STATRAPID: the method of Rapid Pile Load Testing
Pile Load Testing
Allnamics is all about pile testing. With a wide range of testing techniques, Allnamics can test any pile for its integrity, bearing capacity, and stiffness. Being one of the pioneers in this field of pile testing, Allnamics founders have contributed significant knowledge to pile testing. Either Static, Dynamic, or Rapid Load Testing. The latter is one of the innovations of Allnamics founders for pile testing. In 1990 the Statnamic method was developed. Later followed by an alternative Rapid Load Testing: the StatRapid Load Test. That brings the total of testing techniques for bearing capacity to:
- StatRapid Load Testing
- Dynamic Load Testing
- Static Load Testing
- Bi-directional Load Testing
- StatNamic Load Testing
All these test methods can be performed onshore as well as offshore. For small micro piles as well for huge Monopiles.
PDA Pile Driving Analysis
Foundation piles have been installed since… well, since always! Even the Romans knew their pile driving!
That implies Quality Assurance requires measuring during driving PDA (Pile Driving Analysis ) to check the installation process, e.g., pile stresses, blow counts, and hammer performance. Both for impact hammers and vibratory hammers (VDA Vibratory Driving Analysis).
After driving, the bearing capacity will increase in time (aging, set-up). By measuring during a drive, the static pile/soil behavior and its static bearing capacity can be obtained by AllWave-DLT Signal Matching (DLT Dynamic Load Testing).
VDA Vibratory Driving Analysis
When piles are installed using a vibratory hammer instead of an impact hammer, comparable measurements, like with a PDA, can be performed.
During Vibratory Driving Analysis (VDA), all information during installation is monitored, including the performance and behavior of the pile, soil, and vibratory hammer. Monitoring pile stresses to determine fatigue of the pile material, penetration speed, hammer frequency, efficiency, and more, are part of total quality control for piles installed with vibratory hammers. For foundations piles and large diameter monopiles. Onshore and offshore.
SLT – Static Load Testing
Being the basis of all tests, Allnamics performs static tests, both in compression and tension. Vertical, horizontal, or under any slope. Axial or lateral.
Allnamics designed equipment dedicated to this type of test (see Allnamics Quad) to obtain high-quality readings of load and settlements.
The SLT is especially suitable for:
– Piles with relatively small capacity
– To determine design factors for shaft and toe resistance
– To determine load-displacement behavior
– Troubleshooting
DLT – Dynamic Load Testing
The development of dynamic testing started somewhere in the fifties-sixties. In the seventies and eighties of the last century, the Dynamic Load Test became a mature testing method. At that time, offshore constructions were built for exploring oil at locations with, until then, unknown soil conditions. As an alternative to the Static Load Test, the Dynamic equivalent has positioned itself in the row of pile testing methods.
Allnamics’ founders are pioneers in this field. It led to a series of monitoring systems, starting with the FPDS (Foundation Pile Diagnostic System) up to the state-of-the-art Allnamics’ PDR.
The mean reason to perform Dynamic Load Testing is to obtain information about the pile behavior during (static) loading. The dynamic equivalent is much faster and less time-consuming than Static Load Testing.
The application of DLT (internationally also known as PDA or High Strain Dynamic Testing) is especially suitable for the following:
- Piles with high bearing capacities, where it’s hard to mobilize enough static force to load the pile statically up to failure, i.e., offshore piles
- Prefabricated concrete piles, able to resist the high impact stresses of the DLT
- Piles with a homogeneous cross-section along the shaft
- Offshore and nearshore projects
For other piles, other methods are more suitable. For instance, applying DLT to cast in situ concrete piles, bored piles, and CFA’s, the high impact loads lead to (too) high impact stresses with possible damage to the pile. Reduction of the impact load to limit the stresses to the concrete strength leads to a low mobilized bearing capacity. Furthermore, uncertainty in cross-section and concrete quality results in reduced accuracy of the analysis. These piles are preferably tested by Rapid Load Testing, StatNamic or StatRapid, for which the maximum stresses during the test are significantly lower.
