Recommendations on Piling (EA Pfähle)

The "Piling" working group AK 2.1 of the German Society for Geotechnics (DGGT) consists of about 20 experts from science, industry, construction administration and client organisations and has the same members as the standards committee "Piling" of the NABau.

• Members of the AK 2.1 Piling Committee of the German Geotechnical Society VPreface of the English Version of the Recommendations of the Piling Committee of the German Geotechnical Society VIIPreface of the 2nd German edition IX1 Introduction to the Recommendations and their Application Principles 11.1 National and International Regulations for Piling Works 11.2 Types of Analysis and Limit States using the Partial Safety Factor Approach 21.3 Planning and Testing Pile Foundations 72 Pile Systems 92.1 Overview and Classification into Pile Systems 92.2 Pile Construction 122.3 Foundation elements similar to piles 253 Pile Foundation Design and Analysis Principles 273.1 Pile Foundation Systems 273.2 Geotechnical Investigations for Pile Foundations 323.3 Classification of Soils for Pile Foundations 393.4 Pile Systems for the Execution of Excavations and for Retaining Structures 403.5 Piles for the Stabilisation of Slopes 433.6 Use of sacrificial Linings 444 Actions and Effects 474.1 Introduction 474.2 Pile Foundation Loads Imposed by the Structure 484.3 Installation Effects on Piles 484.4 Negative Skin Friction 494.5 Lateral Pressure 544.6 Additional Effects on Raking Piles Resulting from Ground Deformations 624.7 Foundation Piles in Slopes and at Retaining Structures 655 Bearing Capacity and Resistances of Single Piles 695.1 General 695.2 Determining Pile Resistances from Static Pile Load Tests 705.3 Determining Pile Resistances from Dynamic Pile Load Tests 725.4 Axial Pile Resistances Based on Empirical Data 755.5 Bored Piles with Enlarged Bases 1135.6 Additional Methods Using the EC 7-1 and EC 7-2 Handbooks 1145.7 Pile Resistances for Grouted Shafts and Bases. 1145.8 Resistances of Piles Under Lateral Loads 1155.9 Pile Resistances Under Dynamic Actions 1165.10 Internal Pile Capacity 1165.11 Numerical Analyses of the Capacity of Single Piles 1196 Stability Analyses 1216.1 Introduction 1216.2 Limit State Equations 1216.3 Bearing Capacity Analysis 1226.4 Serviceability Analysies 1256.5 Pile Groups and Grillages 1276.6 Piled Raft Foundations 1277 Grillage Analysis 1297.1 AnalysisModels and Procedures 1297.2 Non-linear Pile Bearing Behaviour in Grillage Analysis 1308 Analysis and Verification of Pile Groups 1318.1 Actions and Effects 1318.2 Bearing Capacity and Resistances of Pile Groups 1338.3 Bearing Capacity Analyses 1528.4 Serviceability Analyses 1568.5 Higher Accuracy Pile Group Analyses 1579 Static Pile Load Tests 1599.1 Introduction 1599.2 Static Axial Pile Load Tests 1599.3 Static Lateral Load Test 1829.4 Static Axial Load Tests on Micropiles (Composite Piles) 19410 Dynamic pile load tests 20910.1 Introduction. 20910.2 Range of Application and General Conditions 20910.3 Theoretical Principles 21010.4 Description of Testing Methods, Test Planning and Execution 21310.5 Evaluation and Interpretation of Dynamic Load Tests 22510.6 Calibrating Dynamic Pile Load Tests 23110.7 Qualifications of Testing Institutes and Personnel 23410.8 Documentation and Reporting 23410.9 Testing Driving Rig Suitability 23611 Quality Assurance during Pile Execution 23911.1 Introduction. 23911.2 Bored Piles 23911.3 Displacement Piles 25311.4 Grouted Micropiles (Composite Piles). 25512 Pile Integrity Testing 25912.1 Purpose and Procedures 25912.2 Low Strain Integrity Tests 26012.3 Ultrasonic Integrity Testing 27012.4 Testing Piles by Core Drilling. 27912.5 Other Specific TestingMethods 28213 Bearing Capacity and Analyses of Piles under Cyclic, Dynamic and Impact Actions 28513.1 Introduction 28513.2 Cyclic, Dynamic and Impact Actions 28613.3 Supplementary Geotechnical Investigations 29213.4 Bearing Behaviour and Resistances under Cyclic Loads 29413.5 Bearing Behaviour and Resistances under Dynamic Loads 29913.6 Bearing Behaviour and Resistances under Impact Loads 30013.7 Stability Analyses of Cyclic, Axially Loaded Piles 30113.8 Stability Analyses of Cyclical, Laterally Loaded Piles 30413.9 Stability Analyses of Dynamic or Impact-loaded Piles 306Annex A Terms, Partial Safety Factors and Principles for Analysis 307Annex B Example Calculations for Pile Resistance Analysis and Verifications 331Annex C Examples of Dynamic Pile Load Testing and Integrity Testing 395Annex D Analysis Methods and Examples for Cyclically Loaded Piles (Informative) 417Literatur 459List of Advertisers 469

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