1st Edition
Rapid Load Testing on Piles Interpretation Guidelines
Preface
Summary
1 Introduction and scope of the guidelines
2 Test execution and test results
3 General overview of interpretation methods
3.1 Introduction
3.2 Relevant aspects for the interpretation
3.2.1 Inertia effects
3.2.2 Rate effects
3.3 Description of interpretation methods
3.3.1 General
3.3.2 Choice of method
3.3.3 Short description of the Unloading Point Method
3.3.4 Short description of the Sheffield method
3.3.5 Methods with more degrees of freedom
3.4 Safety approach
4 Theoretical aspects
4.1 Introduction
4.2 The inverse problem
4.3 Dynamic effects
4.3.1 Inertial effects for closed piles
4.3.2 Inertial effects for open ended pipe piles
4.3.3 Damping effects
4.4 Rate effects
4.4.1 General meaning of rate effect
4.4.2 Measuring and modelling the rate effect
4.4.3 Constitutive rate effect in dry sand
4.4.4 Rate effect in clay
4.4.5 Pore water pressures in saturated sand
4.5 Combined effects
5 Interpretation methods
5.1 Introduction
5.2 Unloading point method
5.2.1 Definition of the method
5.2.2 Measurement / estimation of required parameters
5.2.3 Example of the application
5.3 Method developed at Sheffield
5.3.1 Definition of the method
5.3.2 Measurement or estimation of required parameters
6 Safety approach
6.1 Method
6.2 Partial factors
7 Special aspects
7.1 Open-ended piles
7.2 Influence of pile installation
7.3 Layered soils
7.4 Other aspects
8 Symbols and definitions
8.1 Symbols
8.2 Definitions
Biography
Paul Hölscher is a specialist in the application of soil dynamics to practical problems in urban engineering. He obtained his doctorate from Delft University of Technology on the dynamic behaviour of dry and saturated soil. In his 25-year career he worked at Deltares on both fundamental research as well as practical problems for geotechnical engineers.
Henk Brassinga is senior consultant of the engineering division of the city of Rotterdam. He has been involved in many large projects in Rotterdam Harbour.
Mike Brown is currently a lecturer at the University of Dundee. He obtained his doctorate from the University of Sheffield on the rapid pile testing for piles in clay.
Peter Middendorp is director of Allnamics. He contributed to the development of pile driving analysis and the Statnamic test method. He created the basics of unloading point method and has been involved in many large rapid pile tests.
Maarten Profittlich is a consultant at Fugro. He is involved in design and testing of foundation piles worldwide. Fugro owns one of the biggest Statnamic devices world wide.
Frits van Tol is a professor of Foundation Engineering at Delft University of Technology and expertise manager at Deltares.