RLT – StatRapid Load Testing
Rapid Load Testing combines the benefits of static and dynamic testing. Quick and cost-effective like the Dynamic Load Test, accurate and reliable as the Static Load Test. Rapid Load Testing overcomes the disadvantages of those testing methods: no reaction frame, anchors, or dead weight as is required for the Static Load Test. And no user dependency on the results as in Dynamic Load Testing.
Allnamics can choose to perform Rapid Load Tests with two different types of testing. For test loads up to app 20 MN, StatRapid will be often used. For higher loads, the Statnamic Load Testing method is available. With this test method, loads up to 65 MN, and even up top 150 MN, are possible.
Do you want to know more about Rapid Load Testing? Contact Peter Middendorp at pmiddendorp@allnamics.com
Bi-directional test
The Bi-directional test is an alternative to the Static Load Test for bored concrete piles. A characteristic of this type of pile testing is that the load is applied somewhere halfway in a pile instead of at the top of the pile.
A device, the cell, is cast into the concrete, somewhere halfway or near the pile toe to measure force and settlements at this level. The cell pushes the upper pile part upward, being the counter force for the downward test load on the lower part. After the test, the measured results are used to construct the load-settlement graph comparable to that of a Static Load Test.
The Bi-directional test will be applied for piles with higher capacities, with significant shaft friction, to mobilize enough counter force to mobilize the shaft and toe resistance of the lower part.
Pile Integrity Testing (Sonic Integrity Testing)
The Sonic Integrity Test was developed by the engineers of Allnamics in the sixties and seventies of the last century.
The test determines imperfections in concrete piles: Cracks, changes in cross-sectional area, soil inclusions, voids, and other imperfections.
The Pile Integrity Test or Sonic Integrity Test is the first, fast and rough, check on the quality of cast in situ piles. The method is fast and quick, so all piles can be tested easily.
Sonic Logging
Sonic Logging is performed by lowering sensors in cast-in tubes. By sending a sonic signal through the concrete by the transmitter to the receiver, information about possible defects and concrete area will be obtained.
Sonic Logging is mainly used for bored piles with large diameters and diaphragm walls.
PAPERS AND ARTICLES
Allnamics has made many contributions to international conferences. These publications are available via the Allnamics database. A selection can be found below:
The Subjective Aspect of Dynamic Load Testing
Titel The Subjective Aspect of Dynamic Load Testing Author(s) Verbeek, G. Year 2018 Language English Where 10th Int Stress Wave Conference, San Diego, USA Cite as Verbeek, G., “The Subjective Aspect of Dynamic Load Testing,” Stress Wave Theory and Testing Methods for Deep Foundations: 10th International Conference, ASTM STP1611, P. Bullock, G. Verbeek, S. Paikowsky, […]
What happens in the soil during pile driving? G De Josselin de Jong
Titel What happens in the soil during pile driving? Author(s) G. De Josselin de Jong Year 2022, translation of original Dutch paper published in 1956 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Josselin de Jong, G. de. (2022, September 20). What happens in the soil during pile driving?. 11th […]
More than 80 Years of Experience with the Method of Characteristics – from Graphical Analyses to Advanced Driveability Analyses by Scripts.
