Avi Shonberg

Avi Shonberg
Orsted · Geotechnical Department

About

13
Publications
10,212
Reads
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52
Citations
Citations since 2016
13 Research Items
52 Citations
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2016201720182019202020212022051015

Publications

Publications (13)
Article
Full-text available
Failure envelope formulations are typically employed to assess the ultimate capacity of foundations under combined loading and for incorporation in macro-element models. However, the complex interaction between each load component, especially for six degree of freedom (6DoF) loading, means that determining satisfactory formulations is often a compl...
Article
Full-text available
Suction caisson foundations provide options for new foundation systems for offshore structures, particularly for wind turbine applications. During the foundation design process, it is necessary to make reliable predictions of the stiffness of the foundation, since this has an important influence on the dynamic performance of the overall support str...
Conference Paper
There have been a number of incidents worldwide where pile tip damage has occurred during pile driving, generally requiring costly remedial actions. The number of such occurrences has increased recently, consistent with the trend of increasing diameter tubular piles, which are increasingly thin-walled relative to the diameter, used to support offsh...
Conference Paper
The cone penetrometer test (CPT) is used extensively for the assessment of ground conditions for offshore wind farms due to its relative speed, accuracy and continuous profiling capability. For a recent offshore wind farm project in the North Sea, the CPT equipment and CPT procedure were innovatively modified to assess the residual strength and cyc...
Article
Full-text available
The failure envelope approach is widely used to assess the ultimate capacity of shallow foundations for combined loading, and to develop foundation macro-element models. Failure envelopes are typically determined by fitting appropriate functions to a set of discrete failure load data, determined either experimentally or numerically. However, curren...
Article
Full-text available
The failure envelope approach is commonly used to assess the capacity of shallow foundations under combined loading, but there is limited published work that compares the performance of various numerical procedures for determining failure envelopes. This paper addresses this issue by carrying out a detailed numerical study to evaluate the accuracy,...
Chapter
The suction bucket jacket (SBJ) foundation has recently been deployed as a foundation solution in the offshore wind sector. Offshore wind farms are generally located in relatively shallow waters in relatively stiff soils, thus there can be a significant risk of early refusal when installing the SBJ. The current design guidelines and standards lack...
Conference Paper
Full-text available
Most existing Winkler models use non-linear elastic soil reactions to capture the non-linear be-haviour of foundations. These models cannot easily capture phenomena such as permanent displacement, hys-teresis and the influence of combined loading on the failure states. To resolve these shortcomings, an elasto-plastic Winkler model for suction caiss...
Conference Paper
A significant number of large diameter monopiles (>6 m diameter) have been installed as foundations for offshore wind turbine generators (WTG) across Northern European waters over the past decade, where the self-weight penetration (SWP) during the installation process was recorded. The prediction of the SWP for offshore foundations, such as piles a...

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