Searched for: subject%3A%22Centrifuge%255C%2Bmodelling%22
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Veldhuijzen van Zanten, Daan (author)
In this thesis the performance of five CPT-based p-y models by Novello (1999), Dyson & Randolph (2001), Li, et al. (2014) and Suryasentana & Lehane (2014;2016) is assessed. This is done in part by comparing the measured load-deflection response from a set of lab- and field tests that is representative for offshore monopile structures to...
master thesis 2022
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Askarinejad, A. (author), Wang, H. (author), Chortis, Giorgos (author), Gavin, Kenneth (author)
The scour protection layers are usually installed around the monopiles to prevent the formation of scour hole. While extensive studies have been performed on the effectiveness of scour protection layer as mitigation measure, no study to date has been found to quantify the influence of scour protection layer on the lateral response of...
journal article 2022
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Li, Q. (author), Gavin, Kenneth (author), Askarinejad, A. (author), Prendergast, L. J. (author)
The influence of combined loading on the response of monopiles used to support offshore wind turbines (OWTs) is investigated in this paper. In current practice, resistance of monopiles to vertical and lateral loading is considered separately. As OWT size has increased, the slenderness ratio (pile length, L, normalised by diameter, D) has...
journal article 2022
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Li, Q. (author), Askarinejad, A. (author), Gavin, Kenneth (author)
The majority of offshore wind structures are supported on large-diameter, rigid monopile foundations. These piles may be subjected to scour due to the waves and currents that causes a loss of soil support and consequently decreases the pile capacity and system stiffness. The results of numerical models suggest that the shape of the scour hole...
journal article 2021
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Zhang, W. (author)
The assessment of the potentially destructive impacts of subaqueous landslides on offshore pipelines is required when the pipeline route passes through zones with a risk of mass movements. Therefore, quantifying and evaluating the ultimate load/pressure acting on the pipeline is one of the key factors in geotechnical safety design of the...
doctoral thesis 2020
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Li, Q. (author)
Although wind energy capacity has increased significantly in the last few decades, the installed capacity of offshore wind turbine still lags far behind that of onshore wind turbines due to the installation and foundation cost. The aim of this research project has been to clarify the influence of combined vertical and lateral loads, lateral...
doctoral thesis 2020
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Chortis, G. (author), Askarinejad, A. (author), Prendergast, L.J. (author), Li, Q. (author), Gavin, Kenneth (author)
The influence of scour on the lateral response of monopile foundations for offshore wind turbines is investigated in this paper. Application of lateral load-displacement (p-y) curves to predict the lateral pile behaviour is subject to uncertainty as many of the presently used design approaches have been derived for long, slender piles. These...
journal article 2020
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Lucas, Daisy (author), Herzog, Ralf (author), Iten, Markus (author), Buschor, Heinz (author), Kieper, Andreas (author), Askarinejad, A. (author), Springman, Sarah M. (author)
Predicting the trigger of a slope failure of a steep Alpine scree slope in south-west Switzerland is challenging. The groundwater (GW) flow from snow-melting and rainfall infiltration during summer changes the susceptibility to surficial failure, which also depends on the slope angle, bedrock geometry, stratigraphy and the shear strength of the...
journal article 2020
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Honardar, Siavash (author)
The aim of this project is to elaborate upon the design proposal of a miniature cone penetration test device. The usage of CPTs in the geotechnical centrifuges has proven to be a reliable experimental method. The usage of a CPT in a centrifuge can provide determinant results for many applications of geotechnical experimentation. The usage of...
student report 2019
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Wang, Frank (author)
Marine pipelines are widely used for transporting hydrocarbon material. However, they can be damaged by marine geo-hazards such as seabed liquefaction, as they may sink, float or be dragged by the moving soil. One of the triggering mechanism of seabed liquefaction is the increase of seabed inclination as a result of the souring process or human...
student report 2019
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Quinten, Tristan (author)
As a result of population growth and economical prosperity, energy consumption has been on the rise for decades. Present-day projections predict the continuation of this trend with the rapid industrialization of former second world countries. Together with the rise of energy demand, incentives fo the scientific community to quantify the...
master thesis 2019
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Quinten, Tristan (author)
Investigating soil response before, during and following large scale, dynamic events like slope failure or impact hammering of monopiles, is challenging. Full scale research into these processes is often conducted in the field, as laboratories don’t offer the required space to conduct these experiments. Apart fromthe monumental costs related to...
student report 2019
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Zhang, W. (author), Askarinejad, A. (author)
Sand erosion and scouring caused by waves and marine currents result in gradual increase of local seabed inclination and formation of slopes around hydraulic structures and offshore foundations. During this process, shear stresses in the soil body increase monotonically which may lead to static liquefaction and damage of the adjacent offshore...
journal article 2019
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Gerlach, Simon (author)
As soil behaviour is stress-dependent, a centrifuge model with tilting sample box was developed to generate liquefaction flow slides at higher confining stresses. The design and experimental set-up were based on the large liquefaction tank (de Jager et al., 2017). Fluidisation was used as sample preparation technique to produce a saturated,...
master thesis 2018
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Azua Gonzalez, Carlos (author)
Many farms of wind turbines are being installed worldwide as a response to clean energy targets. These farms are usually installed in offshore environments since limitations of space can be encountered or due to public pressure against the visual disruption that farms can cause in urban areas. These offshore wind turbines are commonly founded on...
master thesis 2017
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Takahashi, A. (author), Horikoshi, K. (author), Maruyama, T. (author)
conference paper 2017
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Hopman, P.T. (author)
To improve the design of soil retaining walls in narrow trenches, a design optimization tool is introduced by Hosseinzadeh and Joosse (2015). This design optimisation tool is an intensification factor on the passive earth pressure coefficient Kp, that includes the effect of overlapping passive zones. The authors argue that the passive earth...
master thesis 2016
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Shuku, T. (author), Nishimura, S-I. (author), Yoshida, I. (author)
Strong nonlinear behavior such as slope failure involves large uncertainties. Even if we conduct model tests on slope failure under the same test conditions, we cannot reproduce the same results although the linear behavior can be reproduced with relative ease. This kind of uncertainties is well known as “aleatory uncertainty” and they should be...
conference paper 2015
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De Lange, D.A. (author)
An increase over time in bearing capacity of displacement piles is often found in the field. This phenomenon is called pile set-up. The increase is predominantly caused by an increase in shaft resistance and is observed even until 1000 days after installation. In the Dutch situation, a proposed tightening of the design standard for pile...
master thesis 2013
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Dijkstra, J. (author), Gaudin, C. (author), White, D.J. (author)
To investigate the differences in failure mechanisms beneath vertically loaded shallow foundations on silica and carbonate sands by way of particle image velocimetry analysis, 1g and centrifuge model tests have been performed. A comparison of silica and carbonate sand behaviour at low stresses and low initial soil density was made possible by 1g...
journal article 2013
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