Titel More than 80 Years of Experience with the Method of Characteristics – from Graphical Analyses to Advanced Driveability Analyses by Scripts. Author(s) Middendorp, P. Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Middendorp, P. (2022, September 20). More than 80 Years of Experience with the Method of […]
Validity of the Beta Method to determine pile damage
Titel Validity of the Beta Method to determine pile damage Author(s) Verbeek, Bielefeld Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Verbeek, G.E.H., & Bielefeld, M.W. (2022, September 20). Validity of the Beta Method to determine pile damage. 11th International Conference on Stress Wave Theory and Design and […]
Validated Signal Matching to analyze HSDT data
Titel Validated signal matching to analyze HSDT data Author(s) Verbeek, G.E.H.; Bielefeld, M.W.; Moscoso, N. Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Verbeek, G.E.H., Bielefeld, M.W., & Moscoso, N. (2022, September 20). Validated signal matching to analyze HSDT data. 11th International Conference on Stress Wave Theory and Design and […]
Understanding the Trends behind Load-Displacement Results from Rapid Load Tests
Titel Understanding the Trends behind Load-Displacement Results from Rapid Load Tests Author(s) Chew, S.H.; Bielefeld, M.; Chuah, G. Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Chew, S.H., Bielefeld, M., & Chuah, G. (2022, September 20). UNDERSTANDING THE TRENDS OF LOAD-SETTLEMENT CURVES OF RAPID LOAD TESTS. 11th International Conference on […]
The rebirth of traditional SIT interpretation methods to incorporate engineering judgement in present-day data analysis
Titel The rebirth of traditional SIT interpretation methods to incorporate engineering judgement in present day data analysis Author(s) Bielefeld, M; Delft, M. van; Bakker, J Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Bielefeld, M, Delft, M. van, & Bakker, J. (2022, September 20). The rebirth of traditional SITinterpretation methods […]
RLT on prefab concrete piles of wind turbine foundations in tidal sands in the Netherlands
Titel RLT on prefab concrete piles of wind turbine foundations in tidal sands in the Netherlands Author(s) Lankreijer, T.; Dijck, F. van; Bakker, J. Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Lankreijer, T., Dijck, F. van, & Bakker, J. (2022, September 20). RLT on prefab concrete piles of wind […]
BAM Screw Piles 2.0: Validating Design for ‘De Drie Hoefijzers’ by Rapid Load testing
Titel BAM Screw Piles 2.0: Validating Design for ‘De Drie Hoefijzers’ by Rapid Load Testing Author(s) Geest, A. van der; Helden, A. van; Bakker, J Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Geest, A. van der, Helden, A. van, & Bakker, J. (2022, September 20). BAM Screw Piles […]
Rapid Load Testing on piles instrumented with glass fiber optics in Rotterdam
Titel Rapid Load Testing on piles instrumented with glass fibre optics in Rotterdam Author(s) Dorp, R. van; Buitenhuis, R.; Kortmann, H. Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Dorp, R. van, Buitenhuis, R., & Kortmann, H. (2022, September 20). Rapid Load Testing on piles instrumented with glass fibre optics […]
Post Driveability Study for Caesar’s Rhine Bridge 55 B.C.
Titel Post Driveability Study for Caesar’s Rhine Bridge 55 B.C. Author(s) Middendorp, P; Verbeek, G; Bielefeld, M Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Middendorp, P, Verbeek, G, & Bielefeld, M. (2022, September 20). Post Driveability Study for Caesar’s Rhine Bridge 55 B.C. 11th International Conference on Stress Wave […]
Alternative facts in Pile Testing
Titel Alternative facts in pile testing Author(s) Verbeek, Bielefeld Year 2022 Language English Where 11th Int Stress Wave Conference, Rotterdam, The Netherlands Cite as Verbeek, G.E.H., & Bielefeld, M.W. (2022, September 20). Alternative facts in pile testing. 11th International Conference on Stress Wave Theory and Design and Testing Methods for Deep Foundations (SW2022), Rotterdam, The […]
Rapid Load Testing in Germany
Titel Rapid Load Testing in Germany Author(s) Bakker, J.; van Dorp, R.; Bielefeld, M.W. Year 2022 Language English Where International Conference on Deep Foundations and Ground Improvement Smart Construction for the Future Cite as ABSTRACT: Pile load testing can be performed by a static, rapid or high strain dynamic (generally designated as dynamic) testing method. […]
Re-use of old foundations in Amsterdam
Titel Re-use of old foundations in Amsterdam Author(s) Offenberg, R. ; van Delft, M.; Bielefeld, M.W. Year 2022 Language English Where International Conference on Deep Foundations and Ground Improvement Smart Construction for the Future Berlin 2022 Cite as ABSTRACT: The question of the continued suitability of existing foundations arises when the function of the superstructure […]
