 5.7 Calculation for level bearing capacity and displacement of piled foundation 5.8 Calculation for bearing capacity and fracture control of pile shaft 5.9 Pile cap calculation 6. Filling Pile Construction 6.1 Preparations for Construction 6.2 General Provisions 6.3 Slurry Encasing Pore-forming Filling Pile 6.4 Long Bolt Cast In-Situ Bored Pile 6.5 Filling Piles with Sink-pipe and Inner Ramming Filling Piles with Sink-pipe 6.6 Dry-work Pore-forming Filling Pile 6.7 Post Grouting for Cast-in-situ Pile 7. Concrete premolded pile and steel pile construction 7.1 Concrete Premolded Pile Manufacture 7.2 Hoisting, Transportation and Storage of Concrete Premolded Pile 7.3 Concrete Premolded Pile Extension 7.4 Hammering pile-Sinking 7.5 Static Pressure Pile-Sinking 7.6 Steel pile (steel circular pile, pile of H type and other special steel piles) construction 8 Pile cap Construction 8.1 Pit Excavation and Backfilling 8.2 Steel Bar and Concrete Construction 9. Quality Inspection and Acceptance of the Pile Foundation Construction 9.1 General Requirements 9.2 Inspection before Construction 9.3 Construction Inspection 9.4 Inspection after Construction 9.5 Acceptance Materials of Foundation Pile and Pile Cap Project Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Stress Effect Coefficient through Mindlin Stress Formulas Considering Pile Diameter Effect Appendix G Calculation for strip pile foundation cushion cap beam under brick wall according to inversed beam on elastic foundation Appendix H Weight selection of hammer for stamping sinking pile Wording Explanation
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Keywords:
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