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.
Foreword 1
1. General Provision 3
2. Terms and Symbols 4
2.1 Terms 4
2.2 Symbols 6
3. Basic Design Provisions 10
3.1 General Provision 10
3.2 Basic Documents 13
3.3 Type Selection and Arrangement of Pile 16
3.4 Pile Foundation in Exceptional Conditions 19
3.5 Provisions on Durability 23
4. Pile Foundation Structure 24
4.1 Foundation Pile Structure 24
Envelopment 29
Single-sided Corrosion Rate (mm/y) 29
Above ground 29
Without corrosive gas or corrosive volatile media 29
0.05~0.1 29
Below Ground 29
Above the water level 29
0.05 29
Below the water level 29
0.03 29
Water-level fluctuation area 29
0.1~0.3 29
4.2 Cushion Cap Structure 29
5 Pile foundation calculations 33
5.1 Calculation for pile top acting effect 33
5.2 Calculation for vertical bearing capacity of piled foundation 35
5.3 Vertical ultimate bearing pressure of a single pile 38
5.4 Check up for vertical bearing capacity of the piled foundation under special conditions 53
5.5 Calculation for piled foundation settlement 62
5.6 Composite foundation with settlement-reducing piles of soft soil foundation 70
5.7 Calculation for level bearing capacity and displacement of piled foundation 73
5.8 Calculation for bearing capacity and fracture control of pile shaft 80
5.9 Pile cap calculation 87
6. Filling Pile Construction 101
6.1 Preparations for Construction 101
6.2 General Provisions 102
6.3 Slurry Encasing Pore-forming Filling Pile 105
6.4 Long Bolt Cast In-Situ Bored Pile 112
6.5 Filling Piles with Sink-pipe and Inner Ramming Filling Piles with Sink-pipe 113
6.6 Dry-work Pore-forming Filling Pile 118
6.7 Post Grouting for Cast-in-situ Pile 122
7. Concrete premolded pile and steel pile construction 125
7.1 Concrete Premolded Pile Manufacture 125
7.2 Hoisting, Transportation and Storage of Concrete Premolded Pile 127
7.3 Concrete Premolded Pile Extension 129
7.4 Hammering pile-Sinking 131
7.5 Static Pressure Pile-Sinking 135
7.6 Steel pile (steel circular pile, pile of H type and other special steel piles) construction 138
8 Pile cap Construction 141
8.1 Pit Excavation and Backfilling 141
8.2 Steel Bar and Concrete Construction 142
9. Quality Inspection and Acceptance of the Pile Foundation Construction 143
9.1 General Requirements 143
9.2 Inspection before Construction 143
9.3 Construction Inspection 144
9.4 Inspection after Construction 144
9.5 Acceptance Materials of Foundation Pile and Pile Cap Project 145
Appendix A 148
Appendix B 155
Appendix C 161
Appendix D 187
Appendix E 202
Appendix F 211
Stress Effect Coefficient through Mindlin Stress Formulas Considering Pile Diameter Effect 211
Appendix G 266
Calculation for strip pile foundation cushion cap beam under brick wall according to inversed beam on elastic foundation 266
Appendix H 270
Weight selection of hammer for stamping sinking pile 270
Wording Explanation 272