Rapid Load Testing Prediction Models
Titel Rapid Load Testing Prediction Models Author(s) Middendorp, P.; Bielefeld, M.W. and Bakker, J. Year 2018 Language English Where 10th Int Stress Wave Conference, San Diego, USA Cite as Middendorp, P., Bielefeld, M. W., and Bakker, J., “Rapid Load Testing Prediction Models,” Stress Wave Theory and Testing Methods for Deep Foundations: 10th International Conference, ASTM […]
Axial Pile Capacity: Correlation Between Impact Driven Piles and Vibro Driven Piles
Titel Axial Pile Capacity: Correlation Between Impact Driven Piles and Vibro Driven Piles Author(s) Verbeek, G.; van Dorp, R.; Moscoso, N.; Bielefeld, M.W. Year 2022 Language English Where Offshore Technology Conference held, Houston, TX, USA, 2 – 5 May, 2022 Cite as Verbeek, G.; van Dorp, R.; Moscoso, N.; Bielefeld, M.W.. “Axial Pile Capacity: […]
Factors that affect Pile Driving with a Vibro Hammer
Titel Factors that affect Pile Driving with a Vibro Hammer Author(s) Verbeek, G.; van Dorp, R.; Moscoso, N.; Bielefeld, M.W. Year 2022 Language English Where Offshore Technology Conference held, Houston, TX, USA, 2 – 5 May, 2022 Cite as Verbeek, G.; van Dorp, R.; Moscoso, N.; Bielefeld, M.W.. “Factors that affect Pile Driving with […]
Analyzing the Dynamic Pile Load Test Measurements with an Aid of Stress Wave Theory
Titel Analyzing the Dynamic Pile Load Test Measurements with an Aid of Stress Wave Theory Author(s) Bielefeld, M.W.; Singh, K.P.; van Dorp, R. Year 2021 Language English Where DFI-India 2021: 10th Anniversary Conference on Deep Foundation Technologies for Infrastructure Development in India Cite as ABSTRACT: Until the mid 1980s the only alternative to Static Load […]
Rapid Load Testing: The Quick Maintained Quasi-Static Load Test
Titel Rapid Load Testing: The Quick Maintained Quasi-Static Load Test Author(s) Bielefeld, M.W.; Singh, K.P.; van Dorp, R. Year 2021 Language English Where DFI-India 2021: 10th Anniversary Conference on Deep Foundation Technologies for Infrastructure Development in India Cite as ABSTRACT: Until the mid 1980s the only alternative to Static Load Testing (SLT) of Deep Foundation […]
Decommissioning Offshore Structures by Extraction of Foundation Monopiles Applying a Vibratory Hammer
Titel Decommissioning Offshore Structures by Extraction of Foundation Monopiles Applying a Vibratory Hammer Author(s) van Dorp, R.; Middendorp, P. ; Bielefeld, M.W. ;Verbeek, G. Year 2021 Language English Where Offshore Technology Conference, Houston, TX, USA, 16-19 August, 2021 Cite as van Dorp, R.; Middendorp, P.; Bielefeld, M.W., Verbeek, G., “Decommissioning Offshore Structures by Extraction of […]
Soil Modeling for Pile Driving Simulations Using a Vibro Hammer
Titel Soil Modeling for Pile Driving Simulations Using a Vibro Hammer Author(s) Bielefeld, M.W.; Moscoso, N.; Verbeek, G. Year 2020 Language English Where Offshore Technology Conference held, Houston, TX, USA, 4 – 7 May, 2020 Cite as Bielefeld, M.W. ; Moscoso, N.; Verbeek, G.R., “Soil Modeling for Pile Driving Simulations Using a Vibro Hammer”, […]
StatRapid used on instrumented piles for optimization of design parameters for high rise building in The Hague
Author(s): van Dorp, van Delft, IJnsen Year: 2019 Language: English Where: Proc., Pfahl-Symposium 2019, Braunsweigh 107 ABSTRACT: For a new high rise development in the center of The Hague (NL) heavily loaded piles have to be installed through the existing basement floor of an underground car park. The project and its environmental boundaries required for […]
Determination of Discontinuities in Piles by Integrity and Signal Matching Techniques
Author(s): Middendorp, P., Reiding, F.J. Year: 1988 Language: English Where: 3rd International Conference on The Application of Stress Wave Theory on Piles, Ottawa, Canada INTRODUCTION: The quality of the signals, obtained by sonic integrity testing of piles has been improved considerably with the introduction of digital signal processing. This allows the introduction of a new […]
Pile Integrity Testing in the Netherlands
Author(s): Middendorp, P., Schellingerhout, J. Year: 2006 Language: English Where: 10th International Conference on Piling and Deep Foundations, DFI , Amsterdam INTRODUCTION: Pile foundations are widely applied in the Netherlands because of the soft soil conditions. One of the popular pile types are cast-in-situ piles, which have to be integrity tested to get accepted. Integrity […]
Prediction and Monitoring of Installation of Offshore Foundation Monopiles for Windfarms
Author(s): Van Dorp, Moscoso, Bielefeld, Verbeek Year: 2019 Language: English Where: Offshore Technology Conference in Houston, Texas, USA INTRODUCTION: Upon recently, most offshore foundations were based on a number of driven piles that were installed with an impact hammer. With the increase in offshore windfarms two major developments have occurred: the shift from jackets to […]
The influence of stress wave phenomena during Statnamic Load Testing
Author(s): Middendorp, Bielefeld Year: 1995 Language: English Where: First International Statnamic Seminar, Vancouver INTRODUCTION: The Unloading Point Method (UPM) has become a standard tool for the analysis of Statnamic (STN) load testing signals. The method is based on the assumption that the pile can be modeled as a concentrated mass and springs. Modeling is only […]
Pile Foundation design philosophy and testing program for a new generation diesel fuel plant
Author(s): Romano, M.C., Middendorp, P, Doornbos, S. Year: 2010 Language: English Where: DFI Conference, Geotechnical Challenges in Urban Regeneration, London, UK INTRODUCTION: The company NESTE-OIL is building a plant for the production of a new generation NExBTL diesel fuel in the Port of Rotterdam The Netherlands. The fuel is produced from renewable vegetable oil as […]
Keynote lecture: Statnamic the engineering of art.
Author(s): Middendorp. P. Year: 2000 Language: English Where: International Conference on Application of Stress Wave Theory to Piles, Sao Paulo, Brazil CONCLUSIONS: The success of Statnamic stems for a significant part from the concepts and ideas generated by “artist-engineers” and “engineer-artists”. According to Brandl (2000): an excellent engineer requires not only a firm theoretical knowledge […]
Rapid load field tests interpreted with the new Guideline
Author(s): Hölscher, Brassinga, van Tol, Middendorp, Revoort Year: 2009 Language: English Where: 17th International Conference on Soil Mechanics & Geotechnical Engineering, Alexandria, Egypt CONCLUSIONS: Two instrumented driven piles are tested by both SLT and RLT. The measurements lead to the following conclusions: SLTs show a bearing capacity of 1120 kN respectively 1150 kN. The RLT’s […]
Rapid Load Testing: an updated technique towards pile testing efficiency
Rapid Load Testing: una eficiente técnica para pruebas de carga en pilotes Author’s: Moscoso N.; Bielefeld M.W.; Fernández Tadeo C. Year: 2018 Language: Spanish Where: 16 CNG – 6JLEG 2018, Azores, Portugal INTRODUCTION: The article describes the rapid load test history from its invention 40 years ago until nowadays. As the method was being developed […]
Prediction and Monitoring of Installation of Offshore Foundation Monopiles for Windfarms
Titel Prediction and Monitoring of Installation of Offshore Foundation Monopiles for Windfarms Author(s) van Dorp, R.; Moscoso, N.; Bielefeld, M.W.;Verbeek, G.; Year 2019 Language English Where Offshore Technology Conference held, Houston, TX, USA, 6 – 9 May, 2019 Cite as van Dorp, R.; Moscoso, N.; Bielefeld, M.W.;Verbeek, G.; “Prediction and Monitoring of Installation of […]
International Prediction Event Behaviour of Cfa, Driven and Bored Piles in Residual Soil Experimental Site
Author(s): Viana da Fonseca, Santos, A. Year: 2008 Language: English Where: ISC’2,September 2008 / 240×170 / 688 pages ISBN: 978-972-752-104-3 ISBN: 978-98995625-1. INTRODUCTION: In the north-western region of Portugal, residual soils from granite are dominant. The thickness of these regional saprolitic soils may some times exhibit more than 20m, with more common values of 5 […]
The advantages and disadvantages of Dynamic Load testing and Statnamic Load Testing
Author(s): Middendorp, Ginneken, Foeken Year: 2000 Language: English Where: Sixth International Conference on the Application of Stress Wave Theory to Piles, Sao Paulo ABSTRACT: Pile capacity testing by high strain dynamic loading methods is widely applied because of its economy and efficiency compared to static load testing methods (SLT). Frequently applied dynamic loading methods are […]
Soil investigation and negative skin friction
Grondonderzoek en negatieve kleef Author(s): A.P. Offenberg Year: 1996 Language: Dutch Where: Symposium Geo- en Funderingstechniek INTRODUCTION: Negative skin friction now a well-known and established concept in soil mechanics, about which no news can be reported. The “new” geotechnical standards do not give rise to shocking changes. This contribution, therefore, has nothing new to offer […]
What happens in the soil during pile driving?
Wat gebeurt er in de grond tijdens het heien? Auteur(s): ir. G. DE JOSSELIN DE JONG Year: 1956 Language: Dutch Where: De ingenieur 68e jaargang no. 25 SUMMARY: A) A graphical method is used to determine stress and velocity in rods under dynamic loading conditions. Application to a sample of dry sand gives regions of […]
Thirty years of experience with the wave equation solution based on the method of characteristics
Author(s): Middendorp. P. Year: 2004 Language: English Where: Seventh International Conference on the Application of Stress Wave Theory to Piles, Kuala Lumpur INTRODUCTION: The method of characteristics, as an accurate solution of the wave equation, has a long history of the application. This paper will describe a brief history of the method and the author’s […]
StatRapid Load Tests in the 270th edition of inGEOpres
Auteur(s): Moscoso del Prado Mazza; Fernández Tadeo; Bielefeld Year: 2018 Language: Español Where: inGEOpres – oct 2018 nr 270 INTRODUCTION: Pile loading tests are carried out to verify that the piles have the capacity required to support the structure to be built. Applying a load on a pile instrumented with sensors, these tests are able […]
Re-evaluation of the method to determine pile damage using the Beta Method
Auteur(s): G. Verbeek; G. Goble Year: 2012 Language: English Where: Proceedings of the IS-Kanazawa, Japan INTRODUCTION: In 1979, a paper was published by Rausche and Goble describing a method to determine damage in driven piles using the Beta Method. Over the years this method has become the standard for pile damage assessment in many parts […]
Pile foundation testing of a hurricane resistant jetty
Auteur(s): Middendorp, P., Plooy, P.J., Kruit,D.B Year: 2008 Language: English Where: 8th Int. Conf. Application of stress-wave theory to piles, Lisbon INTRODUCTION: To prevent pile driving problems during the construction of a jetty at Grenada a proof testing approach was applied whereby test pile driving was performed at several places where the jetty was to […]
At the cutting edge of pile driving and pile testing
Autor(s): Middendorp, P., Verbeek, G. Year: 2012 Language: English Where: 9th International Conference on Testing and Design Methods for Deep Foundations; Kanasawa, Japan INTRODUCTION: The worldwide challenges to achieve a greener planet, better communications, cost-effective and fast means of transportation, and the protection against natural hazards (such as earthquakes, floods, tsunamis and hurricanes) continually force […]
Modeling and Observations of Pile Installation using Vibro Hammers in Fraser River Delta soils
Autor(s): David Tara, Peter Middendorp, Gerald Verbeek Year: 2014 Language: English Where: Modeling and Observations of Pile Installation using Vibro Hammers in Fraser River Delta soils INTRODUCTION: There has been significant recent interest in the use of vibratory drivers/vibro hammers to install piles in offshore and nearshore applications around the globe. Recent experience using vibratory […]
Pile Driving Analysis & Vibro Hammers A Viable Combination
Autor(s): Verbeek G.;Middendorp P.; van Dorp R.; Tara D. Year: 2013 Language: English Where: Presentation SuperPile 2013, Minneapolis, MN INTRODUCTION: Presentation held at the SuperPile 2013 conference in Minneapolis, MN. DOWNLOAD: You can download the entire article here, after entering your name and e-mail address. .
Installation of Monopiles by Vibrohammers for the Riffgat Project
Autor(s): L. de Neef, P. Middendorp, J. Bakker Year: 2013 Language: English Where: Pfahlsymposium, Braunschweig INTRODUCTION: The successful installation of 22m diameter steel tubular piles/caissons by vibratory hammers in China in 2011 resulted in a strong interest in the application of vibratory hammers to install steel tubular monopiles for wind turbines, especially offshore. The first […]
Skin friction models for sand from static and dynamic laboratory load tests
Auteur(s): Middendorp,P., van Brederode, P.J. Year: 1984 Language: English Where: 2nd International Conference on Stress Waves, The Hague, Netherlands Proceedings INTRODUCTION: The behavior of a foundation pile during impact loading can be measured or it may be simulated by computerized calculation. Although today measuring techniques and computer algorithms have reached high levels of accuracy, the […]
A digital approach to sonic pile testing
Auteur(s): Reiding, F.J., Middendorp, P., P.J. van Brederode Year: 1984 Language: English Where: 2nd International Conference on Stress Waves, The Hague, Netherlands Proceedings INTRODUCTION: Paper regarding digitizing of SIT measurements. DOWNLOAD: You can download the entire article here, after entering your name and e-mail address .
Hydroblok and Improved Pile Driving Analysis
Auteur(s): Voitus van Hamme, G.E.J.S.L. Jansz, J.W. Bomer H.,and Arentsen, D. Year: 1974 Language: English Where: De Ingenieur Vol. 86, no. 8 INTRODUCTION: In a previous article, a description of a number of features of the Hydroblock has been given, in particular, the properties of the Hydroblock have been compared with those of other types […]
Rapid Pile Load Testing in Barcelona
Pruebas de carga rápida de pilotes en Barcelona Auteur(s): Moscoso del Prado Mazza; Fernández Tadeo; Bielefeld; Year: 2018 Language: Español Where: Obras Urbanas sept – oct 2018 nr 71 INTRODUCTION: The first Rapid Load Tests in Spain were conducted in 2017 in the port of Barcelona. This modern method, standardized worldwide, is a step forward […]
Recent advances of rapid load testing in Asia and Europe
Autor(s): Chew, S.H.; Middendorp, P.; Bakker J.; Chua G. Year: 2015 Language: English Where: Proceedings XVI European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh, Scotland INTRODUCTION: Rapid Load Testing (RLT), by which a quasi-static load is applied to a foundation pile, is used increasingly as an alternative to static load testing (SLT) and high […]
On the operation of a diesel hammer
Autor(s): Voitus van Hamme Year: 1981 Language: Dutch Where: Technical University Delft, The Netherlands INTRODUCTION: This Dutch thesis with an English summary describes the operation of the diesel hammer and the theory of pile driving. Field measurements are also shown and analyzed. The process of the diesel block is divided into 8 phases: 1. fall […]
From very small to gigantic piles
Autor(s): Middendorp P.; van Dorp R.F. Year: 2012 Language: Dutch Where: Geotechniek Funderingsdag 2012 special INTRODUCTION: The theme Foundations in Motion has been the practice for Allnamics in the short period of its existence since 2010, both literally and figuratively, for several national and international projects in the field of Mini- to Giga-piles. It is […]
Renovation of pile foundations for homes in Zaanstad
Om en om renovatie van paalwoningen voor woningen in Zaanstad Autor(s): Ad Offenberg Year: 1981 Language: Dutch Where: Polytechnisch tijdschrift, editie bouwkunde, wegen en waterbouw INTRODUCTION: In this (dutch) article a description is given of the way how a wooden pile foundation was completed with concrete piles at a renovation in Zaandam the Netherlands. Because […]
Frequency-Penetration Response Spectrum on Vibratory Amplitude Matching of Monopiles
Titel Frequency-Penetration Response Spectrum on Vibratory Amplitude Matching of Monopiles Author(s) N. Moscoso del Prado Mazza & A.E. Holeyman Year 2018 Language English Where 10th Int Stress Wave Conference, San Diego, USA Cite as Mazza, N. M. D. P. and Holeyman, A. E., “Frequency-Penetration Response Spectrum on Vibratory Amplitude Matching of Monopiles,” Stress Wave Theory […]
